I MI~A~J~L M)P~SAL OF CORONADO I NATIONAL FOREST, PART 9
I Galiuro Mountains Unit I Graham County, Arizona
I Galiuro Muni~Untains I i A IZON I,' '
I BUREAU OF MINES UNITED STATES DEPARTMENT OF THE INTERIOR f
United States Department of the Interior BUREAU OF MINES INTERMOUNTAIN FIELD OPERATIONS CENTER "m II P.O. BOX 25086 II BUILDING 20, DENVER FEDERAL CENTER DENVER, COLORADO 80225
November 22, 1993
Nyal Niemuth Arizona Department of Mines and Mineral Resources 1502 West Washington Phoenix, AZ 85007
Dear Mr. Niemuth:
Enclosed are two copies of the following U.S. Bureau of Mines Open File Report for your use:
MLA 21-93 Mineral Appraisal of the Coronado National Forest, Part 9, Galiuro Mountains Unit, Graham County, Arizona
If you would like additional copies, please notify Mark Chatman at 303-236-3400.
Resource Evaluation Branch I i I MINERAL APPRAISAL OF THE CORONADO NATIONAL FOREST PART 9, GALIURO MOUNTAINS UNIT, I GRAHAM COUNTY, ARIZONA I I by.
I S. Don Brown I MLA 21-93 I 1993 I I,
i Intermountain Field Operations Center I Denver, Colorado I
UNITED STATES DEPARTMENT OF THE INTERIOR I BRUCE BABBITT, Secretary
BUREAU OF MINES I HERMANN ENZER, Acting Director I I I PREFACE I A January 1987 Interagency Agreement between the U.S. Bureau of Mines, U.S. Geological Survey, and U.S. Forest Service describes the purpose, authority, and
I program operation for the forest-wide studies. The program is intended to assist the I Forest Service in incorporating mineral resource data in forest plans as specified by the National Forest Management Act (1976) and Title 36, Chapter 2, Part 219, Code of i Federal Regulations, and to augment the Bureau's mineral resource data base so that it can analyze and make available minerals information as required by the National
I Materials and Minerals Policy, Research and Development Act (1980). I I
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I ..... I
This open-file report summarizes the results of a Bureau of Mines forest-wide study. The report is preliminary and has not been edited or reviewed for conformity with the Bureau of Mines editorial standards. This study was conducted by personnel from the Intermountain Field Operations Center, Building 20, Denver Federal Center, Denver, CO 80225. !
II CONTENTS | SUMMARY ...... 1
I INTRODUCTION ...... 2 Geographic setting ...... 2 Previous investigations ...... 2 I Methods of investigation ...... 4 Geologic setting ...... 5 | Mining history ...... 6 MINERAL APPRAISAL ...... 7 Northern Galiuro Mountains ...... 7 Rattlesnake mining district ...... 7 Upper Rattlesnake Creek ...... 8 Powers Mine ...... 8 Long Tom Mine ...... 8 I Sixteen-to-One Mine ...... 9 Southern Galiuro Mountains ...... 9
i CONCLUSIONS ...... 10 t REFERENCES ...... 11 Appendix A--Data for samples from the Galiuro Mountains Unit, Coronado National Forest, Cochise County, Arizona ...... 12
B--Inductively coupled plasma-atomic emission spectroscopy multi-element analytical data for samples analyzed by I Chemex Labs, Inc ...... 15 C--Neutron activation multi-element analytical data for I samples analyzed by Bondar-Clegg & Company Ltd ...... 17 D--Data for individual mines and prospects in the Galiuro Mountains Unit, Coronado National Forest, I Cochise County, Arizona ...... 19
E--Mine location and mine map figures for the Galiuro i Mountains Unit, Coronado National Forest, Cochise County, Arizona ...... 31 I I ! 1 ILLUSTRATIONS i Plate 1. Sample locality map of the Galiuro Mountains Unit, at i Coronado National Forest, Cochise County, Arizona ...... back Figure 1. Index map of the Galiuro Mountains Unit, Coronado I National Forest, Graham County, Arizona ...... 3 Figures 2-1 1, maps of: i 2. Prospects at the north end of the Galiuro Mountains showing sample localities GA 2-7 ...... 32
3. Mines and prospects near Rattlesnake Creek showing I sample localities GA 8-23 ...... 33
4. Adit adjacent to Rattlesnake Creek showing sample I localities GA 8-10 ...... 34
5. Adit adjacent to Rattlesnake Creek showing sample I localities GA 11-21 ...... 35 i 6. Powers Mine ...... 36 7. Long Tom Mine ...... 37
I 8. Sixteen-to-One Mine ...... 38 I 9. Sixteen-to-One Mine, northern adits ...... 39 10. Sixteen-to-One Mine, southern adits ...... 40 I 11. Mines and prospects in the southern part of the Galiuro Mountains ...... 41 I
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°oo I III II UNIT OF MEASURE ABBREVIATIONS USED IN THIS REPORT
I $ dollar (U.S.) I ft foot Ib pound l mi 2 square miles i mi mile % percent I oz troy ounce ppb part per billion
I ppm part per million I st short ton (2,000 Ib)
I i I I ii !
iv i MINERAL APPRAISAL OF THE CORONADO NATIONAL FOREST PART 9, GALIURO MOUNTAINS UNIT, GRAHAM COUNTY, ARIZONA
by
S. Don Brown, U.S. Bureau of Mines
SUMMARY
Between 1990 and 1992, the Bureau of Mines reviewed the mining history and studied the mineral resources of the Galiuro Mountains unit of the Coronado National
Forest to appraise the mineral resources and to identify and describe areas with past mining activity. The study included a comprehensive literature search combined with a field investigation of mines, prospects, and mineralized areas where literature was incomplete or lacking. This study is part of the Bureau's overall mineral evaluation of the Coronado National Forest and will be included in a summary report of the Forest.
