Mineral Resources of Oregon
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Geology and Hydrothermal Alteration of the Duobuza Goldrich Porphyry
doi: 10.1111/j.1751-3928.2011.00182.x Resource Geology Vol. 62, No. 1: 99–118 Thematic Articlerge_182 99..118 Geology and Hydrothermal Alteration of the Duobuza Gold-Rich Porphyry Copper District in the Bangongco Metallogenetic Belt, Northwestern Tibet Guangming Li,1 Jinxiang Li,1 Kezhang Qin,1 Ji Duo,2 Tianping Zhang,3 Bo Xiao1 and Junxing Zhao1 1Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, CAS, Beijing, 2Tibet Bureau of Geology and Exploration, Lhasa, Tibet and 3No. 5 Geological Party, Tibet Bureau of Geology and Exploration, Golmu, China Abstract The Duobuza gold-rich porphyry copper district is located in the Bangongco metallogenetic belt in the Bangongco-Nujiang suture zone south of the Qiangtang terrane. Two main gold-rich porphyry copper deposits (Duobuza and Bolong) and an occurrence (135 Line) were discovered in the district. The porphyry-type mineralization is associated with three Early Cretaceous ore-bearing granodiorite porphyries at Duobuza, 135 Line and Bolong, and is hosted by volcanic and sedimentary rocks of the Middle Jurassic Yanshiping Formation and intermediate-acidic volcanic rocks of the Early Cretaceous Meiriqie Group. Simultaneous emplacement and isometric distribution of three ore-forming porphyries is explained as multi-centered mineralization generated from the same magma chamber. Intense hydrothermal alteration occurs in the porphyries and at the contact zone with wall rocks. Four main hypogene alteration zones are distinguished at Duobuza. Early-stage alteration is dominated by potassic alteration with extensive secondary biotite, K-feldspar and magnetite. The alteration zone includes dense magnetite and quartz-magnetite veinlets, in which Cu-Fe-bearing sulfides are present. -
Burnt River Water Temperature Study Commitee Final Report
BURNT RIVER WATER TEMPERATURE STUDY STEERING COMMITTEE FINAL REPORT Prepared for the Burnt River Steering Committee by David Duncan and Associates Boise, Idaho April 2002 TABLE OF CONTENTS INTRODUCTION ............................................................................................................................ 1 Study Description ...................................................................................................................... 1 Study Area ................................................................................................................................. 1 OBJECTIVE 1: FACTORS CONTRIBUTING TO STREAM TEMPERATURES ...................... 2 Baseline Temperatures............................................................................................................... 2 Upper Watersheds .............................................................................................................. 2 Lower Watersheds .............................................................................................................. 2 How Does Heat Energy Enter and Leave a Stream? ................................................................. 3 Radiation.................................................................................................................................... 5 Atmospheric Radiation....................................................................................................... 7 Radiation from Riparian Vegetation and Topographic Features....................................... -
Washington State Minerals Checklist
Division of Geology and Earth Resources MS 47007; Olympia, WA 98504-7007 Washington State 360-902-1450; 360-902-1785 fax E-mail: [email protected] Website: http://www.dnr.wa.gov/geology Minerals Checklist Note: Mineral names in parentheses are the preferred species names. Compiled by Raymond Lasmanis o Acanthite o Arsenopalladinite o Bustamite o Clinohumite o Enstatite o Harmotome o Actinolite o Arsenopyrite o Bytownite o Clinoptilolite o Epidesmine (Stilbite) o Hastingsite o Adularia o Arsenosulvanite (Plagioclase) o Clinozoisite o Epidote o Hausmannite (Orthoclase) o Arsenpolybasite o Cairngorm (Quartz) o Cobaltite o Epistilbite