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publications significancein interpreting ancient analogs, by 0pen-filereports New C. R. Handford, A. C. Kendall, D. R. Prezbin- NMBMMR 1{MBMMR dowski,J. B. Dunham, B. W. Logan, 1984:Geol- ogy, v. 72, no. 9, pp. *l47-Geology D *Annual Report-Annual report for the fiscal year 523-527. of the Cross Mountain quadran- Basementcontrol of Tertiary intrusions and as- gle, Socorroand Catron Counties, New Mexico, July 1, 1982,to june 30, 1983,by F. E. Kottlowski sociatedmineral deposits along Tijeras-Cafr by B. R. Robinson, 1987, 225 pp., 2 and staff,36 pp. $3.00 on- tables, 11 cito fault svstem, New Mexico. bv L. A. SummarizesBureau activities and servicesfor figs.,24pls. $46.50 Woodward, i984: Geology,v. 12, no. 9, pp.531,- +207-Geology and coal resources the fiscal year. Includes articles on mineral ex- of the FenceLake 533. 1:50,000quadrangle, ploration in New Mexico in 1983, mineral and by F. W Campbell and G. Cordilleran metamorphic core complexes-Ceno- H. Roybal, 7984,37pp., 2 mineral-fuel production in 1982and 1983,and tables,7 figs.,2pls. zoic Upper Cretaceousguide fossil extensionalrelics of Mesozoii compression, $10.40 by P. Coney,T. A. Harms, 1984: v. *2l.2-Origin *Geologic Map S9-Geology of South Peak quad- J. Giology, of Riley havertine as constrainedby 72, no.9, pp. 550-55a. the clay mineralogy of acid- rangle,Luna County,New Mexico,by R. E. Cle- and EDTA-insoluble Reinterpretation of Lime Peak thrust as a low-an- residues,by J. fr{. Barker,1984,77pp. $15.40 mons, 1985,I sheetwith text, 2 crosssections, *21}-Preliminary scale1:24,000 gle nbrmal fault-implications for the tectonics estimatesof rechargeat the Na- of southeastern Arizona, by W. R. Dickinson, vajo South Peak quadrangle is one of four conter- mine based on chloride in the unsaturated 1984:Geology, v 72, no.70, pp.670-673 zone, by W. f. Stone, 79U, 60 pp., 5 tables, 8 Sedimentary fluorite in a lacustrine zeolitic tuff of figs. $12.00 the Gila conglomerate near Buckhorn, Grant *2ltl-Recharge in the Salt Lake coal fie]d based County, New Mexico, by R. A. Sheppard and F. on chloride in the unsaturated zone, by W J. A. Mumpton, 1984:journal of SedimentaryPe- Stone,1984, 67 pp.,5 tables,14 figs. $13.40 trology, v. 54, no. 3, pp. 853-860. *2l7-Investigation of alluvial valley floors in the Terrestrial heat-flow estimates from petroleum Salt Lake coal area, western New Mexico, bv bottom-hole temperature quadrangle,and GM-58, Geologyof the Gym Peak data in the Colorado D. W. Love, J. Hawley, and S. Palmer,7984, n Plateau and the eastern Basin quadrangle.A comprehensive geologic report, and Range Prov- pp.,2tables,4figs. $6.00 ince, by R. E. Eggleston Geologyof theFlorida Mountains, Luna Counfu, Nan and M. A. Reiter, 1984: Geological Society of America, Bulletin, v. 95, Mexico,wlll be published as Memoir 43 lat-erthis USGS year. pp.1.027-1034. Volcaniclandforms and ore deposits, bv R. H. Sil- +84-563-Thermal studies at the Brantley damsite USGS litoe and H. F. Bonham, Jr., 798aiEconomic on the PecosRiver near Carlsbad, New Mexico, Geology,v.79, no 6, pp.1286-1298. J. H. Sass,7984,25 pp. Bur-lrrtNs l53tl-Geochemical halos in the Silver City mining usGs region and adjacent areas, Grant County, New Mexico,by K. C. Watts,J. R. Hassemer,and D. TopocnRpHrc MAIs-NEW (scale 1:24,000) F. Siems, 1984,85 pp. contour l537-A-Subdivisions of the Menefee Formation yt lat. long. (f0 (NM-Mex.) and Cliff House Sandstone (Upper Cretaceous) Cabin Wells 1977-83 31'30', 108"7'30' 20 in southwestSan Basin,New Mexico, by Campbell Well 7977-83 3L"22'30', 708"7'30', 20 Juan (NM-CO) R. L. Miller, 1984,pp. A29-A53. Canal Creek 1978-83 36"52',30', 108%5', 20 10 l558-B-Titanium mineral resourcesof the United Chimney Rock 7978-83 36"45', 108"30', 20 (NM-Mex.) States--definitions and documentation, bv E. R. Comer Well 1977-83 31'15', L08'7',30', 20 Forceand L. E. Lynd, L9M, pp. B1-B11.' Dog Mountains (NM-Mex.) 1977-83 31'15', 108'15', 20 Double Wells (NM-Mex.) 1977-83 3L"37',30', 708"7',30', 20 Crnculnn EagleMountain (NM-Mex.) 1977-83 31'15', 708"22',30', 40 Garton Lake 7975-82 32"45', 706"7',30', 89GD-Earthquakes in the United States, Octo- 10 Guadalupe(NM-Mex.) 7977-83 31"15', 108'52',30', ber-December 1982, by C. W. Stover, H. 10 J Horse Mesa (NM-AZ) 1978-82 36"37',30', 109' Minsch, F. W Baldwin, and L. R. Brewer, 1984, 20 10 33 pp' Lake Lucero SE 1975-82 32"30', 106'15', 10 Lang Canyon (NM-Mex.) 1977-83 31"15', 108'45', 10 MlscrllaNrous FIELDsruDIES MAps Rattlesnake 1978-83 36'45' 108'45', 20 10 Rocky Point 1978-83 36"45', 108'52',30', 20 MF-1634-A-Mineral resource potential map of Shiprock 1978-83 36"45' 108"37',30', 20 10 the Ryan Hill roadless area, Socorro County, New Summerford Mountain r974-82 32"30' 106"45', 10 Mexico, by C. H. Maxwell, A. V. Heyl, C. E. Tres Hermanos SE 1975-82 32'30' 106' 10 Ellis, and D. C. Scott, 1984,lat. 33'52'30,,to Tres Hermanos SW 1975-82 32"30', 106'7'30' 10 34"07'30',long.102 to10775' , scale1:50,000, 7 Tucson Spring 7975-82 33"22'30', 106"52',30', t0 pp. text. Whitewater Creek (NM-Mex.) 1977-83 31'15', 108"37',30', 20 MF-1689-Stratigraphic framework structure and Whitewater Mountains (NM-Mex.) 1977-83 31'15', 108'30', 20 general geology of the Salt Lake coal field, Ci- bola and Catron Counties, New Mexico, bv M. Irurtnuronrr ropocRApHrcMAps (scale 1:100,000) W. Mclellan, L. R. Biewick,and E. R. Landes, contour yr (m) 1,9M, lat. 34' 30' to 34"45', long. 108"37'30"to lat. long. 108'52'30",scale 1:24,000. Alamo Hueco Mountains 1983-83 31' 108' 50 Conchas Lake (BLM) 7978-82 35' 704" 20 PnorpssroNal pApER Hatch (BLM) r978-82 32"30' 707 50 r978-83 34" 108" l28l-Palynological evaluation of Cedar Moun- Quemado 50 SantaFe 1982-83 tain and Burro Canyon Formations, Colorado 35'30', 105" 50 Villanueva 1980-83 35' 105" 50 llaleag, by R. H. Tschudy, B. D. Tschudy, and L. C. Craig, 79M,42pp. Rpvrsro ropocRApHrcMAps (scALE 1:250,000) contout Otherpublications yt lat. long. (m) Albuquerque 1978-83 35' 106" Salina-margin tepees, pisoliths, and aragonite ce- 50 SantaFe l9g-83 ments, Lake Macleod, western Australia-their 35' 104' 200 100

February 1985 New Metico Geology NUREgeochemical reconnaissance mapsof NewMexico in detecting favorable areas for copper, lead, zinc, nickel, cobalt, chromium, vanadium, As part of the National Uranium Resource location, a chart of concentration increments manganese, iron, and silver(?) mineraliza- Evaluation (NURE), approximately 21,000 and equivalent symbols, a graph of cumu- tion; also molvbdenum can be detected in stream-sedimentsamples and 13,000ground- lative probability and standard deviation from southern New-Mexico. Unfortunately, gold, water sampleswere collectedin New Mexico the median, a percent frequency bar graph, tin, tungsten, and niobium maps are of rel- for uranium and multi-elementchemical and a summary of basic statistics. atively little value because NURE sampling analysis.At the requestof the New Mexico Increment schemes for the geochemical technioues and analvtical methods were op- Bureauof Mines and Mineral Resources maps (specified by NMBMMR) are intended, timized for uranium.-Cuidelinest'or using NURE (NMBMMR), the U.S. Departmentof Energy as much as possible, to allow maximum res- Reochemicalreconnaissance maps of New Mexico contracted Bendix Field Engineering Cor- olution of geologically significant geochem- iNNaeN4vn Open-file Report 218) is in- porationto producecomputer plots of NURE ical pattems and to permit recognition of both cluded with map orders or may be purchased geochemicalreconnaissance maps for each obvious and subtle geochemical anomalies before any maps are ordered. of the 1" x 2oquadrangles that cover New that may indicate favorable areas for mineral Blueline prints of NURE geochemical maps Mexico-a total of 1,220 maps that present exploration. When employed collectively (i.e., can be purchased from the NMBMMR In- more than 1,000,000bits of data (Fig. 1). all the geochemical data is interpreted) and formation, Resource, and Service Center for Eachgeochemical reconnaissance map in- integrated with geological and geophysical $3.00 per map. To order, photocopy Fig. 1; cludes the following information: quadran- data, the NURE geochemical maps can be an circle which quadrangle and element sym- gle name, element or other parameterplotted important tool in mineral exploration or for bol(s) you want to purchase. (Use a different on map (e.g., pH), sample medium (stream mineral-resource assessment. These geo- photocopy for each quadrangle ordered.) Be sedimentor ground water), analyticallabo- chemical maps also can lead to new insights sure to distinguish the appropriate sample ratory (LosAlamos or Oak Ridge),a 1:250,000- in regional leologic, stratigraphic, hyd'rol- medium (stream sediment or ground water). scalemap with distinctive svmbols (maxi- ogic, and environmental studies. For each quadrangle there is also a set of mum of 15;that indicate the intrementalcon- In addition to detecting uranium prov- sample-location maps that can be purchased centration of the element at each sample inces, NURE geochemical maps canbe useful for $3.00/map. -RichardChamberlin and VirginiaMcLemore

B,Mo.P, Y, Zr \SN}NS Rofon WH !)el)')s)zbN\\ GJEX-r38(78), X-143l8o)'/ lzl (e1){\\\\3 358(8r) 3 NewMerico Geological Societynews 4ttiGJBX.2I( The spring meeting of the New Mexico 35t(8t) GeologicalSociety will be held on Friday, Aprrl26, 1985,in the Macey Center, New Mexico Tech, Socorro, from 9 to 5. The intl annual businessmeeting will be held that "//A day from 1 to 2 p.m Symposiaor technical \- \\.\ \\\ o) 2r(77)..\\ sessionsthat cover many aspectsof New .2 Mexico geology are planned for a morning and aftemoon session.A cocktailparty and banquet will follow the day's activities. N{qr{q\t Information on registration/ accommo- BX-lo4(78),2t5(8t dation, and other activities planned for this meeting will be mailed to NMGS members this month. Inquiries should be directedto: G. S. Austin, GeneralChair- man, NMBMMR, Campus Station, So- corro, NM 87801;(505) 835-5125. \\\\.\ J8X-415 (8r)\\\ 1985l{ew Mexico Geological NSNN Mopscommonio oll quodronqles: Streomsediments- Ag,Al, Bo, 8e, Co,Ce,Co,Cr, Cu, Fe, Hf , Societylield conference K,Lo,Li ,Mg, Mn, No, Nb, N i, pb,Sc,Sr,Th,Ti ,U, V, Zn,K/No, i*ii;ii,.b,\ Mg/Co,Al/M9,Zn /Cu,U/ rh The 1985New Mexico Geological Soci- ilo. fall field conferencewill be held Sep- ro8. Ground woters- U,pH, conduchylly (Cf) ety Additionol tember 26-28 in east-cenhalNew Mexico mopsnol Additionolmops represenledby pollerns (Santa Rosa-TucumcariCountry). Em- Streomsediments - ore listedwithin individuol Au,Bi,Cd,Ct,Cs,Lu,Rb,Sb,Sn,W phasis will be on the stratigraphy, sedi- quodrongles. mentology,and paleontology of Mesozoic rocks and the Ogallala Formation and on Romonlellers: slreom- sedimentdoto mops Slreomsedimenls- B,Mo,P,Y,Zr the oi-I,gas, and uranium resourcesof up- llolic lelters:ground- Groun d wole rs - Ag, Al, 8, 8o, Co,Ce,Co, Cr, Cu,Fe,K, Li, Mg, per Paleozoic-Mesozoicrocks. Contrib- woter doto mops Mn, Mo,No, Nb, Ni, P,Sc,Si,Sr,Th,Tr,V, y, Zn, Zr uted paperson this areafor the guidebook are welcome.For more information con- FIGURE l-Index map for NURE geochemical reconnaissance maps of New Mexico. The "GJBX" number tact the conference organizer: S. Lucas, is,the reference to the bpen-file Re-port(s)that conta in(s) the original, tabula ted data for eactr quadra ngle. Departmentof Geology,University of New These are available for examination at NMBMMR. The number in the lower right corner of eich Mexico, Albuquerque, NM 87131;tele- quadrangle represents the laboratory or laboratories responsible for collecting and lnalyzing the sam- phone: 5051277-1646. ples: 1, Los Alamos National Laboratory; 2, Oak Ridge Gaseous Diffusion Pllnt; 3, both 1 and 2.