Inside the Forest the Galiuro Mountains are underlain by young, relatively unmineralized volcanic rocks, making an assessment of mineral resources at depth in older, potentially mineralized formations difficult. No mineral resources were identified in the Forest during this study or during previous studies by others. The only known current mining activity is at a fire agate mine in the northeast part of the Forest. The
Copper Creek mining district, adjacent to the northwest part of the Forest, had a substantial amount of base and precious metal production from older rocks not exposed in the Forest. The Rattlesnake mining district, near the central part of the study area, produced a small amount of gold, silver, and copper between the years
1908-1940. ! INTRODUCTION ! During 1990-1992, the Bureau of Mines studied the mineral resources of the Galiuro Mountains on land administered by the U.S. Forest Service. This study is part i of the Bureau's overall mineral evaluation of the Coronado National Forest. I Geographic setting The Galiuro Mountains include 138,246 acres (216 mi 2) of the Coronado
! National Forest, in Graham County, southeastern Arizona (fig. 1). The majority of the I Forest is inside the Galiuro Wilderness which encompasses 76,317 acres or about 55% of the Forest Unit (plate 1 ). The nearest major communities to the range include
! Pima, Thatcher, and Safford to the northeast, Willcox to the southeast, Benson to the
south, and Mammoth and San Manuel to the west. Sulphur Springs Valley is on the
i southeast side of the range, Aravaipa Canyon is on the north and northeast side, and ! the San Pedro Valley parallels the west side. Elevations inside the Forest range from 3,480 ft on the west side to 7,663 ft at Bassett Peak in the southern end. l An unnamed all-weather road is north and northeast of the Forest, the Aravaipa l road is northeast and east of the Forest, State Highways 76 and 77 are west of the Forest, and an unnamed all-weather road parallels the Forest on the west side. From I these highways and roads, numerous Forest trails and dirt roads provide access to the ,| Forest. Previous investigations II The most comprehensive report that discusses the geology and minerals of the I Galiuro Forest Unit is a mineral survey of the former Galiuro Wilderness ( about 53,000 acres) and contiguous roadless areas, conducted by the U.S. Bureau of Mines and U. ! S. Geological Survey in the 1970's (Creasey and others, 1981 ). This is the source for
2 ii I
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i T.L6S.
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I I t 10I 15I 20t 25; I 0 5 ,I., I -N- I Map Location I Figure i.--Index map o~ the Gahuro Mountains Unit, Coronado National Forest, Oraham County, Arizona.
3 much of the information in this report. Creasey and others (1961) made a reconnaissance geologic map of parts of the San Pedro and Aravaipa Valleys that include the Galiuro Mountains. Simons (1964) gives a detailed description of the geology and ore deposits of the Klondyke 15 minute Quadrangle, which includes the northern part of the Forest and the Copper Creek mining district on the northwest side of the Forest. A number of older geologic and mineral investigations, both for specific sites and general areas, cover the Galiuro Mountains and nearby areas, and many of these are referenced in the reports by Creasey and others (1981 ) and Simons (1964).
Methods of investigation
A detailed literature search for pertinent geologic and mining information for the
Forest was made prior to the field investigation. Bureau of Land Management and county records were examined for location of patented and unpatented mining claims.
The Bureau's field study concentrated on the examination of known mines, prospects, and mineralized areas inside the Forest boundary. A total of 10 field-days was spent in the field during the winter, spring, and fall of 1991. Mine and prospect workings that had little or no literature information were mapped and sampled. Veins, potentially mineralized structures, and altered and/or mineralized outcrops were sampled.
Twenty-three samples were taken; they consisted of two types: 1) chip -- a regular series of rock chips taken in a continuous line across a mineralized zone ore rock face; 2) grab -- rock collected randomley from a dump, stockpile, other rock at a mine working, or float. All samples were analyzed by Chemex Labs, Inc. of
Vancouver, British Columbia for 32 elements by an inductively coupled plasma (ICP) method. Also, all samples were analyzed by Bondar-Clegg, Inc. of Vancouver, British
4 II Columbia for gold plus 33 elements by a neutron activation method. Sample ! descriptions are summarized in appendix A, and all analytical results are in appendixes B and C.
iI Geologic setting ! The Galiuro Mountains are a north- to northwest-trending mountain range in the Mexican Highland section of the Basin and Range Physiographic province. The range
! is an easterly-dipping tilted fault block bounded on the west by a west-dipping high- ! angle normal fault. A parallel west-dipping normal fault extends about three-quarters of the way through the Forest from the south boundary. The range is underlain mostly
! by gently eastward-dipping Miocene Galiuro volcanics, a thick sequence of andesitic ! to rhyolitic volcanic rocks. These volcanic rocks overlie Precambrian schists, granites, and quartzites, Paleozoic quartzites, and upper Cretaceous and lower Tertiary volcanics ! and granitic stocks. Of primary importance for mineral potential in the Forest is the possibility of a mineral-bearing granodioritic intrusion under younger volcanic rocks.
! Mineralized granodiorite is exposed in the Copper Creek mining district adjacent to the ! northwest part of the Forest, and likely extends eastward under the layer of younger Galiuro volcanics covering the Forest. !
5 I Mining History I Two mining districts lie in and adjacent to the Forest. The Rattlesnake district is near the central part of the Forest and the Copper Creek (Bunker Hill) district is
I adjacent to the northwest part of the Forest, centered around Copper Creek. No mines I in the Copper Creek district are inside the Forest. The Rattlesnake district includes the Gold Mountain, Powers, and Long Tom Mines. The Sixteen-To-One Mine is a small, I isolated mine at the southwest edge of the Forest, and in the southern part of the I Forest are a number of small workings in the Jackson Mine area. In the northern part of the Forest are several small, scattered prospects. The Deer Creek Fire Agate Mine I is in the northeast part of the Forest, and is the only known site where there is current mining activity.
I Between 1908-1940, the Rattlesnake mining district produced 537 st of ore
that yielded 163 oz gold, 2,310 oz silver, and 12,200 Ib copper (Creasey and others,
1981, p. 34). At 1993 metal prices this production would be worth about $76,000.
