 | | Report (issue) | | Gold in Minerals and the Composition of Native Gold Gold in Minerals and the Composition of Native...Native Gold By Robert S. Jones and Michael Fleischer GEOLOGICAL SURVEY Washington 1969 CIRCULAR 612...considerations ----------------------------------------Gold in minerals ------------------------------------------------------...------------- _ Composition and the fineness of gold ---------------------------- ___ References cited...Analyses of gold in minerals made since 1954 --------------------10 4. Variation in fineness of gold with depth |  | Meng, Lin, Huang, Fei, Gao, Wenyuan, Wang, Daoheng, Zhu, Jianxi, Xing, Changming, Tan, Wei, Tang, Xu (2020) Multi-stage hydrothermal processes at the Laozuoshan gold deposit in NE China: Insights from textures and compositions of sulfide assemblages. Ore Geology Reviews, 117. 103275 doi:10.1016/j.oregeorev.2019.103275 | Journal (article/letter/editorial) | | Multi-stage hydrothermal processes at the Laozuoshan gold deposit in NE China: Insights from textures and...Multi-stage hydrothermal processes at the Laozuoshan gold deposit in NE China: Insights from textures and... Multi-stage hydrothermal processes at the Laozuoshan gold deposit in NE China: Insights from textures and...Ministry of Education on Safe Mining of Deep Metal Mines, and School of Resources and Civil Engineering,...100029, China Abstract The Laozuoshan gold deposit is a large gold deposit which experienced Variscan skarn |  | | Journal (article/letter/editorial) | | Characteristics of Supergene Gold of Karst Cavities of the Khokhoy Gold Ore Field (Aldan Shield, East... Abstract: Typomorphic features of supergene gold in karst cavities were studied in the recently discovered...discovered Au–Te–Sb–Tl deposit within the Khokhoy gold ore field of the Aldan-Stanovoy auriferous province...supergene gold, massive and porous, are recognized there. The first type is represented by gold crystals...impurity. The second type is represented by mustard gold of two types with different internal structure: |  | | Journal (issue) | | White Development Officer William D. Panczner GOLD! Associate Editors written content Paul E. Desautels...Julius Weber Mamaroneck, N.Y. Articles Collecting gold mining memorabilia................................323 by W. E. Wilson and R. Bentley Nova Scotian gold ..................................................County, California: a modem source of crystallized gold .................................................... 347 by A. R. Kampf and P. C. Keller Harvard gold ............................................... |  | | Journal (article/letter/editorial) | | The M OC K I N G B I R D Gold Mine Downloaded by [University of New Mexico] at 10:16 27 November 2014... or the avid mineral enthusiast, gold, especially crystallized gold, is one of the most coveted of all...all collectible species. Of the thousands of known gold occurrences, few have produced aesthetic macroscopic...of the finest gold specimens known, including incredible examples of crystallized gold from the Colorado...Sixteen-to-One, Eagle’s Nest, Diltz, Artru, and Mockingbird mines. These specimens commonly have bright luster and |  | | Journal (article/letter/editorial) | | Anthropology, . . . . . . . . .49I Paleontology, Am. Mus. . .494 Nat. Hist., . . . . . . . . . . '513...Exhibited by ROLAXD U. DIXON. 3. Designs of the Golds of the Amoor River. From tlie col2. lections of...Mining District, Colorado. f. Mother Lodc Mining District,, California. f Tenmile Mining District, Colorado...Basin. i. Monograph on the Crystal Falls Iron District of Michigan. tii. Monograph on the Illinois Glacial...University. 23. Telluride Gold Ores from Colorado, Specimens from the Cripple Creek district and from the Independence |  | | Journal (issue) | | (like Harvard, the Carnegie Museum and the cole des Mines) have begun programs to photograph their specimens...Michigan Tech and joined Einer Erikson at Silver King Mines in Ely, Nevada in 1963, where he worked as an exploration...ready to show it off. In 1965 he left Silver King Mines to manage the Research Laboratory for Phelps Dodge...ne specimens of sul des such as pyrrhotite, arsenopyrite, sphalerite and galena, associated with well...their mines, most of which were flooded or otherwise rendered inactive during the war. These mines are |  | | Book | | minerals. From precious native elements such as silver, gold and copper to complex silicates such as vesuvianite...pride of any geological collection. From the green, gold and blue iridescent sheen of labradorite to the...(bottom), also known for obvious reasons as 'fool's gold'. stone lying there. To start with, they probably...of an ancient treasure, lapis lazuli. Copper and gold were first used at least 10,000 years ago. They...times. colour makes them easy to see. Copper and gold were both too soft to make tools from, but the discovery |  | Chen, Maohong, Mao, Jingwen, Li, Chao, Zhang, Zhiqiang, Dang, Yuan (2015) Re–Os isochron ages for arsenopyrite from Carlin-like gold deposits in the Yunnan–Guizhou–Guangxi “golden triangle”, southwestern China. Ore Geology Reviews, 64. 