Nm MexicoGeology February 1985 77 phenomenal near-surface oxidized silver ores in crystals consist of a core of transparent or violet- Abstracts ihe past. The area was extremely active in Tertiary tinged cancrinite (about 0.15 mm in diameter) that tirne, fypified by an early period of major north- is surrounded by a layer of gray, inclusion-filled New Mexico Mineral Symposium south faulting, followed by intrusion and extru- natrolite about 0.10 mm thick and covered by an sion of shallow, intermediate to acidic, porphyritic outer layer of colorless, subhedral analcime about The purpose of the New Mexico Mineral Sym- rocks. Finally, there was regional silicification and 0.02 mm thick. The cancrinite family is a group of posium is to bring together for an exchange ol minor fracturing followed by ore emplacement. hexagonal alkali aluminosilicate minerals, with the ideas both professionals and amateurs interested Mineralization on Carbonate Creek is of a tvoe that fonnula (Na,Ca,K)sr(Si,Al)u in mineralogy. The 4th symposium was held No- Beneral r4[(SO4),(CO3), is apparently unique in the area. Argentit'e'(acan- (Cl,OH)rl, which differ according to the vember 12-13, 7983, at the New Mexico Institute n.nH'O, thite) float, reportedly in masses up to 200 lbs, cations present (Na or Ca), anions pres- of Mining and Technology, Socorro, New Mexico. dominant was found in Silver Gulch in the early 1880's. A1- (CO3, Cl, or OH), and details of the Following are abstracts from talks given at the ent SO4, crystal though meerrnS. 80,000 ounces were producei from float lattice (space group and number of atoms per unit alone, extensive development failed to reveal the cell). Point of Rocks cancrinite appears to belong source of the large masses. The source area of the to the soecies cancrinite sensu stlictu. The formula SoNts \.trNERAL LocALrrtES rN THE BLACK RaNcr argentite is in highly altered limestones adjacent inferred from microprobe analysis is near AND VICINITY/ SOUTH-CENTRALNEW MEXICO, to an andesite body, which also is altered in places. NasALSLOT(COJog(SOJo.; it corresponds to 29- by A. V. Heyl, U.S. GeologicalSurvey, Work by the authors using geochemical and other 33 mole percent of the sulfatian end-member, vish- Denver, CO 80225 methods has revealed the presence of argentite nevite. The cancrinite is uniaxial (-) with e : unevenly distributed within a "replacement" de- 7.494and o: 1.500. Many well known mines and mineral localities posit in several members of the Lake Valley lime- are in the general region of the Black Range west stone. This bed consists almost entirelv of fine- of Truth or Consequences, New Mexico, and the Or nRroar CHAMBERS/ JEWELRv sHops, AND grained silica and varying amounts of irgentite, nearby bedrock areas. The best known locality is CRYSTAL CAVERNS-A GLIMPSE AT NEW almost to the exclusion of other minerals. Minor lron Mountain, on the west side of the Black Range, MExTco,s MINING CAMPS, CHARACTERS. AND native gold with high silver content fills cavities where Richard has reported the occurrei-ce THEIR MINERAL TREASURES, bv R. W. Eve- Jahns and seems to be the last mineral deposited. The of nearly 200 minerals including helvite, danalite, Mexico Bureau deposit is interesting because it appears to be the leth, New of Mines and fluorescent fluorite, hypogene ;illemite, and mol- top of an epithermal system. Mineral Resources,Socorro, NM 87801 ybdenian scheelite. About 20 mi to the northwest Mineral collectors today, whether we be miner, (on top of the range) is Nugget Gulch, one of the prospector, engineet geologist, or just plain en- best localities for 0.5-5.0 cm diameter. banded. MINnnars oF PorNT oF RocKS-NEw FINDTNGS, thusiast, are actively involved in preserving a small brown nuggets of cassiterite in the form of red, by R. S. DeMark, Albuquerque, NM part of our natural history whether we realize it yellow, and brown wood tin. Some make beautiful The mineralsfrom Point of Rocksmesa (T. 26 or not. Although collecting has obviously taken gems when tumbled and polished. North of NM- N., R. 26 E.) in eastern Colfax County, New Mex- the back seat to the quest for ore, few who have 52, 7 mi into the Black Range, a wood-gathering ico, were first discussed at the 3rd annual New been involved with minerals in one endeavor or road leads northeast into Sheep Canvon where a Mexico Minerals Symposium in November, 1982. another have not been moved to gather a cabinet large wall-forming gold-quartz vein contains some New discoveries at Point of Rocks mesa in the of nature's treasures.Just how long has this phe- beautiful, coarse amethvst that is suitable for slab- intervening months have enhanced further the nomena been going on? Perhaps since the first bing. Up Turkey Cree( and then left up Buster significance of this unique New Mexico mineral human bent to pick up a sky-blue or dense red Creek a jeep road leads to the Black Range front. location. The uncommon species found at Point stone and wondered where it came from. Here in The south fork at the front, if followed one-fourth of Rocks: villiaumite, serand-ite,acmite, searlesite, the area we currently call New Mexico, diligent mi, will