I There are no records of production from the other small mines in the Forest, but any I production from them could have been assigned to the Rattlesnake district. Compared to the Rattlesnake district, the Copper Creek district had a I substantial amount of production. Rich lead-silver ore was first discovered in this I district in 1863, but there was little production until the 1900's. The majority of production from the Copper Creek district was between 1936 and 1938. Production I figures vary among different sources of information, but between 1905-1959, the district produced approximately 11,060,000 Ib copper, 4,170,000 Ib molybdenum,
I 3,190,000 Ib lead, 1,354 oz gold, and 240,000 oz silver. (See Creasey and others, I 1981,p. 33;Kuhn, 1951,p. 57, Simons, 1964, p. 154.) At 1993 metal prices this I I
I production would be worth approximately $21 million; about 89% of this value is from i the copper and molybdenum. MINERAL APPRAISAL
I Northern Galiuro Mountains I Several small prospects are in an area of altered andesite in the northern part of the Forest (plate 1, fig. 2). Samples GA 1-7 taken from the prospects all had low i metal concentrations (appendixes B, C), and no resources could be defined. Outside the northwest boundary of the Forest is the Copper Creek mining
I district where a substantial amount of copper, lead, and molybdenum was produced, I along with gold and silver. The minerals occur in both breccia pipes and vein deposits, in the Copper Creek Granodiorite and in the Glory Hole Volcanics. These mineral-
I bearing formations nearly border the northwest Forest boundary; inside the Forest they g are blanketed with a thick sequence of younger-aged Galiuro Volcanics. The mineralized older rocks undoubtedly extend eastward beneath the younger rocks, in
I the north and northeastern part of the Forest. Creasey and others (1981, plate 2) I show an area of about 30 mi = to be favorable for copper prospecting at depth inside the Forest. Any mineral resources in the older rocks in the Forest would need to be
! confirmed by drilling.
Rattlesnake mining district J I The Rattlesnake mining district is near the geographic center of the Forest and I includes workings in upper Rattlesnake Creek, and the Powers and Long Tom Mines I in upper Kielberg Canyon. I I 7 i
I Upper Rattlesnake Creek i In upper Rattlesnake Creek two adits are adjacent to each other; one is 45 ft long and the other has 370 ft of workings (fig. 3-5). These adits are referred to as the
I Gold Mountain workings by Creasey and others (1981, p. 75). The shorter adit I follows two prominent shears in fine grained rhyolite porphyry (fig. 4). Three samples from the adit (GA 8-10) had low metal concentrations. The longer adit intersects I several fault zones in rhyolite (fig. 5). Altered rhyolite and iron stains are abundant in the adit. Samples GA 11-21 from the adit all had low metal concentrations, and no
I mineral occurrences were identified at the two adits. I Powers Mine The Powers Mine (fig. 6, plate 1) is in upper Kielberg Canyon and consists of
I two adits with about 625 ft of workings. The mine is one of two major producers in I the Rattlesnake district. The adits intersected four major shears in rhyolite. No resources were identified at the Powers Mine during the Bureau's investigation of the
I Galiuro Wilderness (Creasey and others, 1981, p. 74). Nineteen samples from the I workings showed the presence of spotty gold and silver mineralization associated with the shear zones. I Long Tom Mine I The Long Tom Mine (fig. 7, plate 1) is in upper Kielberg Canyon, about 1 114 mi south-southeast of the Powers Mine, and consists of 2 adits with 455 ft and 135 I ft of workings, and a caved shaft reported to have been about 40 ft deep (Creasey and others, 1981, p. 73-77). The workings intersect several fault zones in rhyolite, up to
I 3 ft thick, consisting of fractured rhyolite, altered rhyolite, and gouge. Fifteen samples I I I
taken during the Bureau's previous investigation had generally low gold and silver I concentrations, and no resources were identified. About 1/2 mi northwest of the Long Tom Mine, at the mouth of an unnamed i tributary to Kielberg Canyon, an adit was driven about 20 ft along a zone of limonite I gouge. A chip sample taken across the 1-1/2-ft-thick gouge zone had a low precious metal concentration (Creasey and others, 1981, p. 75). I Sixteen-to-One Mine The Sixteen-to-One Mine is just inside the Forest boundary on the west side,
I southwest of the Rattlesnake mining district (fig. 8, plate 1). The mine consists of 2 I adjacent adits with about 160 ft of workings (fig. 9), and an adit complex with 2 levels and stoping, totaling about 275 ft of workings (fig. 10). The adits were driven in
I rhyolite and silicified rhyolite and intersected several major faults, the largest about 6 I ft thick. Fifteen samples taken during the Bureau's previous investigation (Creasey and others, 1981, p. 87-90), showed the presence of low gold and silver concentrations
I in the faults, along with minor amounts of copper oxides. No resources were identified I in exposed rocks at the Sixteen-to-One Mine; the possibility of resources at depth is conjectural. I Southern Galiuro Mountains I In the southern Galiuro Mountains are a number of prospect pits and several small shafts and adits in altered and mineralized areas along or near a north- to I northwest-trending fault between rhyolite and andesite. The prospects are between the Jackson Cabin area and the Jackson Mine area, along a distance of about 2 mi (fig.
I 11, plate 1). Forty-seven samples were taken from these prospects by Bureau I personnel during a previous investigation (Creasey and others, 1981, p. 80-85) and I 9 I
assays showed a highly erratic distribution of gold, silver, and copper mineralization, i with generally low concentrations of these elements. There is no recorded production for this area, and no resources were identified during the Bureau's 1981 investigation.
I CONCLUSIONS I Although no mineral resources could be identified in the Galiuro Mountains Unit study area during this investigation or in the earlier mineral resource studies by the I Bureau and U.S. Geological Survey in the 1970's (Creasey and others, 1981 ), mineral deposits similar to those mined in the Copper Creek district may be present in the
I Forest. Large copper-molybdenum resources may occur in geologically related host I rocks. The likelihood of mineral resources at depth is difficult to assess, however, because the principal rocks in the study area are younger than the known mineral-
I bearing rocks in the adjacent Copper Creek district and elsewhere in southeastern r| Arizona. Creasey and others (1981) show an area of about 30 mi = to be favorable for
copper prospecting at depth inside the northern part of the Forest. Any mineral
I resources in underlying older rocks in the Forest would need to be confirmed by I drilling. I I I I I I 10 II ¸ REFERENCES
Cantou, P. M., 1977, Fire agates in Arizona and California, in Lapidary Journal, June, I 1977, p. 812-818.