o Hedenbergite o Aegirine o Astrophyllite o Calamine o Cochromite o Epsomite o Hedleyite o Aenigmatite o Atacamite (Hemimorphite) o Coffinite o Erionite o Hematite o Aeschynite o Atokite o Calaverite o Columbite o Erythrite o Hemimorphite o Agardite-Y o Augite o Calciohilairite (Ferrocolumbite) o Euchroite o Hercynite o Agate (Quartz) o Aurostibite o Calcite, see also o Conichalcite o Euxenite o Hessite o Aguilarite o Austinite Manganocalcite o Connellite o Euxenite-Y o Heulandite o Aktashite o Onyx o Copiapite o o Autunite o Fairchildite Hexahydrite o Alabandite o Caledonite o Copper o o Awaruite o Famatinite Hibschite o Albite o Cancrinite o Copper-zinc o o Axinite group o Fayalite Hillebrandite o Algodonite o Carnelian (Quartz) o Coquandite o o Azurite o Feldspar group Hisingerite o Allanite o Cassiterite o Cordierite o o Barite o Ferberite Hongshiite o Allanite-Ce o Catapleiite o Corrensite o o Bastnäsite -
Baker County Community Sensitivity and Resilience
Baker County Community Sensitivity and Resilience This section documents the community’s sensitivity factors, or those community assets and characteristics that may be impacted by natural hazards, (e.g., special populations, economic factors, and historic and cultural resources). It also identifies the community’s resilience factors, or the community’s ability to manage risk and adapt to hazard event impacts (e.g., governmental structure, agency missions and directives, and plans, policies, and programs). The information in this section represents a snapshot in time of the current sensitivity and resilience factors in the community when the plan was developed. The information documented below, along with the findings of the risk assessment, should be used as the local level rationale for the risk reduction actions identified in Section 6 – Mission, Goals, and Action Items. The identification of actions that reduce a community’s sensitivity and increase its resilience assists in reducing the community’s overall risk, or the area of overlap in Figure G.1 below. Figure G.1 Understanding Risk Source: Oregon Natural Hazards Workgroup, 2006. Northeast Oregon Natural Hazard Mitigation Plan Page G-1 Community Sensitivity Factors The following table documents the key community sensitivity factors in Baker County. Population • Baker County has eight distinct geographic populations, as well as eight unincorporated communities. Incorporated cities are: Baker City, Greenhorn, Haines, Halfway, Huntington, Richland, Sumpter, and Unity. Unincorporated communities include: Durkee, Hereford, Pinetown, McEwen, Keating, Sparta, New Bridge, and Oxbow. Communities are geographically dispersed with little communication or interconnection. If communities need to be warned of an event, or require disaster assistance, distance and dispersal will be communication barriers. -
Writers and Writings of Texas
PD Commons ^ s : . : ; ? UC-NRLF 250 535 7/3 7 / PD Books PD Commons PD Books PD Commons PD Books PD Commons WRITERS AND WRITINGS OF TEXAS COMPILED AND EDITED BY DAVIS FOUTE EAGLETON, M.A., Professor of English in Austin College AUTHOR OF The South and Its Literary Product; Sidney Lanier, Hit Character and Work; Progress of Literary Effort in the Lone Star State; $c. But count as the angels count, friend, and see What is the treasure I bring to thee! Mallie Moor* BROADWAY PUBLISHING COMPANY 835 Broadway, New York 1913 PD Books PD Commons Copyright, 1913, BY DAVIS FOUTE EAGLETON, M.A. To the Enthusiastic Interest and Co-operation of the Literature Classes of Austin College, Is Due, in a Large Measure, the Completion of this Endeavor to Disseminate and Perpetuate the Authorship of Texas 298662 PD Books PD Commons CONTENTS PAGE Foreword 4 Introductory Poem, "Texas" 4 Survey of the Field 7 The Declaration of Independence 17 Stephen Fuller Austin 21 Sam Houston 27 David Burnet 34 Mirabeau Lamar 39 Mrs. Maude Fuller Young .' 43 John H. Reagan 50 John Crittenden Duval 59 Mrs. Fannie Baker Darden 66 Judge W. T. G. Weaver 70 Richard Bennett Hubbard 79 Mrs. Bella French Swisher v 85 Mrs. Mollie Moore Davis 88 William Lawrence Chittenden . 98 ; Friench Simpson , 106 Mrs. M. M. Jouvenat no John P. Sjolander 115 Jacob Hayne Harrison 120 Mrs. Laura Bibb Foute 127 Mrs. Belle Hunt Shortridge 136 Howell Lake Piner 147 Garence Ousley 162 Jtsse Edward Grinstead 169 PD Books PD Commons PAGJ Sydney Porter 184 Mortimer Lewis Judd v 197 Miss Olive Huck 208 Paul Whitfield Horn 220 George Pattullo 228 Miss Katie Daffan 242 Harry Lee Marriner 257 Eugene P. -
