 | | Journal (issue) | | Sector zoning in epidote from the Jamieson River area, Victoria. Kwak, T.A.P. and Hendrickx, M. 2(2):51-54...1(2):17-23 Mt Isa 2(2):76W Mount Oxide 2(1):3-10 Red Dome Gold Mine, Chillagoe 2(1):40-41W Scarborough 2(2):76W...Quarry, Hobart 2(1):37 Hellyer Bridge 2(1):34 Hobart area 2(1):34 Kara Mine 2(1):34 Lord Brassey Mine 2(1):34...2(2):47-50 Daylesford 1(2):13-15 Inglewood area 1(2):29W Jamieson River area 2(2):51-54 Lake Boga 2(1):37, 41W;...Dalinegorsk 1(2):30W Western Australia: Gascoyne area 2(1):41W Goongewa Mine, Fitzroy Crossing 2(2):76-77W |  | | Report (issue) | | extension of the deposit in the HutchinsonLyons area, central Kansas, has been known for many years....south, have not been ascertained, but in general the area of thick salt extends fully 650 miles from north...been made of salt and brines from borings in the area treated in this report, and invariably the potassium...have not been determined, especially in the wide area of the Staked Plains, where the strata are deeply...deposited. This question, as affecting the western Texas area, has been discussed by Udden.1 KANSAS. Many published |  | | Journal (issue) | | gone with the demise of hard-rock mining in the county, and the practice of exchange with museums, which...were when compared to previous holdings. Even in an area as well known as LeadhillsWanlockhead, where little...a suite of minerals from the Yorkshire Dales, an area not known for fine display specimens, to its collection...number of collectors in Britain compared to the USA, Germany or France, the tendency for British collectors...range from sites devoted to the mineralogy of an area (try Hal Currie's site at http://www.curriehj.freeserve |  | | Journal (issue) | | Operator of the Crystal Peak Gem Mines, Teller, Colorado Mark Ivan Jacobson markivanjacobson@gmail.com...com A. B. Whitmore is remembered in Colorado as the owner and operator of the Crystal Peak Gem Company...various times in Ohio, Iowa and Illinois. Moving to Colorado In July 1875 Albert Whitmore at the age of 21...south into Colorado via Denver, heading for Colorado Springs. "I believe I got into Colorado about July...ground still covered with snow, hail and sleet" (Colorado Springs Gazette I 931 ). The Denver Daily Times |  | | Journal (issue) | | Dassu, Pakistan; Amethyst from Guerrero, Mexico; Gold from California; Pyromorphite from the Bunker Hill...Nuristan, Afghanistan; Neptunite from San Benito County, California; Spinel from Mogok, Burma; and Emerald...mine, Mexico; elbaite from Nuristan, Afghanistan; gold from California; barite from the M iekle mine, Nevada;...father had found while “rock hunting” in the Bishop area of California. That got his attention once again...world. The Natural History Museum of Los Angeles County was particularly interesting among the museums |  | | Journal (article/letter/editorial) | | Mining and Technology, Socorro, New Mexico 87801, USA Abstract The Copper Cliff porphyry copper prospect...phyllic alteration zones in porphyry copper systems (Alva Jimenez, 2011; Cohen, 2011); however, the vectors...experience in Resolution (Arizona, USA), the Copper Cliff prospect (Montana, USA), and several other smaller...observed at the low-temperature margins of the systems (Alva Jimenez, 2011; Cohen, 2011). In addition, some trace...of the original mineral replaced by white mica (Alva Jimenez, 2011). Other studies of alteration minerals |  | | Report (issue) | | Slate No13 Gypsum and Anhydrite No14 No 15 Gold Mica No16 Potash No17 Sandstone No18 Silica...Fig 6 Price of silver and ratio of the value of gold to silver: 1870-1981 71 Fig 7 United Kingdom...Fig 8 United Kingdom production of silver, by county: 1861-1870 85 Table l World primary silver resources...per tonne are not uncommon. Mexico, Canada, Peru, USA and Australia together account for 750/o of Western...properties, silver is more closely associated with gold than :with any other element, although economically |  | | Journal (article/letter/editorial) | | commonly show cubic, octahedral, less available than gold, and from that and dodecahedra1 faces. Parallel...Complete solid solution exists between silver and gold, proceeding relationship between the production...varieties aurian silver and argentian gold (electrum) to gold. Mercurian ment of Andean countries, detailed...those containing other silver minerals, Keweenaw County. barite, fluorite, and quartz and those characterized...characterized by nickel The search for silver and gold during the latter half of the and cobalt arsenides with |  | Alva-Jimenez, Tatiana, Tosdal, Richard M., Dilles, John H., Dipple, Gregory, Kent, Adam J.R., Halley, Scott (2020) Chemical Variations in Hydrothermal White Mica Across the Highland Valley Porphyry Cu-Mo District, British Columbia, Canada. Economic Geology, 115 (4). 