Creasey, S. C., Jackson, E. D., and Gulbrandsen, R. A., 1961, Reconnaissance geologic map of parts of the San Pedro and Aravaipa Valleys, south-central Arizona: U.S. Geological Survey Mineral Investigations Field Studies Map MF- I 238, scale 1 : 125,000. Creasey, S. C., Jinks, J. E., Williams, F. E., and Meeves, H. C., 1981, Mineral resources of the Galiuro Wilderness and contiguous Further Planning Areas, I Arizona: U.S. Geological Survey Bulletin 1490, 94 p. Kuhn, T. Ho, 1951, Bunker Hill district, in Arizona zinc and lead deposits, chapter 7, I part 2: Arizona Bureau of Mines Bulletin 158, Geological Series 19, p. 56-65. Simons, F. S., 1964, Geology of the Klondyke Quadrangle, Graham and Pinal Counties, I Arizona: U.S. Geological Survey Professional Paper 461, 173 p. I I
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APPENDIX A
I DATA FOR SAMPLES FROM THE GALIURO MOUNTAINS UNIT, CORONADO NATIONAL FOREST, GRAHAM COUNTY, ARIZONA I I I
12 Appendix A.--Data for samples from the Galiuro Mountains, Coronado National Forest. {xx, not applicable} I Sample Number Type Length Remarks
I GA 1 Grab XX Outcrop in bulldozer cut; large area of alteration and iron staining; rock highly fractured and brittle, area mapped as lower andesite unit of the I Galiuro Volcanics; numerous vesicles partially filled with limonite. I GA 2 Grab XX Outcrop along road; altered and fractured volcanic rock, bleached white, iron stained, prominent shearing, largest shear zone 1 ft thick; I limonitic gouge. GA 3 Grab XX Shallow trench; bright orange-tan, intensely altered volcanic rock; small phenocrysts of I feldspar in aphanitic matrix. GA 4 Grab xx Do. i i I GA 5 Grab xx Outcrop; highly altered and weathered aphanitic volcanic rock, bleached whitish-gray; iron I staining on surface. GA 6 Grab xx ,i Outcrop along roadcut; bright orange-tan, intensely altered volcanic rock; area mapped as i lower andesite unit of Galiuro volcanics. I i GA 7 Grab xx ' Outcrop; intensely altered and iron stained i , j, volcanic rock; secondary chalcedony. I GA 8 Chip 6 ft Adit, 45 ft long; fine-grained volcanic porphyry; moderate iron staining; prominent shear. (See I figure 4.) GA 9 Chip 4.5 ft Do. i i GA 10 Chip 4.5 ft Same adit as sample GA 8; some altered and I bleached rock; minor gouge. i i GA 11 Chip 5.5 ft Adit, 370 ft of workings; porphyritic volcanic I rock; prominent fault fracture; prominent iron stains. (see figure 5) i GA 12 Chip 4 ft Do. I i i GA 13 Chip 3 ft Same adit as sample GA 11 ; prominent fault I fracture; iron and manganese stains.
13 Appendix A.--Data for samples from the Galiuro Mountains, Coronado National Forest.- Continued
Sample I Number Type Length Remarks GA 14 Chip 3 ft Same adit as sample GA 11 ; volcanic rock, iron I stained. GA 15 Chip 4 ft Same adit as sample GA 11 ; iron stained volcanic rock; thin fractures with limonite gouge. I GA 16 Chip 3 ft Same adit as sample GA 11 ; prominent fracture zone; altered, brecciated volcanic rock; gouge, I iron stains. GA 17 Chip 3 ft Same adit as sample GA 11 ; altered, fractured volcanic rock; iron stains. I GA 18 Chip 3 ft Same adit as sample GA 11 ; prominent fault zone; fractured, altered volcanic rock; iron stains. I GA 19 Chip 3 ft Same adit as sample GA 11; fractured, iron stained volcanic rock. I GA 20 Chip 3.5 ft Same adit as sample GA 11; prominent fracture zone; altered volcanic rock; abundant iron stains. GA 21 Chip 3 ft Same adit as sample GA 11; prominent fault I fracture; brecciated volcanic rock; gouge, limonite. I GA 22 Chip 4 ft Prospect pit, 5 ft deep; iron stained volcanic rock. I GA 23 Chip 3 ft Outcrop; iron stained volcanic rock. I
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14 I I
I
'I I APPENDIX B I
INDUCTIVELY COUPLED PLASMA-ATOMIC EMISSION SPECTROSCOPY I MULTI-ELEMENT ANALYTICAL DATA FOR SAMPLES ANALYZED BY CHEMEX LABS, INC. I I ,i ~
?1
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15 I m m n i | m m n m m m n m i __ m m m I m
Appendix B.--I.nductively coupled plasma-atomic emission spectroscopy multi-element analytical data for samples analyzed by Chemex Labs, Inc.
