 | | Journal (issue) | | (1929) is considered to be the classic for the district. Many of these works are currently out of print...and research will serve as an overview of the district and as a framework from which interested persons...location and associated geology of the mines in the district. Historical and production information is summarized...Keweenaw Peninsula, has a long and complex history of mining, a fascinatingly unique geological context, and...the immense size of the deposits, the extensive mining undertaken largely by hand techniques, and the |  | | Report (volume) | | ............ r ............................. 45 Gold................................................................................................. Quartz..................................................rhombic crystal faces, from Nugget mine, Gilpin County, Colo.-................... II. A, Wedge-shaped...rhombic crystal faces, from Nugget mine, Gilpin County, Colo.............................. IV. A, Hiibnerite...Hubnerite crystals from Regan mining district, 35 miles north of Osceola, Nev........................ |  | | Journal (article/letter/editorial) | | JUAN COUNTY, COLORADO B A R B A R A and J O H N M U N T Y A N 6978 Wapiti Court Boulder, Colorado 80301...material has been obtained from a number of San Juan County mines and prospects during the last decade, in...almost ceased. COLORADO S A N J U A N C O U N T Y L I E S in southwestern Colorado. Some of the state's...vicinity of Silverton, the principal town in the county. The American Tunnel, located just north of town...and has been the major source of specimens in the county. Most museums and many priยญ vate collections have |  | | Journal (article/letter/editorial) | | Figure 1. Gold nugget, 7.67 troy ounces, Fairbanks mining region, Alaska, USA. Donated in 1977 by Arthur...Cook photo. The Occurrence and Characteristics of GOLD NUGGETS AND MASSES ROBERT B. COOK Department of...com HE COMMON IMAGE OF A GOLD NUGGET is that of a rounded piece of gold just plucked from a pan or...consistent with even the most generic definitions of gold nugget found in most general reference works and...naturally occurring gold.โ As any collector knows, that could be just about any gold specimen with little |  | | Journal (article/letter/editorial) | | Fremont County. C-O-L-O-R-A-O-O CALCITE BARBARA L. MUNTYAN Ouray County Museum Ouray, Colorado 81427...Tennessee; the Viburnum Trend district, southeastern Missouri; the Tri-State district (Missouri-Kansas-Oklahoma);...Russia. Calcite also occurs at many localities in Colorado. Further, the state is the source of calcite as...marble (from the Yule quarry at Marble in Gunnison County) that has been used for many of the great monuments...Calcite, the most common carbonate mineral in Colorado. is found in a variety of occurrences, including |  | | Report (volume) | | ยท~ ~ t ). ""' . 'r v.ยท,,.,. . ... Placer Gold Deposits of Nevada By MAUREEN G. JOHNSON GEOLOGICAL...------------------------ 1 History of placer mining in Nevada_____________________________________... Holy Cross district..-----------------------------------------------2. Jessup district.. ____________...------------------------_-------_ 3. Sand Springs district----------------------------------------------...Eldorado Canyon district..-----------------------------------------5. Gold Butte district-------------- |  | | Journal (issue) | | Collector's Newsletter $3.00 The Rock Dam Gold Prospect A New Quartz Locality, Dickinson Co., Mich~g_an Shawn...markelder@juno.com The Rock Dam gold prospect is located in central Dickinson County, Michigan, approximately...the dominant exposed bedrock in this part of the county. Excavated near the tum of the 20th century, the...themselves are thoroughly unglamorous, yielding neither quartz crystals nor any noteworthy accessory minerals...states that, "some of these quartz veins contain small quantities of free gold, as does also the quartzite |  | | Journal (article/letter/editorial) | | (above). Pyrite, Alice Glory Hole, Clear Creek County. Cluster of intergrown crystals showing light...(right). Pyrite, Mountain Spring mine, Rico, Dolores County. Cluster of modified cubes; specimen 2 by 2 inches;...C*O*L*O*R*A*D*O PYRITE BARBARA L. MUNTYAN Ouray County Museum Ouray, Colorado 81427 Mineral photographs by John R...Park City, Utah; Washington State; and numerous Colorado localities. Pyrite crystallizes in the isometric...Pyrite is the most common sulfide mineral found in Colorado; it is found in a wide variety of occurrences |  | | Report (issue) | | organization is carrying on for the direct advancement of mining interests throughout the country than can readily...in area of folio. stone, mica, corundum, iron, gold. shale, sandstone. Grant, U. S.; Bur- Zinc, lead...Pisgah........ ...... N.C.-S.C..... 148 Joplin district...... Mo.-Kans .... 476 149 Penobscot Bay ........... Mica, corundum, soapstone, talc,kaolin,gold,graphite, copper, building stone, lime, clay. Smith...Leverett, F. earth, underground water. Silver, gold, building stone, lime. Lime, clay, coal, underground |  | | Journal (article/letter/editorial) | | [University of Nebraska, Lincoln] at 13:31 09 June 2016 Colorado boasts numerous localities where fine sphalerite...Elmwood, Tennessee; the mines of the Tri-State district of Missouri-OklaDownloaded by [University of Nebraska...of sphalerite also occur at many localities in Colorado, in shades of amber, emerald- or lime-green,...Muntyan, former director of the Ouray County Museum in Ouray, Colorado, is a frequent contributor to Rocks...in her series on Colorado minerals appeared in the July/August I994 issue (โColorado Pyriteโ), September/October |  | | Report (volume) | | ............................................... GOLD AND SILVER: A geological analysis of the silver.................................... Notes on some gold deposits of Alabama, by H. D. McCaskey............Mohave County, Ariz., by F. C. Schrader................ Gold placer deposits near Lay, Routt County, Colo...Colo., by H. S. Gale...... Gold deposits of the Little Eocky Mountains, Montana, by W. H. Emmons. Geology...and mineral resources of the Osceola mining district, White Pine County, Nev., by F. B. Weeks....... |  | | Show/Event (guide) | | Carolina, South Dakota, and Tennessee Shows 29 Colorado Shows 46 Texas Shows 31 Denver Gem & Mineral...Contact Xpo Press at P.O. Box 740864, Arvada, Colorado 80006 USA; International 1 -(720) 946-2808; Toll-free...& Mineral Society... 32 Colorado Independent Warehouse Show..... 33 Colorado Mineral & Fossil Show.....in a snowy lot behind a WalMart in Westminster, Colorado, not far from my house. Fired. Team sales quotas...After a lunch we shared at El Rancho in Evergreen, Colorado โ over 17 years ago โ I agreed to produce full-color |  | | Report (volume) | | Alteration in the White River Altered Area and in the Osceola Mudflow, Washington By David A. John, James J....Alteration in the White River Altered Area and in the Osceola Mudflow, Washington By David A. John, James J....Enumclaw to the White River Altered Area and the Osceola Mudflow along the lower White River, Washington................................. 10 Part 2: The Osceola Mudflow in the Lower White River .................................. 11 General Features of the Osceola Mudflow ...................................... |  | | Report (issue) | | oresofo0000kell Telluride Ores of Boulder County, Colorado The Memoir Series of The Geological...America, Inc. Memoir 109 Telluride Ores of Boulder County, Colorado WILLIAM C. KELLY EpwINn N. GODDARD Department...SOCIETY OF AMERICA, INC. Colorado Building, P.O. Box 1719 Boulder, Colorado 80302 Printed in the United...assembling a representative collection of the Boulder ores. Dr. T. S. Lovering of the U.S. Geological...and numerous ore samples were donated by local mining men, particularly Fred Dopp, H. M. Williamson, |  | | Journal (article/letter/editorial) | | Although Colorado may be most noted for rhodochrosite or amazonite, the many varieties and associations...associations of quartz found throughout the state rank it as one of the premier worldwide localities for that...a k e w o o d , Colorado 80225 DIANNE L. K I L E 333 S a l e m Street Aurora, Colorado 80011 C O L O...for about 750 known mineral species.* Of these, quartz is one of the most desirable from a collector's...to Minerals of Colorado: A 100-Year Record (Eckel, 1961). 374 ROCKS & MINERALS Quartz was a familiar |  | | Journal (issue) | | Collectorโs Newsletter $6.00 Maynard Bixby - Part 1 Mining Expert, Mineral Dealer and Sharp Shooter Mark Ivan...mountain ranges of Utah. He was a Salt Lake City mining expert often contracted to evaluate mines, a mineral...family hill farm just outside of Wyalusing Township, along the Susquehanna River, Bradford County, Pennsylvania...town of WilkesBarre, a center for anthracite coal mining. The 1870 Census shows both Maynard and Charles...area. He spent the following summer up in the Colorado mountains hunting and camping. The Denver Weekly |  | | Journal (article/letter/editorial) | | (i) Keewatin, serpentine and pyroxenite; deformed quartz porphyry and porphyrites, basalts, diabases and...granite; post-Middle Huronian (Keweenawan ?) dikes of quartz and olivine diabase. '"Geology of the Chibougaman...Chibougaman Region," Report by the Chibougaman Mining Concession, Province of Quebec, Canada, 1911, 215...(Quebec) Graphite Deposits," Quart. Bull. Can. Mining Inst., 1910, pp. 107-15. 