lead to an area along the creek in andesite neptunite, and polylithionite were discussed pre- research would undoubtedly reveal that the Span- with many amygdaloidal ,r"ugsas much as 5 cm viously. Since then, the exceedingly rare sulfide ish collected copper minerals from the Santa Rita across, which contain stilbite and heulandite crys- mineral rasvumite and the more orosaic sulfide del Cobre some 200 years ago. And documentary tals, some of which are very beautiful. West of minerals, galena, spalerite and pyrrhotite have been evidence currently on hand can take the readeri Chloride, up Chloride Cree( about 2 mi, a well found. Eudialyte, cancrinite, and natrolite also have listener on an armchair journey spanning nearly maintained cliff road rises to the south. Over the been identified as occurring in relative abundance. 150 vears to places with exotic names like Santo crest the dumps of the U.S. Treasury mine can be Additionally, the first New Mexico occurrence of Domingo de iis Calzadas, Mount Chalchiutl, and seen and driven to with a four-wheel-drive ve- the mineral lorenzenite has been established. These Pinos Altos as well as the others mentioned above. hicle. At the northwest end of the dump, across minerals, plus additional unknown species, por- The journey exposes us to both heroes and villains from the old powder house, small flecki of gold tend that Point of Rocks mesa will soon rank as of the past and reveals a brief glimpse into their can be collected in dark bands of copper and si-lver one of the most prolific New Mexico locations for daily lives. minerals in quartz. Twelve mi to ihe west, up mineral species. Chloride Creek and near its.source, is the Silver oF THE HeNsoNnunc Monument mine, where the dumps contain beau- CorlecrtNc HISToRy rrat- Dere ow vuc MTNERALS tiful, massive bornite, freibergite, ind (seen under FRoM PorNT oF RocKS, MNG DrSTRrCr, BlaNCneno CLATMS, by leny the microscope) native silvei. South of the high- NEw Mpxco: LoRENZENITE, sEARLESTTE,AND Ostrom, Enchanted Mesa Minerals, Belen, way to Hillsboro and 2.5 mi east of the town is a CANCRINITE/ by P. I. Modreski, U.S. Geo- NM passable road down Ready Pay Gulch to the east logical Survey, Denver, CO 80225 Since 1881, there has been interest in the mineral end of the Percha Creek Box. Here, old vanadium Lorenzenite, searlesite, and cancrinite are three possibilities of the Oscura Mountains, which are mines have good yellow-buff crystals of type{o- of the uncommon minerals that occur as euhedral located about 10 mi south of Socorro and about 35 cality endlichite, orange vanadiniie, wulfeniie, and crystals in the phonolite sill that forms Point of mi east of San Antonio. The Blanchard mine is descloizite. The Machb district lies 8 mi southwest Rocks mesa, Colfax County, New Mexico. These located about 9 mi south of Bingham, New Mexico, of Lake Valley, 13 mi northwest of Nutt, and about minerals are contained in laie-stage gas cavities up and it is this location that is of particular interest. 0.5 mi west of the Wallace ranch on the north side to several cm in size, which are lined with pro- The presentation was divided lnto three parts: a of Macho Creek. The main dumps have silverlead iecting crystals mainly of alkali feldspar, acmite, brief history of what has been written about the sulfides and sphalerite, but the older dumps across and nepheline. The lorenzenite is a niobium-bear- territory; a few anecdotes about collecting at the the draw to the northeast have good smail crystal ing variety, Nar(Ti,Nb)rSirOr; it forms brown, site; and some slides about how the site looked in crusts of endlichite, vanadinite, wulfenite, desclo- transparent prisms less than 1 mm long. Loren- the past, how it looks at the present time and some izite, smithsonite, anglesite, hemimorphite, su- zenite was known previously from several alkalic pictures of minerals from the location. pergene willemite, and, possibly, coronadite. massifs in the U.S.S.R., Norway, Narsarsuk, Greenland, and Mont St. Hilaire, Quebec. Sear- Mwgnalocy oF THE cARBoNATTTES AND BARITE- EptrunRuel lesite, a borosilicate, NaBSLOT(OH)2, forms STLVER MINEnALTzATIoN IN THE col- FLUORITE_SULFIDE VEINS IN THE EASTERN orless prismatic to CannoNarl CRnsr anra, KncsroN, Nrw bladed ffystals as much as 2 Lrvnan MouNrarNs, Soconno CouNry, Mrxlco, by V. M. Canby and R. L. Evatt, cm long. It is previously known only from boron- containing NEw Mrxrco, by Y. T. Mclemore and R. New Mexico Institute of Mining and Tech- evaporite beds in California, Nevada, Wyoming, and the U.S.S.R. M. North, New Mexico Bureau of Mines nology, Socorro, NM Cancrinite occurs in 87801 alkalic, silica-poor igneous rocks, often with and Mineral Resources,Socorro, NM 87801 The Kingston district has been historically a pro- nepheline and sodalite. At Point of Rocks, it forms Paleozoic carbonatites (minimum age M9 m.y. ducer of base and precious metals, and its en- rylindrical or tapering hexagonal prisms as much + 16 m.y.) intrude the Precambrian rocks exposed riched lead-zinc-silver deposits have produced as 2 cm long and 0.5-1.0 mm thick. Some of these in the eastem Lemitar Mountains, Socorro Countv.