[<, less than lower detection limit (some elements have elevated lower detection limits due to interference from other elements}]
GA 01 0.8 3.00 30 50 • 0.5 10 0.00 • 0.S 11 152 30 5.68 10 • 1 O.22 3O 1,94 485 S 0.06 30 1840 42 • 5 6 28 0,01 < I0 • I0 105 < lO 94 CA 02 1.2 3,07 20 210 1o0 14 0.36 • 0.5 34 42 57 5,|8 10 • 1 0.72 30 0.77 245 7 0,07 57 1570 158 • 5 5 300 • 0,01 • 10 < I0 61 • lO ]9 CA 03 1,2 2,34 25 130 1,5 • 2 0.14 < o.s 13 27 7 2.27 20 • 1 0,00 50 0.24 3o 7 0,07 25 640 44 • S 2 325 0.OI • 10 • 10 49 • 10 24 CA o4 0.4 3.70 55 550 hO 6 0.28 < O.5 9 55 0 5.52 10 • 1 O.03 20 O.25 50 10 0.24 • I 1150 74 • 5 4 405 0.02 • IO • 10 89 • 10 16 GA 0S 0.4 1.51 25 340 < 0,5 10 0,34 • O.8 • I 99 • I 1.45 |0 • I 0.57 • IO O.15 55 5 O.07 1 860 16 < 5 1 58 • 0.O1 • IO • IO 27 • 10 8
CA 06 1.2 4.07 40 40 |.0 • 2 0.60 • O.$ 24 158 48 5,18 20 < I O.2S 40 2.69 495 5 0,04 119 1830 54 • 8 8 116 O,51 < IO • IO 130 < 10 104 CA 57 0.0 1.33 30 220 ( 0,5 < 2 0,07 • O,5 O 62 31 3,30 • IO • I 0.07 • IO 0.06 GO 12 O.05 ? 340 00 • 5 • 1 284 < 0,o1 • IO < I0 33 ~ 10 30 CA 08 < 0,2 0.40 3S 20 < O.S < 2 1.75 < O,8 • 1 73 151 1,31 20 z 0.36 20 0.14 115 4 0.01 10 120 32 • 5 1 19 0.01 • 10 < 10 B < 10 20 GA 09 0.4 0.37 50 ¢ 10 I.S |5 0,58 < O,S • 1 101 253 2,37 IO 4 O,2g 20 O,O5 240 6 0.04 6 100 O • 5 ! IO < 0.01 < IO < 10 5 < 10 ]9 GA IO 2.0 O.92 40 20 5.5 < 2 0.33 • O.5 • 1 28 144 |.24 20 • I 0.$1 60 O,10 875 2 O,07 6 120 IO45 • 5 1 I1 • O,O1 • |O < 10 4 |0 132
CA 11 0.2 0.47 10 10 1.5 < 2 0.28 < 0.5 < I 115 192 |,82 tO • I 0.43 60 0.04 180 3 O,04 2 110 52 • 5 1 0 < 0.01 < 10 • 10 4 • I0 10 CA 12 0.4 0.36 10 < 10 0,5 • 2 0.29 < 0,5 • 1 69 100 |,05 IO • I 0.28 70 0.53 390 4 0.02 7 120 12 • 5 1 S ': 5.01 < 10 < 10 8 • 10 18 CA 13 3.4 0.50 10 IO 2,5 • 2 0,48 • O.5 • I 101 193 1.94 10 7 0.36 30 0,O5 1200 4 0,03 I0 ,tO 52 • S 1 lO 0.01 < 10 < 10 3 • I0 82 CA 14 0.2 0,50 < 5 < 10 1,5 < 2 0,21 • 0,5 2 69 112 1,98 20 • I 0,39 80 0,03 130 3 0,04 5 6O B • 5 1 0 < 0.01 • IO • 10 3 • 10 22 O~ GA IS 0.6 0.32 30 10 0,S • 2 5.23 • O,S • I 87 149 1.45 ¢ 10 | 0.27 30 0.04 020 7 0.02 12 20 30 • 5 I 5 • 0.01 • IO • 10 3 • 10 3O GA 16 0,2 0.65 < S 10 1,5 • 2 O.15 < 0.5 < 1 44 46 1,27 10 2 0.30 20 0,OS 945 2 0.05 2 60 56 • 5 1 7 • 0.01 • 10 • 10 3 • I0 60 GA 17 < 0,2 0.70 5 30 0,5 6 O.15 • O.5 2 73 50 1,11 10 < I O,34 40 0,O6 Z05 1 0,07 10 3o 34 • S 1 0 < 0,01 • 10 • IO 4 • 10 76 GA 18 0,2 1,75 40 30 1.O • 2 0,27 < O.5 • 1 53 52 0,80 20 • I O.$5 40 0,18 300 I 0.02 4 70 42 < 5 1 27 • 0,01 • 10 < 10 4 • 10 $2 CA 10 0.6 0.53 10 < 10 < 0.S • 2 O,20 < O.5 • | 55 96 1,44 |0 3 0,40 20 0,02 135 3 0.05 3 10 32 < 5 • 1 0 < 0.01 • 10 < 10 2 • 10 O CA 25 < 0.2 0.37 IS < 10 < O,5 14 O,21 < O.5 • | 41 91 1.40 < 10 < I 0.23 IO 0.03 75 | 0,03 6 30 24 • 5 < 1 5 < 0,01 • 10 • 10 2 • 10 10
CA 21 0,6 0.57 25 10 < 0.5 < 2 1.18 < 0,5 • I 63 131 1.37 20 • I 0.49 40 0.09 I05 3 0.03 4 • lO 25 • S ! 9 • 0.01 • 10 • I0 S • 10 14 GA 22 • 0.2 0.73 20 IO 0.5 < 2 0.10 • 0.5 • I 44 27 0.86 I0 I 0.29 30 0.04 615 3 0.0O • I 6O 22 < 5 • 1 S • 0,0! • JO • I0 2 • 10 20 CA 23 • 0.2 0.51 20 10 < 0,5 4 0.13 < O.S 1 75 50 |.13 10 < I 0.36 30 0.02 445 < 1 0.04 3 40 20 < 5 • | 3 • 0.01 < 10 < 10 2 ( 10 16 I
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APPENDIX C
NEUTRON ACTIVATION MULTI-ELEMENT ANALYTICAL DATA FOR SAMPLES ANALYZED BY BONDAR-CLEGG & COMPANY LTD.
11 17 I mm m m m m n m m m m mmm m m m m m m m m
Appendix C.--Neutron activation multi-eleme,nl; analytical data for samples analyzed by Bondar-C!e.q.q &,Company Ltd.