Oregon Benchmarks Spring 2005
Oregon BENCHMARKS THE U.S. DISTRICT COURT OF OREGON HISTORICAL SOCIETY NEWSLETTER The Birth of the Brandeis Brief Muller v. Oregon: Women, Law, and Labor By John Stephens n 1905, Joe Haselbock, overseer of Portland’s The Supreme Court accepted review on a writ of IGrand Laundry located at 320 N. 17th, required error. This was the Progressive Era and the Oregon one of his employees, Emma Gotcher, to work more statute was not all that unusual. Nineteen other than 10 hours on, of all days, Labor Day, Septem- states had enacted similar legislation. Muller was ber 4. (Labor Day had been a holiday in Oregon special because in 1905, the same year that Gotcher since 1887, first in the nation.) This started the had been forced to work over 10 hours, the Supreme events leading to Muller v. Oregon, 208 U.S. 412 Continue on page 2 (1908), in which the U.S. Supreme Court upheld the constitutionality of progressive legislation pro- Our next Famous Case on May 19th viding a 10-hour work day for women, but did so for retrogressive reasons, finding as fact that women Muller v. Oregon (1908) and Bunting v. Oregon were in many respects inferior to men and there- (1917) are the subjects of our May 19, 4 – 6 p.m. fore needing of protection. The opinion is studied Famous Cases presentation at the Hatfield U.S. in history and law school courses, and affects U.S. Courthouse. Our speakers include Julie Novkov, Supreme Court jurisprudence to this day. The case associate professor of political science at Univer- is also the birthplace of the Brandeis Brief. -
Gomposition and Occurrence of Electrum Atthe
L37 The Canadian M inerala g i st Vol.33,pp. 137-151(1995) GOMPOSITIONAND OCCURRENCEOF ELECTRUM ATTHE MORNINGSTAR DEPOSIT, SAN BERNARDINOCOUNTY, GALIFORNIA: EVIDENCEFOR REMOBILIZATION OF GOLD AND SILVER RONALD WYNN SIIEETS*, JAMES R. CRAIG em ROBERT J. BODNAR Depanmen of Geolngical Sciences, Virginin Polytechnic h stitate and Stale (Jniversity, 4A44 Dening Hall, Blacl<sburg, Virginin 24060, U.S-A,. Arsrnacr Elecfum, acanthiteand uytenbogaardtite have been examined from six depthswithin the tabular quartzt calcite sockwork and breccia-filled veins in the fault-zone-hostedMorning Star depositof the northeasternMojave Desert, Califomia. Six distinct types of electrum have been identified on the basis of minerat association,grain moryhology and composition. Two types, (1) p1'rite-hostedand (2) quartz-hostedelectrum, occur with acanthite after argentite and base-metalsulfide minerals in unoxidized portions of the orebody; the remaining forr types, (3) goethite-hostedelectrum, (4) electnrm cores, (5) electrumrims and (6) wire electrum,are associatedwith assemblagesof supergeneminerals in its oxidizedportions. Pyrite- hosted quartz-hostedand goethite-hostedelectrum range in compositionfrom 6l ta 75 utt.7oAu and have uniform textures and no zoning. In lower portions ofthe oxidized ore zone, electrum seemsto replacegoethite and occursas small grains on surfacesof the goethite.Textural evidencefavors supergeneremobilization of Au and Ag, which were depositedas electrum on or replacinggoethite. This type of electrumis identical in appearanceand compositionto prinary electrum,In the upper portions of the oxidized zone,secondary electum occursas a gold-rich rim on a core of elechum and as wire-like grains,both with acanthiteand uytenbogaardtite.Such secondaryelectrum contains from 78 to 93 wt./o Au. Textural relations and asso- ciated minerals suggestthat the primary electrum was hydrothermally depositedand partially remobilized by supergene processes. -
Shipwreck Traditions and Treasure Hunting on Oregon's North Coast