18 February 1985 New Mexico Geology Carbonatites are unique carbonate-rich rocks of Ar dating, in progress on a previously unmapped, pressive array of more than 200 distinct species, apparent magmatic origin, and they are charac- fresh, unsheared intrusive body of basalt in the including six new ones were produced. This talk terized by a distinct but variable mineralogy, RH, revealedan ageof 848 + 42m.y., which helps was a broad overview of the history, geology, and chemistrv, and associated alteration. The Lemitar to constrain further the structural deformational more notable speciesthat, combined, have made carbonatites occur as dikes, stockworks, and veins, history of the RH-PH Precambrian terrane. the name Bisbeesynonymous with fine minerals. and they display textures, mineralogy, chemistry and wall-rock alteration tvpical of carbonatite com- Norrs oN UNUSUALMINERALS FRoM THEHAR- Azunrrrs FRoM THE HaNovEn No. 2 rrrtNn, plexes. They contain greater than 50% carbonate DING PEGMATI-IE,by Paul Hlava, Sandia GnaNr CouNrv, Nrw Mrxrco, by R. W. minerals and varying amounts of apatite, mag- Laboratories, Albuquerque, NM Graeme, IV and D. L. Graeme, Hanover, netite, pyroxene, and other accessory minerals. Most people who at the Harding peg- NM 88041 Despite variations in texture of the Lemitar car- collect matite are familiar with the common minerals and bonatites, they can be grouped on the basis of The Hanover No. 2 mine in Fierro, Grant County, the major ore minerals of the mine. Mixed in with mineralogy and mode of emplacement as: 1) sili New Mexico, lately has been the sourceof a great these are small, rare grains of more unusual min- cocarbonatite dikes; 2) sovite (greater than 90% many small, but fine, azurite rosettes.This azurite erals, such as the bismuth minerals, that most col- calcite), ravhaugite (greater than 907o dolomite), occurrenceis very similar in geologicenvironment lectors miss or do not recognize. Minerals. and and carbonatite veins; 3) ankerite-dolomite car- to other localities that have produced similar spec- some features of their chemistrv. discussed are bonatite dikes; and 4) stockwork carbonatites. Bar- imens- Unfortunately, little has been done to doc- nativebismuth, bismuthinite,bismutite, bayerite, ite-fluorite-sulfide veins occur in the vicinitv of ument the features that allow the development of spessartine, zircon, thorite, and bertrandite and the carbonatite dikes and locally occur with some this form. The purpose of this discussiohwas to pucherite and mottramite, which are new records carbonatites. The primarv mineralization of the fill this longstanding void. ior the Harding pegmatite. veins is barite, fluoiite, gaiena. sphalerite, quartz, and small amounts of chalcopyrite, pyrite, and ColrrcrloN oF sMALL MTNERALSrECIMENS, by calcite- Many of the veins contain silver. Subse- AN ovnRvtEw oF THE MTNERALoGyor Brsapn, Les Cubit, Socorro, NM 87801 quent alteration has produced wulfenite, hemi- AmzoNa, by Richard Graeme, Sharon Steel This talk was a general discussion about col- morphite, cerussite, hematite, and a small amount Corporation, Hanover, NM 88041 lecting different sized specimens,advantages and of malachite, chrysocolla, and anglesite. Barite- Bisbee,Arizona, is truly the classicNorth Amer- disadvantages of each with emphasis on small fluorite-galena mineralization is common in cen- ican mineral locality. During the near century of specimens,and idiosl'ncrasiesof collectorsand how tral New Mexico and is considered to be Tertiary its operation, literally hundreds of thousands of those idiosyncrasies-affecttheir collections. Slides in age. This mineralization is probably formed by fine specimenswere produced and preserved. From of some of the world's most exotic small minerals the expulsion of basinal brines along fractures re- a relatively simple geologic environment, an im- that occur in the southwest U.S. were shown. lated to the Rio Crande rift. Howe-ver, it is possible, that some of the barite mineralization in the Lemitar Mountains is related to the carbonatites and is of Paleozoic age. The presence of carbon- Greene of the State Park and RecreationDivision atites in the Lemitar Mountains also may have Stallnotes plan the scientific display at the Elephant Butte tectonic significance. Carbonatites are commonly (continued from page20) State Park headquarters. associated with continental rifts or lineaments and that the Arco No. 1 Fitzpatrick petroleum test will The New Mexico Coal SurfaceMining Commis- the carbonatites in Socorro County support cur- be drilledin southwesternHidilgo Countyin the sion, chairedby Frank Kottlowski, upheld Director rent theories of rifting occurring as early as the PedregosaBasin area. Ed Kelley's (Mining and Minerais Division, Precambrian or Paleozoic. Other carbonatites and A resolution approved at the New Mexico Min- NMEMD) decisionto canceltheArroyo No. l Mine alkalic rocks in New Mexico and Colorado are sim- ingAssociation'sannual meeting