[<, less than lower detection limit (some elements have elevated lower detection limits due to interference from other elements)]
CA 01 • S IS • 5 1100 • | • 10 63 • 10 260 2 • 2 5,0 7 < 100 35 • 0,5 5 2.40 < 50 CA 2,2 18.0 • 10 4,6 • 2o0 2 • 1 • 20 10,0 2,3 < 2 • 5 < 200 • 500 GA 02 • 5 17 • 5 490 • I • I0 110 23 150 5 • 2 5.1 g • 100 50 • 0,5 1 0.67 • 50 160 1.5 |6,0 • 10 8.5 • 200 | 1 • 20 15.0 4.7 < 2 • 5 < 2OO 76O GA 03 < 5 10 < 5 940 < I • |0 120 • 10 57 1 • 2 1.8 0 • 100 54 • 0.5 4 1.70 • 50 220 1.0 7.4 < 10 8,5 < 200 2 1 • 20 27.O 7,1 2 < 5 • 20O • 500 GA O4 • 5 36 < 5 1300 • I < 10 07 < 10 140 • 1 • 2 5.2 0 • 106 49 < 0,5 5 0.66 • SO 85 1.0 10.0 • 10 7.2 < 200 | < I • 20 12.0 2.6 • 2 • 5 • 200 • 5O0 GA 05 < 5 13 • 5 49O < I • I0 49 • 10 160 2 • 2 1.2 4 < 100 24 • 0,5 7 0,14 • 5O 68 1.0 7,3 • I0 4.3 • 200 • 1 < 1 • 20 7,O 2.0 2 • 5 • 200 • 5OO
GA 06 • 5 40 • 5 970 < 1 • 10 54 12 260 I • 2 4.3 4 • IC~ 33 • 0.5 5 0.65 9O 160 0.9 14.o < IO 5,5 • 200 • 1 • 1 • 20 8.9 3.1 < 2 < 5 < 200 • 500 CA 07 • 5 23 • 5 740 < 1 • 10 75 < 10 140 • 1 • 2 2,5 ($ • IC~ 31 • 0.5 12 O.17 < 50 14 1.6 I0.0 < IO 7,5 < 200 • 1 • 1 • 20 0.4 2.O < 2 < S < 200 < 500 GA 00 • S 27 5! < 100 • | • 10 56 < IO 90 3 • 2 1.0 $ • 100 21 1,4 3 O.10 • 20 540 6.6 1.4 • 10 4.6 • 200 2 < I < 20 23,0 7.2 2 < 5 < 200 < 500 CA 09 < 5 29 75 < 100 < 1 • I0 ;7 < ]0 120 3 • 2 1,5 G • 100 22 1.3 B O,15 < 20 600 2.2 1.6 < I0 5,0 < 200 2 : ¢ 20 24,0 5,9 < 2 < 5 < 200 < 500 GA 10 • 5 16 440 590 • | • 10 100 < 10 < 50 0 • 2 1.0 0 • 100 40 1,0 • 2 0,53 • 20 530 3.3 4,2 < 10 7.5 • 200 2 i < 20 26.0 10,0 3 < S < 2O0 < 500
GA 11 • 5 I1 29 < 100 • 1 • 10 i|O < IO 14o 4 • 2 1,3 4 • 100 48 1,3 6 O,14 22 690 2.3 2,0 < 10 3.1 < 2O0 2 • 1 • 20 34.0 7.? 3 < 5 < 2O0 < 500 GA 12 • 5 16 32 < 100 • | • IO 120 • 10 59 3 • 2 1,3 ~e • IGO $1 1,7 3 0.16 • 20 570 0,9 1,5 < 10 11.0 < 2O0 2 2 < 20 25.0 7.0 < 2 < S < 200 < 500 GA 13 < 5 13 35 < 100 • I • 10 78 • 10 llo 4 • 2 1.4 7 • 100 28 1.6 4 0,37 • 20 540 1,5 1.7 < Io 7.1 • 200 2 | • 20 24,0 6.0 < 2 • $ < 200 < 5OO CA 14 < 5 15 190 • 100 • I • 10 11o < 1o 1oo $ < 2 1,7 3 < |00 47 1.9 2 0.14 • 20 500 1,2 2.3 • io 5,5 • 200 2 • I • 20 31.0 8.4 < 2 • 5 • 200 • 5OO GA 15 < 5 11 42 • 100 • 1 • 10 51 < 10 140 3 • 2 l,I $ < 100 28 1.5 S 0,40 • 20 590 1.2 2.3 < IO 2.0 < 200 2 • I < 20 34.0 7,4 • 2 • S • 209 < 500
0o GA 16 • 5 19 33 • 100 < 1 < 10 54 • 10 65 3 < 2 0.9 $ • 106 19 1.7 2 0,76 < 20 390 1.3 1,8 < 10 5.6 • 200 2 < I • 20 25.0 7,0 < 2 < S • 200 • 500 GA 17 • S 11 13 640 < 1 < 10 76 < i0 100 3 • 2 1.1 ? < lO0 31 1.5 2 1.00 < 20 430 1.7 2,4 • I0 4.5 • 200 2 < 1 < 20 25.0 6,7 2 < 5 • 200 < 500 GA 18 < 5 13 26 420 • | < 10 130 • 10 05 9 • 2 0.7 4 • |0¢ 39 1.5 3 0.21 • 20 470 1.4 2.8 • 10 4,2 • 20O 2 • I < 20 29,0 ?.1 • 2 • $ • 200 • 500 GA 19 < 5 21 88 < 100 < | < 10 68 • 10 71 3 • 2 1.2 6 • |00 22 |,1 4 0.17 • 20 530 1,8 1.6 • 10 3.5 • 2O0 2 • | < 20 21,0 3,0 < 2 • S • 20O • 5O0 GA 20 < 5 27 10 < 100 < 1 < 10 42 • 10 69 3 • 2 1.3 ? < 100 21 1,6 < 2 0.53 • 20 500 1.3 1,6 < I0 3.9 • 200 2 < 1 • 20 23,0 6.0 < 2 < S < 200 < 506
GA 21 • 5 18 21 • 100 < 1 • I0 88 • 10 99 2 • 2 1,2 6 • t00 29 1,3 4 0.16 < 20 550 1.3 1.0 < |O 6.7 • 200 2 I • 20 22.0 S.5 2 • S • 200 • 500 GA 22 • 5 IS • S < 100 • 1 • 10 46 • 10 < 50 4 < 2 0.6 3 < |00 25 1.0 • 2 1,00 < 20 340 2,3 1.6 < 10 2,9 < 200 2 < I • 20 26.0 4.0 • 2 < $ • 200 • 500 GA 23 < 5 7 13 < 106 • 1 < 10 46 < 10 00 4 • 2 0,8 4 < 100 25 l.l < 2 0.53 • 20 480 1,2 1.6 • 10 2.0 • 200 2 • I • 20 24.0 6,1 • 2 • 5 • 2O0 • 500 |
;il! I ¸¸¸¸ i;11
APPENDIX D I DATA FOR INDIVIDUAL MINES AND PROSPECTS IN THE GALlURO MOUNTAINS I UNIT, CORONADO NATIONAL FOREST, GRAHAM COUNTY, ARIZONA I iii~!l
19 m
I Mine Name or Mineralized Area Unnamed bulldozer cut
I Location
Near head of Fourmile Creek. I NE. 1/4 sec. 2, T. 8 S., R. 19 E. I Production None.