Portland State University PDXScholar Anthropology Faculty Publications and Presentations Anthropology Summer 2018 The Mountain of a Thousand Holes: Shipwreck Traditions and Treasure Hunting on Oregon's North Coast Cameron La Follette Oregon Coast Alliance Dennis Griffin Oregon State Historic Preservation Office Douglas Deur Portland State University, [email protected] Follow this and additional works at: https://pdxscholar.library.pdx.edu/anth_fac Part of the Archaeological Anthropology Commons, and the Biological and Physical Anthropology Commons Let us know how access to this document benefits ou.y Citation Details Cameron La Follette, Dennis Griffin, & Douglas Deur. (2018). The Mountain of a Thousand Holes: Shipwreck Traditions and Treasure Hunting on Oregon's North Coast. Oregon Historical Quarterly, 119(2), 282-313. This Article is brought to you for free and open access. It has been accepted for inclusion in Anthropology Faculty Publications and Presentations by an authorized administrator of PDXScholar. Please contact us if we can make this document more accessible: [email protected]. The Mountain of a Thousand Holes Shipwreck Traditions and Treasure Hunting on Oregon’s North Coast CAMERON LA FOLLETTE, DENNIS GRIFFIN, AND DOUGLAS DEUR EURO-AMERICANS in coastal communities conflated and amplified Native American oral traditions of shipwrecks in Tillamook County, increasingly focusing the stories on buried treasure. This focus led to a trickle, and then a procession, of treasure-seekers visiting the northern Oregon coast, reach- ing full crescendo by the mid to late twentieth century. The seekers’ theo- ries ranged from the fairly straightforward to the wildly carnivalesque, with many bizarre permutations. Neahkahnie Mountain and its beaches became the premier treasure-hunting sites in Oregon, based on the mountain’s prominence in popular lore, linked to unverified stories about the wreck of a Spanish ship. -
Silver Enrichment in the San Juan Mountains, Colorado
SILVER ENRICHMENT IN THE SAN JUAN MOUNTAINS, COLORADO. By EDSON S. BASTIN. INTRODUCTION. The following report forms part of a topical study of the enrich ment of silver ores begun by the writer under the auspices of the United States Geological Survey in 1913. Two reports embodying the results obtained at Tonopah, Nev.,1 and at the Comstock lode, Virginia City, Nev.,2 have previously been published. It was recognized in advance that a topical study carried on by a single investigator in many districts must of necessity be less com prehensive than the results gleaned more slowly by many investi gators in the course of regional surveys of the usual types; on the other hand the advances made in the study of a particular topic in one district would aid in the study of the same topic in the next. In particular it was desired to apply methods of microscopic study of polished specimens to the ores of many camps that had been rich silver producers but had not been studied geologically since such methods of study were perfected. If the results here reported appear to be fragmentary and to lack completeness according to the standards of a regional report, it must be remembered that for each district only such information could be used as was readily obtainable in the course of a very brief field visit. The results in so far as they show a primary origin for the silver minerals in many ores appear amply to justify the work in the encouragement which they offer to deep mining, irrespective of more purely scientific results. -
Temagami Times Winter 2012 Page 3
VOLUME 42 . NUMBER 1 . CIRCULATION 1,500 A FREE PUBLICATION T T THE VOICE OF THE TEMAGAMI LAKES ASSOCIATION (TLA) WINTER 2012 Lack of Bridge Hampers TAFIP’s Efforts For years the Temagami Area Fish Involvement Program (TAFIP) volunteers had a wooden bridge to cross as they traveled to the two rearing ponds off Roosevelt Road. The bridge enabled them to cross a creek whose water flows from Rib and Granite Lakes to Petrault Lake. In 2010, however, after the Min- istry of Natural Resources (MNR) personnel inspected the bridge and Andre Lamothe (5th from left) with some of his team, who now have year-round employment in Temagami. found it to be unsafe, the MNR re- moved the bridge. At that time, they did not see the need to replace it. Naden Boats Now Being Produced in Temagami When TAFIP