praised and sup- permit; Frank is serving on the Office of Technol- ilar in composition and age to the Lemitar carbon- ported NMBMMR's efforts. The September oqy AssessmentAdvisory Panel, which reviews atites, which further supports Precambrian or early of AmericaButletin contained an tjihnoloeies for surfacemine reclamationon Paleozoic rifting. CeotogicalSociety article by Roberta Eggleston and Marshall Reiter western federal lands. entitled Terrestrial heat-flozu estimates petroleum- The SME-AIME meeting is planned for October oF THE RATTLESNAKE AND from PnEcaunruaN RocKS holetemperature data in the ColoradoPlateau and the 1985in Albuquerque; GeorgeAustin and Jim Bar- ProsnNel Hrr-r-s, TonnaNCE CouNTy, NEw easternBasin and RsngeProaince. Deborah Shaw ker are on the Program Committee; Mike Harris Mrxrco, by J. R. D, Setter,KRITI Explo- represented NMBMMR at the Governor's Career will lead a field trip to the Ortiz gold mine, Jim ration, Inc., Houston, TX77024 Development Conferencefor Women. Garv Iohn- Barker will lead a field triP to the Jemezarea, and Fabric mapping, petrographic and geochemical p""t girr" a talk at the Association of Engineering GeorgeAustin will lead a field trip to the Grants studies in the RattlesnakeHills (RH) and Pedernai Geologistson "Coalmine subsidencein New Mex- uranium district. I-ynn Brandvold, NMBMMR's Hills (PH) have shown that two different tectono- 1CO. representativeon the Water Quality Control Com- stratigraphicassernblages may be present. The RH At the New Mexico Mineral Svmposium, held mission,reports that WQCC is woiking on Proiect composean area of scatteredexposure (approxi- in Socorroin November, Bob Nbrth and Cinger LUSI Leaking Underground StorageTanks. mateiy 50 km'?) of medium-grade quartzo-feld- Mcl-emore gave a talk on "Geology and mineral- John Hawley was NMBMMR s representativeat spathic augen gneissesand subordinate mylonite ogy of EI Cuervo Butte barite-fluorite-galena de- the Governor's Conference on the Environmen! gneisses, which are consistently foiiated south- posits in Santa Fe County," and Bob North gave Gary Johnpeer, John Hawley, Dave Love, and southeastwith moderate to steepdips. Small, sub- a talk on "Geology and mineralogy of Bear Moun- GeorgeAustin attended the meetings of the Haz- vertical aplite veins trend south-southeast alons tains mining district in SocorroCounfy."Judy Vaiza, ardousWaste Management Society,and Jim Barker with the axialplanes of en echelon,ptvgmatic quartZ Zana Wolf, Norma Meeks, Vicki Pollmann, and representedus at the meeting of the Landsman veins. Originally mapped by Kelley (1972)as schists Carol Hjellming helped Bob North set uP the sym- Association. and granite gneisses, the RH appear to be litho- posium; New Mexico Tech President, Larry Latt' The latest oil and gas production figures for Au- logically distinct from the PH. Quartz-muscovite- man, gave the banquet address. The Southwest gust 1.984were given to Bob Bieberman by Dick staurolite and quartz-muscovite-kyanite schists, AAPG section will meet in the Ruidoso area in Stamets(who replacedJoe Ramey as Director of alkali granites, amphibolites, and quartzites, which 1.986;preliminary plans for a field trip to see the the Oil Conservation Division). They showed con- are foliated parallel to layering east-northeast (ap- CretaCeousrocks and coal deposits of that area, tinuing increasein production of crude oil and a proximately 300 km'?),form the PH. Also, the mi- under the direction of Art Bowsher,field trip chair- spring:through-summerincrease in production of nor hematite-malachite-chalcopl'rite mineralization, man, are being made by JoAnne Osburn, Brian natural qas in New Mexico. characteristicof portions of the PH, was not found Arkell, Orin Anderson, and Bill Cobban. BobEieleth and Diane Murray have transmitted in the RH. However, the RH are assumedcontem- Bob Weberattended the Mogollon confeiencein the final report on the CRIB project to USGS. poraneous with the 1..4b.y. age assigned to the Las Cruces.Dave Love was NMBMMR's (and New Gretchen Roybal and Brian Arkell located and metamorphic rocks of the PH (Mukhopadhyay et Mexico's) representative at the Western States deared drilling locations for the Coal Quality study al., 7975).Additional tectonic analysis of Precam- Seismic Policy Council in Sacramento;he is also in the Sanfuan Basin. Mickey Wooldridge worked brian strucfures shows the presence of shallow on the steering committee of the New Mexico with GeorgeAustin and IiriZidek in planning co- (15-20), easterlythrust in the northern portion of Mapping Advisory Committee. Don Wolberg is a operativeproiects with U.S. Bureauof Mines on the PH. The kinematics of this event currently are nominee for secretaryof the PaleontologicSociety; mineral fotential of federal lands. Sales of highly speculative, although field evidence sug- he is also vice-chairman of the Society of Verte- NMBMMR and NMGS publications are above gests that these shallow thrusts postdate the high brate Paleontologists'Government Liaison Com- budget; the sales are handled by Norma Meeks angle, north-trending thrusts of Laramide age. K- mittee. Don and Rick Lozinsky are helping Peter and overseenby Lois Devlin. tr