I Development I Shallow bulldozer cut, may have been a drilling site. Current Status I Inactive. I Miscellaneous Sample GA 1. I Geologic Description and Ore Mineraloqy Large area of alteration and iron staining, highly fractured and brittle andesite, numerous vesicles partially filled with limonite; area mapped as lower andesite I unit of the Galiuro Volcanics. I References Simons, 1964, plate I. I I
iii 20 jLI
II Mine Name or Mineralized Area I Unnamed trench Location
Head of Left Branch of Long Hollow I NW. 1/4, sec. 12, T. 8 S., R. 19 E. I Production None
I Development I Shallow trench about 40 x 15 ft. Current Status
I Inactive. I Miscellaneous Sample GA 3. I Dump about 200 st. Geologic Description and Ore Mineralogy
Highly altered and weathered aphanitic rock, mapped as andesite, bleached I whiteish-gray, iron stains on surface, small phenocrysts of feldspar. I References Simons, 1964, plate 1. I J I I I
21 ii~I ¸
Mine Name or Mineralized Area I Unnamed trench Location
Head of Squaw Creek. I NW. 1/4 sec 12, T. 8 S., R. 19 E. I Production None.
I Development I Shallow trench (may be erosion scar). Current Status
I Inactive. I Miscellaneous Sample GA 4. I Geologic Description and Ore Mineralogy Intensely altered volcanic rock, bright orange-tan, small phenocrysts of feldspar I in aphanitic matrix. I References Simons, 1964, plate 1. I J I
JJ
22 I Mine Name or Mineralized Area I Unnamed adit (Gold Mountain workings) Location
Upper Rattlesnake Creek I SW. 1/4 sec 31, T. 9 S., R. 20 E. I Production None.
I Development I 45-ft-long-adit. Current Status
I Inactive, inside designated wilderness. I Miscellaneous Samples GA 8-10, fig. 4. I Dump about 1,000 st. Geolo.qic Description and Ore Mineralogy
Prominent shears in fine-grained rhyolite porphyry, iron staining, some alteration, I minor gouge. ,I References Creasey and others, 1981, p. 70, 75, 78-80. I I
23 !
Mine Name or Mineralized Area I Unnamed adit (Gold Mountains workings) Location I Upper Rattlesnake Creek. SW. 1/4 sec. 31, T. 9 S., R. 20 E. i Production Likely none.
i Development I Adit, 370 ft of workings. Current Status
I Inactive, inside designated wilderness. I Miscellaneous Samples GA 11-21, fig. 5. I Geolo.qic Description and Ore Mineralofly Rhyolite porphyry, commonly fractured, several faults in adit, limonite and gouge I in some; common iron stains, manganese stains, altered rhyolite. References
I Creasey and others, 1981, p. 70, 75, 78-80. I t |
• I •'I¸~
i 24 ii?i~I
I Mine Name or Mineralized Area Powers Mine
I Location
Upper Kielberg Canyon. I SE. 1/4 sec. 6, T. 10 S., R. 20 E. I Production Production for Rattlesnake district between 1908-1940: Ore 537 st i Gold 163 oz Silver 2,310 oz Copper 12,200 Ib I (The Powers and Long Tom Mines were the 2 major producers in the Rattlesnake district)
l Development
Adit with about 480 ft of workings including 2 winzes and 1 raise, an adjacent adit with about 25 ft of workings. I Current Status Inactive, inside designated wilderness. i Miscellaneous Figure 6, plate 1.
I Geologic Description and Ore Mineralo.qy
Four major shears in rhyolite, limonite, gouge, altered rhyolite. Spotty gold ~.nd I silver mineralization. i References Creasey and others, 1981, p. 71-74. I I
25 I
I Mine Name or Mineralized Area Long Tom Mine
I Location
Upper Kielberg Canyon. I SE. 1/4 sec. 7, T. 10 S., R. 20 E. I Production (See production figures previous page.)
I Development
Two adits, 455 and 135 ft of workings, a caved shaft reported to have been i about 40 ft deep. I Current Status Inactive, inside designated wilderness. I Miscellaneous I Figure 7, plate 1. Geologic Description and Ore Mineralogy
Several fault zones in rhyolite, up to 3 ft thick; faults contain fractured, altered i rhyolite, gouge; low gold and silver concentrations in the zones. I References Creasey arid others, 1981, p. 73-77. i |
26 i:i~i ii! i
Mine Name or Mineralized Area
, Unnamed adit.
Location
At mouth of unnamed tributary of upper Kielberg Canyon, about 1/2 mi northwest I of Long Tom Mine. NW. 1/4 sec. 7, T. 10 S., R. 20 E.
I Production I None. Development
i Adit, about 20 ft long. I Current Status Inactive, inside designated wilderness. i Geoloqic Description and Ore Mineralo.qy I Zone of limonite gouge, 1 1/2 ft thick, strike N. 59 ° W., dip 58 ° SW., in rhyolite. References I Creasey and others, 1981, p. 75. I I
,|
27 ! |
i! I .... Mine Name or Mineralized Area ! Sixteen-to-One Mine Location
| Unnamed south tributary of Kielberg Canyon. SE. 1/4 sec. 10, T. 10 S., R. 19 E.
! Production ! Possible small gold and silver; none recorded. Development ! One adit complex with 2 levels and stoping, about 275 ft of workings. Two adjacent adits with about 160 ft of workings. ! Current Status Inactive, inside designated wilderness. I Miscellaneous Figures 8-10.
I Geologic Description and Ore Mineraloqy
Fault zones up to 6 ft thick in rhyolite and silicified rhyolite, limonite stains, low I gold and silver assays, minor copper oxides. I References Creasey and others, 1981, p. 87-90. I I
I
I 28 Mine Name or Mineralized Area
Jackson Mine and vicinity, Southern Galiuro Mountains
I Location
Southern Galliuro Mountains, Redfield Canyon, Jackson Canyon, Mitchell Canyon I and vicinity. Sec. 4, 9, 16, 22, T. 11 S.,R. 20 E.