informed the MNR By E. Gunnell mothe had been seeking a solution that plant would help to accomplish this goal. that this was their only means of access to the ponds, the Ministry It’s a brand name well known to Ca- would minimize the seasonality of the The first is the process for curing the personnel suggested that the creek nadian boaters. Naden boats, which marina business. He had purchased paint. The typical “automotive style” could be crossed without a bridge. have been produced in Canada for over If needed, a few rocks could be added 35 years, are popular from coast to coast. to the creek to Commencing in February 2012, these make crossing it durable aluminum fishing boats will be easier. -
Structural Diagenesis in Carbonate Rocks As Identified in Fault
minerals Article Structural Diagenesis in Carbonate Rocks as Identified in Fault Damage Zones in the Northern Tarim Basin, NW China Guanghui Wu 1,2,*, En Xie 3, Yunfeng Zhang 1, Hairuo Qing 2, Xinsheng Luo 3 and Chong Sun 3 1 School of Geoscience and Technology, Southwest Petroleum University, Chengdu 610500, China; [email protected] 2 Department of Geology, University of Regina, Regina, SK S4S 0A2, Canada; [email protected] 3 PetroChina Tarim Oilfield Company, Korla 841000, China; [email protected] (E.X.); [email protected] (X.L.); [email protected] (C.S.) * Correspondence: [email protected] Received: 5 May 2019; Accepted: 22 May 2019; Published: 13 June 2019 Abstract: The identification of structural diagenesis and the reconstruction of diagenetic paragenesis in fault damage zones is important for understanding fault mechanisms and fluid flow in the subsurface. Based on the examination of core and sample thin section data, we deciphered the diagenetic parasequence and their fault controls for Ordovician carbonates in the northern Tarim intracratonic basin in NW China (Halahatang area). In contrast to the uniform nature of diagenesis observed in country rocks, there is a relatively complicated style of compaction and pressure solution, multiple fracturing, and cementation and dissolution history along the carbonate fault damage zones. The relative paragenetic sequence of the structure related diagenesis suggests three cycles of fracture activities, following varied fracture enlargement and dissolution, and progressively weaker calcite cementation. These processes of structure related diagenesis are constrained to the fault damage zones, and their variation is affected by the fault activities. -
MINING in BAKER COUNTY, 1861 to 1959* by Norman S
Vol.21, No.3 THE ORE.- BIN 21 March 1959 Portland, Oregon STATE OF OREGON DEPARTMENT OF GEOLOGY AND MINERAL INDUSTRIES Head Office: 1069 State Office Bldg., Portland I, Oregon Telephone: CApitol 6-2161, Ext. 488 Field Offices 2033 First Street 239 S. E. "H"Street Baker Grants Pass *************************** MINING IN BAKER COUNTY, 1861 to 1959* By Norman S. Wagner** Introduction Baker County mining began with the discovery of gold in 'Griffin Gulch in 1861. This and the develop ment which followed at Auburn represent gold mining at its historic best. Since 1861, much water has flowed down the sluice boxes with respect to mineral resource development within the county. As a result, the dis covery story is left for historians to tell, and the following paragraphs are devoted to the high points of the many kinds of mining endeavors that occurred in Baker County between 1861 and 1959. Hydraulic and sluicing operations All of the earlier placer operations have one thing in common with Griffin Gulch and Auburn. This is that they were carried out by means of ground sluicing and hydraul icking, using generous amounts of hand labor. These means of handl ing placer ground continued in exclusive use throughout the first forty years of Baker County mining history. It wasn't until the present century that the more familiar bucket-line dredges and other kinds of mechanized digging and washing plants made their appearance. Even yet the old methods are still employed on a small scale in circumstances where ground conditions permit. The Rye Valley placers on Dixie Creek represent a notable example of an early discovery made shortly after 1862.