New Mexico Geology February 7985 are in the planning stageby Ginger Mclemore and NewMexico Bureau of Mines GeorgeAustin. BiIl Stone's talk at the Hydrology seminar was on "Estimating ground water re- andMineral Resources charge from chloride in the unsaturated,zone." The New Mexico Geological Society field trip statfnotes near Taos, the AIME meeting in Denver, and the GSA meeting in Reno were attended by numerous Bureau staff members. Norma Meeks and Orin Irean Rae joined the staff as a Drafter; Nanette written by Dana Adkins-Heljeson and Candace Anderson made publications available at the NMGS Dynan resigned as Secretary/Receptionistfor the Holts, with very considerable aid by Jane Love. meeting. Iim Birker coordinated and chaired a Information, Resource,and ServiceCenter and was Dck Chamberlin led a field trip into the Lemitar borite symposium at the AIME meeting. At the replaced by Marie Chavez; Danny Bobrow was Mountains to show petroleum geologiststhe char- GSA meeting, John Hawley presented a poster hired as Paleontologic Curator. Jicques Renault acteristic faults of that range. RousseauFlower's entitled "Identification of possible sites in New had served20 yearsin Septemberand-Lynn Brand- report, Nan speciesand structuresin Narthecocerati- Mexico for disposal of ha2ardous waste"; Dick years vold 19 in November. dae(Nautiloidea, Orthocerida), was published in the Chamberlin and Bob Osburn's poster was entitled A repbrt on the mineral potential of Torrance July issue of PaliiontologischeZeitschrift. "Character and evolution of extensional domains County was prepared for BLM by Ginger Mc- John Hawley gave a talk to the Colorado Geo- in the Socorro area of the Rio Grande rift." famie Lemore with cooperation from Dick Cha;berlin, logical Society in Golden entitled "Late Neogene Robertson met with the SEG Council conceming George Austin, JoAnne Osbum, Gary Johnpeer, history of southern New Mexico." Rick Lozinsky the short-coursevolumes. Ron Broadhead, Bob North, Kathy Campbe[, linda spoke about the Late Cretaceousdinosaurs in the Jane Love and Deborah Shaw wrote a paper Wells-McCowan, JamesBrannan, Deborah Shaw, McRae Formation at the Northern Arizona Sym- entitled Media-conaersionseraices anil yoducts. This Lynne McNeil, and Lisa Zangara. Mineral poten- posium in Flagstaff, a paper he had co-written with paper, on guidelines to make computer systems tial of the general Sandoval-Bernalillo Counties Adrian Hunt, Don Wolberg, and Spencer Lucas. compatible for manuscript processing, was pre- area for BLM was in final draft, prepared by the The August 1984Geological Society ot' America Bul- sented at the Association of Earth ScienceEditors sam€cooperators with additional aid by Gretchen letln included John Hawley's comments on receiv- meeting. Bill Stone's Open-file Report 2L3, which Roybal,Sam Thompson, Lynn Brandvold,and Dave ing the Kirk Brian award with L. H. GiIe and R. describesthe ground-water rechargeat the Navajo Menzie. B. Grossman. mine, is available; Bill's conclusions were pre- Osburn's JoAnne Geologic Map 55, which de- foAnne Osburn gavea talk on the CrevasseCan- sented to OSM in Denver. John Hawley and Dave scribesthe geology of the Pueblo Vielo Mesa quad- yon Formation of the Datil Mountains coal field Love visited the Deming area to examine the earth rangle in Socorro and Cibola Counties,-was area at the SEPM meeting in San fose. Numerous crackscaused by withdrawal of ground water. Bureau personnel aided at the State Fair exhibit, Frank Kottlowski will receive an Honorary including Bob North, Diane Murray, Carol Hjell- Membership in AAPG at the March national meei- ming, JaneLove, Dave Love, Gary Johnpeer, Ka- thy Campbell, Jim Barker, Bob Eveleth, Dave Menzie, Ron Broadhead, and Orin Anderson. Pricelist 18, Open-file List 3, and announcement cards 41., 42, and 43 were prepared by Carol Hjellming. Open-file Report 214, by Bill Stone, is entitled Rechargein the SaItLake coal t'ield based on chloridein Ron Broadhead talked at the IOCC meeting in theunsaturated zoze. Bob Eveleth's talk at the Sigma SantaFe on "Peholeum exploration targetsin New Xi annual meeting was "Socorro, the mining cen- Mexico" and PaigeChristiansen describedthe his- ter of the southwest."Mike Harris worked on leach tory of petroleum exploration in the state. Bob testsof gold ore from Lincoln County. Bob Eveleth North visited the Newberry Library to obtain min- picked up the Howard Rothrock collection of books ing reports for the Information, Resource,and Ser- from Howard's relatives in Silver City. vice Center. Sam Thompson has been informed Mineral-potential reports for the BLM on Ci- bola, Valencia,McKinley, and San Juan Counties (mntinueilon page19)

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