316-327 doi:10.1016/j.oregeorev.2014.07.019 | Journal (article/letter/editorial) | | Re-Os isochron ages for arsenopyrite from Carlin-like gold deposits in the Yunnan-Guizhou-Guangxi...Dang, Yuan, Re-Os isochron ages for arsenopyrite from Carlin-like gold deposits in the Yunnan-Guizhou-Guangxi...MANUSCRIPT Re-Os isochron ages for arsenopyrite from Carlin-like gold deposits in the Yunnan-Guizhou-Guangxi...one of the regions hosting Carlin-like gold deposits in China. Gold deposits in this region can be grouped...type controlled by stratigraphy. Arsenopyrite is one of the major gold-bearing minerals in these deposits |  | Michel, Dominique, Giuliani, Gaston, Olivo, G. Ribeiro, Marini, Onildo Joao (1994) As growth banding and the presence of Au in pyrites from the Santa Rita gold vein deposit hosted in Proterozoic metasediments, Goias State, Brazil. Economic Geology, 89 (1) 193-200 doi:10.2113/gsecongeo.89.1.193 | Journal (article/letter/editorial) | | FROM THE SANTA RITA GOLD VEIN DEPOSITHOSTEDIN PROTEROZOIC METASEDIMENTS, GOldS STATE,BRAZIL DOMINIQUEMICHEL...pyritesarethe onlyonesto recently for base metal and gold depositsfrom nic-richoscillatory-zoned variousgeologicenvironments...containinvisiblegold.The covariationsin As andAu sediment-hosted gold deposits(Wells and Mullens, indicatethat they were...transportedin the samesoluprocesses led to 1973) and gold depositsfrom greenstonebelt se- tion andthat the...MacLeanandFleet (1989) alsoobservedAs growth The SantaRita Gold Deposit bandingsin pyrites from the Witwatersrandgold |  | | Book | | FRANCE; Curator, School of Mines, Paris 4 F. HOFMANN, Professor, School of Mines, Freiberg, EAST GERMANY...H. J. SCHUBNEL, Professor and author, School of Mines, Paris, FRANCE ¥& JOHN SINKANKAS, author and collector...epidote are omitted, how is it possible to select two golds, two silvers, two rhodochrosites, and two siderites...localities: the Egyptians were working gem and gold mines on the Upper Nile River, the Greeks were busy...the civilized world was now widely using bronze, gold, silver, and lead, no systematic method for the | | | Book | | FRANCE; Curator, School of Mines, Paris ^ F* HOFMANN, Professor, School of Mines, Freiberg, east Germany...j. schubnel, Pro fessor and author, School of Mines, Paris, FRANCE ^ JOHN sinkankas, author and collector...epidote are omitted, how is it possible to select two golds, two silvers, two rhodochrosites, and two siderites...localities: the Egyptians were working gem and gold mines on the Upper Nile River, the Greeks were busy...the civilized world was now widely using bronze, gold, silver, and lead, no systematic method for the |  | | Journal (issue) | | appt.) Tsum eb Minerals, W estern Colo. Fluorite/Am ethyst & Fossils E-mail: M PBERSCH@ aol.com Glacier...Sunnywood Collection Bill & Elsie Stone 12068 E. Am herst Place Aurora, CO 80014 303-368-7497 (by Appt...said at M ike’s funeral service in Washington. I am indebted to Walter Fleischer for providing other...the Com mission on N e w Minerals and M ineral N am es o f the International Mineralogical Association...January-Fehruary, 1999 7 PflLTPORNTA DFiAl FrR Coogan Gold Company E d a n d K ay C o o g an P.O. Box 1631 |  | | Journal (issue) | | Place Tucson, AZ 85741 ‘ Continued on page 111 Gold! Introduction G old notes from the e d i t o r ...Birch 5 California The history of crystallized gold in C a lif o r n ia ................ 33 by W. C...otable gold occurrences of G eorgia & A labam a . . . . 65 by R. B. C ook N o rth C arolina gold ........hat's new in gold? Venezuelan gold (by W. E. W ilson) .......................... 89 A rizona gold (by W. E...89 Siberian gold (by W. E. W ilson) ................................. 89 C alifornia gold (by D. L e ic |  | | Journal (issue) | | Colorado N uggets Comstock Mineral Co Creations o f Gold Crystals Unlimited Crystals from Heaven D&J Rare...Minerals Stonekeep Gem & Jewelry, Inc. Singing Bear Gold Panning Superb Minerals India, PVT The Crystal...W est side of Hwy. 62 W endy & Frank M elanson L ’Am able, Ontario K0L2L0 Tel: (613) 332-1032 • FAX: (613)...from Monte Somma, hauyne from Mendig in the Eifel District, and nosean from the Alban Hills shown in Figures...dodecahedral crystal on biotite from M endig, Eifel district, Germany. Collection of Berndt Ternes; photo by |  | | Book | | edition by a team organized by Prof. Dr. C H R . AM S T U T Z (with additions and corrections by the...completing it more rapidly t h a n I can now; since I am more burdened by work of all kinds t h a n ever before...minerals associated with strongly radioactive ones. I am convinced t h a t in the future much new knowledge...comparative study from colleagues, institutes, and mines; many samples were collected by the writer himself...lead to a new and very voluminous book! I hope and I am convinced t h a t the new form of this book will |  | | Book (volume) | | Ol’ga V. Bobrova and Evgeny G. Sidorov Mustard Gold of the Gaching Ore Deposit (Maletoyvayam Ore Field...and Ekaterina A. Selivanova Mustard Gold in the Oleninskoe Gold Deposit, Kolmozero–Voronya Greenstone...Characteristics of Supergene Gold of Karst Cavities of the Khokhoy Gold Ore Field (Aldan Shield, East...Composition and Ligand Microstructure of Arsenopyrite from Gold Ore Deposits of the Yenisei Ridge (Eastern...