2 E. Dulieux, "The Chib6gomon...Bancroft' states that the oldest rocks in Northern Yuma County, Arizona, are granites and diorites, probably of |  | | Journal (issue) | | typically contains three minerals: kaolinite, mica and quartz. The SRM consists of 60 grams of air-dried and...to preserve and promote the unique geologic and mining heritage of Wisconsin while underscoring the importance...Standard (SRM 2460a) This SRM consists of a nickel-and-gold-coated polyurethane standard bullet mounted on a...abandoned mine sites in the mountains of central Colorado. A unit of SRM 2780a consists of approximately...history are welcomed additions to my โmineral and mining memorabiliaโ collection. If you have some of these |  | | Journal (article/letter/editorial) | | Box 25046, Denver Federal Center, Denver, Colorado 80225, USA 2 US Geological Survey, MS 963, Box 25046...25046, Denver Federal Center, Denver, Colorado 80225, USA Abstract. Six diverse intrusive igneous types...900 km 2 in the southern Snake Range, White Pine County, Nevada. The previously recognized variety among...900 km 2 in the southern Snake Range, White Pine County, Nevada. The igneous types are present as discrete...and Van Loenen 1971). Less is known about the Osceola and Lexington Creek intrusive rocks, which appear |  | | Report (issue) | | localities in the vicinity of Cartersville, Bartow County, Ga., and at one place between 1\ and 3 miles southeast...of the Cartersville district has been worked out by the senior writer. The district is in the southeastern...southeastern half of. Bartow County, and the outcropping rocks are the older crystalline schists, a Bull. U....the yellow ocher deposits in the Cartersville district is a direct replacement of the silica in the Weisner...are met in mining. The smaller cavities are generally lined with a crust of small quartz crystals, while |  | | Journal (issue) | | R. Kampf Natural History Museum of Los Angeles County Arthur Roe Tucson, AZ Abraham Rosenzweig University... by P.J. Dunn A new stolzite occurrence: Broken Hill, Australia........................................A. Rickard Allactite from Franklin and Sterling Hill, New Jersey............................... 251 ...Czechoslovakia France Germany Japan Italy Mexico Namibia USSR USA Zaire Total Total number of species during 5-year...species avidly sought after by advanced The Broken Hill orebody yielded fine, very large crystals o f stolzite |  | | Journal (article/letter/editorial) | | m'vadla Gold, Silver, and Copper Deposits and Their 11Iclllrrerals DAVID VON BARGEN N112 W18695 Mequon...area and created the state (1864). There are 526 mining districts in the state, 60 of which produce nonmetallic...nonmetallic ores (Tingley 1998). Three major mining booms have occurred in Nevada: 1860-1880 (Comstock...of disseminated gold). The state regained its preeminent status in precious-metal mining with the development...Nevada ranked first in gold and silver production with 7.83 million ounces of gold and 24.6 million ounces |  | | Book | | T. J. Bornhorst, P. Brandes, R. Clark (Cliffs Mining Services Co.), B. C. Cornilsen, R. V. Dietrich...helpful suggestions throughout the project; to Ashton Mining of Canada, Inc. and Crystal Exploration, Inc.,...APPENDIX I: MICHIGAN MUSEUMS AND EXHIBITS FEATURING MINING, MINERALS, ROCKS, AND FOSSILS .......................243 APPENDIX II: MINERAL SPECIES LISTED BY COUNTY ...............................248 ABOUT THE AUTHORS...gabbro, syenite (rare), rhyolite, felsite (including quartz porphyry), andesite, basalt (including diabase) |  | | Journal (article/letter/editorial) | | mine, Colorado; Tom Rosemeyer historiยญ cal photo. May/June: Barite on calcite, Stoneham, Colorado; Brian...mine, Westmoreland, New Hampshire; Resurยญ rection Mining Co. specimen, Ronald E . Bentley photo. September/October:...Keweenawan Basalt, South Range Quarry, Douglas County, Wisconsin, W. S. Cordua, 412-415 Anatase, New...Hampshire, 303 Anglesite, Colorado, 132 Anhydrite, Colorado, 143 Ankerite, Colorado, 132, 143 Apatite, New...Hampshire, 304 Augite, Wisconsin, 414 Barite: Colorado, 133, 143, 200-222; New Hampshire, 290, 334; |  | | Report (issue) | | (CaBSiO4OH) vesicle filling from a basaltic Houghton County lava flow. Small specks of native copper occur...eventually led to one of the biggest and most important "mining booms" in this country's first century. Despite...instilled confidence in North Country mining and initiated the modern mining era. Choice 'Lake Copper' furnished...never documented by geologists working in the district during its decades of maximum activity. Hence...exceptionally fine, twinned analcite crystals from Houghton County ยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยทยท-ยทยท-ยทยทยทยทยทยท-ยทยท-ยทยทยทยทยทยทยทยท |
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