I Production I Possible small gold, silver, and/or copper; no recorded production. Development
I Numerous pits, several shafts ranging from shallow to 300-400 ft deep, several short adits.
Current Status i Inactive, mostly inside designated wilderness. Miscellaneous I See fig. 11. Geologic Description and Ore Mineralogy
I Altered and mineralized areas associated with a north- to northwest-trending fault zone between rhyolite and andesite, highly erratic distribution of gold, silver, and I copper minerals within and adjacent to fault, overall low assay concentrations. References
I Creasey and others, 1981, p. 80-85. I ~|
29 I i
! Mine Name or Mineralized Area
Deer Creek fire agate mine
I Location
Near Deer Creek. I NE. 1/4 sec. 11,T. 9 S., R. 20 E. I Production Fire agate and chalcedony, amount of production difficult to assess.
I Development I Open cut, several hundred feet long. Current Status I Small-scale mining operation. Miscellaneous
I Plate 1. I Geologic Description and Ore Mineraloav Fire agate with chalcedony in pockets and cavities in volcanic rock.
I References I Lapidary Journal, 1977, p. 812-818. I | ii i 30 I I I
APPENDIX E I MINE LOCATION AND MINE MAP FIGURES FOR THE GALIURO MOUNTAINS UNIT, CORONADO I NATIONAL FOREST, GRAHAM COUNTY, ARIZONA I
i~!,!~i~|~~. I 31 I :iI
1 I ...... " ..... ~(t .....~ -J i" i~ / , I I I I i:::¸1 ¸.~ i:l
Scale 1"--1665' I I I I I I 0 FEET 1000 2000 3000 4000 I
I Figure 2.-Prospects at the north end of the Galiuro Mountains showing sample localities GA 2-7. I 32 I
SEC 36 SEC 31
I I I R. 19E, R. 20E.
I i r Scale 1~--1550 ' -N- I I I I 0 FEET 1000 2000 3000 4000 I
I Figure 3.-Mines and prospects near Rattlesnake Creek showing sample localities GA 8-23. ! 33 I
I -N-
I I I I 20 0 20 feet- I | I ! I GA10 I GA9
I Country rock ash flow tuff I I
I GA6
Figure 4.-Adit adjacent to Rattlesnake Creek showing sample localities GA 8-10. I 34 I I I -N- 1
I I I I 40 0 40 foo~-
I Concrete dam 2 1 /2 ft, hiBh / t I Country rock Winze filled ash flow tuff with water I
I GA13~ fGA18 fGA17 GA15-~ I GA14 I I I I I I
I Flsure 5.--Adit adjacent to Rattlesnake Creek showin8 sample localities GA 11-21. I 35 = : = m m M u ~ m m m m u m m m I m =
-N-
I I 1 4S 0 45 feel
/0~ Mine data
Country rock rhyolite
Fisure 6.-Powers Mine (map from Creasy and others, 1981). ,fMine data t ..= I -N- !
I I I ! I00 0 I00 foot ! '4~ )) ! ! \\ \\ \\ I \\ \\ \\ \\ ! \\ \\ \\ \\ \\ ! \X Country rock rhyolite \X \\ X\ \x ! \\ ! ! t ! t I I 1 / ! /r ! Figure 7.-Long Tom Mine (from Creasy and others, 1981). 37 I i~ii~I,
......
I
r,
Scale 1"- 1600' I t t I I -N- OFE~ 1000 2000 3000 4~
Figure 8.-Sixteen-to-One mine.
38 i~i¸ l.. ¸ I I
fo I I I 33 0 33 f~f
I I I I s /
I / Country rock I Silicified rhyolite
I #
I data I
/ I / I
I Figure 9.-Sixteen-to-One Mine, northern adits (from Creasy and others, 1981). I 39 ~I I -~-
I 33 fe~f I Mine data
...J %%% i --,,,,, ,,"
I Lower Level 25 ft. below I ,Co;nJ~Yrt~; oC~i upper level ! Si" " " te v'/" I I
- A' I A
I f I Cross Sectio- :iI Figure 10.--Sixteen-to-One Mine southern adit (from Creasy and others, 1981). I 40 il
i /l' t 4. ., . - , .. > ~.
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APPRoXIMkTE BOUNDARY OF THE GALIURO WILDERNESS II II r=~=i¢ . -,~"J4 ~~~~~~/'; ..~", I~~~e ~' 2: 3t )S-.~"~'~ r / 1 t~'-~l" / I.E./~~g~' ;w,f~,,t,o.i ~ T ,~ t ~'1/~ / ' "'~lJ x 8URF~CE OPENINGS--Showing eample Io¢llllty number ~[~ I ~_. li~ir- i / ~ ~J ~'i ~,(~..~_.<, v',,~..$.. "'-, -'+ 4,'--.~,, '+ ~I'~" ...... :~i //I " "'-'~'>+"-' + " + +'-T~: -- _q ~, ""~..- ~ '~'=~,o ~--~--..~.,,. "'" . Cr ", ,,,.,,0o...... ,,,.:o.,% ~<, s" ; ' )""- ADIT .., ~ == ,o =~, . e,,. ,I "7 .~:"0" ,. ....: ~o ~,.,.,,.,:~: ~ :.' "" ~. " li'" , . ,- , -- . , --- . ~- 1/.., •" .+ --¢..~f_._~.+ .... + :I ~" i+_._.J__+ °,"~ FIRE AGATE MINE i.*'-... I;l~l. ';, - ¢ ' . ,,,;~, --, ::- ~- +, " + + : ,+ ,' i~ .... ,J~9~!e2, -N ~--J - a n | 7/. lu , /I --+l.~.~'-f~~'~'-H~+' -~' '+': ~-~l i ' SCALP 1:1,,.,,o .~-.~]1~c ==(,i-,,,-,r,,.--.,TF. ,~ liiii i[ -''''" ''Fiff7 .... 7->;.':~ ~ ,,,.-'--'1( :~;.~ zi- '~~~7i :_ 'h ~, " • .~., :~-~-¢QrX k Sp ~'" ~=i-; i l "'" + I '- -: - =~,= - + / / / 12". 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