“Invisible” Noble Metals between Pyrite and Arsenopyrite Exemplified by Minerals Coexisting in Orogenic |  | | Journal (article/letter/editorial) | | IN No. 7 GOLD. R. M. THOMPSON. ABSTRACT. Minor amountsof many elementsoccur in gold. These minor...minor elementsvary greatly in gold taken from different districts. These differencescan more readily be related...any difference in the type of deposit in which the gold is found. In most casesthese minor elements are...chemicallyrather than mechanicallyincludedin the gold. Preliminary resultsalso suggestthat after more...somecaseseven the mine, from which a particular sampleof gold originates. INTRODUCTION. DURING recent years there |  | | Journal (article/letter/editorial) | | known for a single discovery of large masses of gold and tellurobismuthite (“tetradymite”), virtually...important with respect to value, if nothing else. Gold specimens touted to be from localities that were...to late-1800s things began to change. Attractive gold specimens became increasingly available from a wide...wide variety of California localities. Colorado mines began to produce fine specimens as did those in...localities that produced good coarse gold. Entire collections focusing on gold were assembled by wealthy collectors |  | | Journal (issue) | | mineral localities: The Bastnas Mines, Riddarhyttan Ore Field, Bergslagen District, Vastmanland, Sweden ......BASTDAS ffiIDES RIDDARHYTTAD ORE FIELD, BERGSLAGED DISTRICT, VASTffiADLADD, SillEDED Lennart Ohman Hi:igviltsvagen...south-central Sweden, where tens of thousands of different mines have been worked for nearly a thousand years. Iron...fields, with approximately 300 large and small mines. Iron ore mining began in the mid-14th century,...certainty from the mid-14th century, making this district one of the oldest in Sweden. Though the mine was |  | | Journal (article/letter/editorial) | | focus. There have been individual species such as gold and azurite and geographical areas such as Africa...sulfosalts from now exhausted Cornish and German mines; silver from Kongsberg, Norway, and various German... cassiterite, quartz, and arsenopyrite; Hungarian stibnite; Romanian golds—the list goes on and on, far...collections, specimen-specific digs, and currently active mines and quarries. There will be the usual high-quality |  | | Journal (issue) | | ........................... Reference Guide to Mines, Tips & Quarries 47 .............................. should I be surprised or should I be pleased? I am referring to the amount of interest the the last... { I Please note all those who have seen the Mines & Minerals magazine the dates in there are INCORRECT...of Mines and Minerals, Lapis) and a variety of pamphlets; it also includes a video of Manx mines and...but on closer inspection and much deliberation I am finding it difficult to ,. understand how the mechanism |  | | Report (issue) | | are maintained as part of a statewide database on mines, prospects and mineral occurrences throughout Alaska...Main: Au, Pb Other: As Ore minerals: Arsenopyrite, galena, gold, pyrite Gangue minerals: Limonite, quartz...disseminated pyrite and arsenopyrite with trace amounts of silver and free gold. Gold is preferentially in... Cu, Pb Other: As, Mn, Sb, Zn Ore minerals: Arsenopyrite, chalcopyrite, galena (argentiferous), malachite...thick, that contains pods of galena, pyrite, arsenopyrite, possible tetraPageS TL004 Alaska Resource |  | | Book | | (bottom), also known for obvious reasons as ‘fool's gold'. and there in the stone you may actually see fossils...deep underground, such as those in the Austrian Tyrol and in Cornwall. Again, locating these sources required...practical dug mines to get at them underground. geological skill as they Copper and gold were first used...great unconformities (see Reading the Copper and gold were both too soft to geology book, De Re Metallica...as nickel years and some brand new - and is and gold that combine readily with rarely more than 10km/6 |  | | Journal (issue) | | Advertising Manager Thomas P. Moore Tpmoorel@cox.net A gold specimen from the Spanish Dry Diggings, Eldorado...Albite, 11.2 cm, from the La Marina mine, Muzo District, Boyaca Department, Colombia. See the article...mineral room wall. And in 2016 we began presenting gold medallions-large pins with a magnetic clasp--that...IHI1IJNGA1llY. Figure 1. "Internal view of the silver mines near Schemnitz, in Hungary" published by C. Brightly...Hodrusa-Hamre (in the Banska Stiavnica mining district) is also the type locality for hodrusite. V INTRODUCTION |
|