903-926 doi:10.5382/econgeo.4737 | Journal (article/letter/editorial) | | Cu-Mo District, British Columbia, Canada Tatiana Alva-Jimenez,1,* Richard M. Tosdal,1,†,** John H. Dilles...Oregon State University, Corvallis, Oregon 97331, USA 3Mineral Mapping Party Ltd, 109 Joyce Street, Hawley...Indian Avenue, Folly Beach, South Carolina 29439, USA. ISSN 0361-0128; doi:10.5382/econgeo.4737; 24 p...., 2001), iron oxide copper-gold (Tappert et al., 2013), and orogenic gold (Wang et al., 2017), as well...well as the porphyry Cu deposits (Alva-Jimenez, 2011; Cohen, 2011; Harraden et al., 2013; Halley et al |  | | Journal (article/letter/editorial) | | the Copper Flat Hydrothermal System, New Mexico, USA Chaneil J. Wallace, Kierran C. Maher PII: DOI: Reference:...the Copper Flat Hydrothermal System, New Mexico, USA, Ore Geology Reviews (2018), doi: https://doi.org/...Copper Flat 2 Hydrothermal System, New Mexico, USA 3 Chaneil J. Wallace* and Kierran C. Maher 4 5...Flat hydrothermal system in Hillsboro, New Mexico, USA, is hosted by a partially brecciated porphyritic...The Copper Flat hydrothermal system in New Mexico, USA, has been described as a porphyry Cu deposit (Dunn |  | | Journal (issue) | | Grguric 19 The silver and cobalt mineralisation near Alva, Central Region, Scotland S Moreton, P Aspen, D... Thaumasite from Hi gh Sedling mine, Weardale. County Durham, and from Shap, Cumbria, England B. Young...between Stainmore and the Tyne Gap, is considered. The area coincide,' with the structural unit known as the...related lowlands of the Durham Coalfield. This is the area described in detail by Dunham (1990). The regional...abundant and has been worked as 'umber' in the Alston area , notably at Horse Edge (NY 685 446). 'Yellow ochre' |  | | Report (issue) | | ................3 Training sites for epithermal gold model. ..................................................................................5 Placer gold sites.............................................26 Tables Table 1. Training sites for epithermal gold. ...............................................................................8 Table 2. Placer gold sites ............................................ Location map showing study areas of epithermal gold and carbonate-hosted lead-zinc deposits..4 2 Abstract |  | | Book (edition) | | mentioned this in the NOTES. I have not included gold unless it appears in my original reference, but...been necessary to mark ‘Not Known’. COUNTY: This is the correct county name at the time of going to press...large complex the map reference will locate the main area. Where I have identified individual features, the...295292) LOCATION: 2.5 miles S.W. of Aberfoyle COUNTY: Stirling MAP: E 365 : P 381 : 6" Perthshire...(C-Canmore ID 30642) LOCATION: North of Baledgarno COUNTY: Perth and Kinross MAP: E 380 : P 338 : 6" Perthshire |  | | Journal (article/letter/editorial) | | Cajori, Prof. of Mathematics, Colorado, Col., 1119 Wood Avenue, Colorado Springs, Col. Frederic J. Carnell...and Q. R. R. Co., 209 Adams Street, Chicago, 111. Alva C. Dinkey, General Supt. Steel Works, Homestead...hlonticello, IColorado Springs, Colo. Charles I. Hays, Rorthside High...Engineer, Beaumont, Texas. Jacob L. Ludlow, 434 Summit Street, Winston, N. C. Chester W. Lyman, international...Electrical Engineer, Vanilergrift, TTTestmoreland County, P a . E. Hobart Porter, Jr., Consulting Eleo. |  | | Journal (issue) | | amazonite chips. whose color rivals the best from Colorado and Russia. Having trave led oft en in Namibia...lorandlle recovered from the Mercur Mrne (a Carlin-type gold deposit), Tooele Co., Utah, a white, s ilky, fibrous...post-gold mi nerali zati o n prod uced either during the wan ing stage o f hy drotherm al gold mineralization...in a Carlin -ty pe gold deposit. Reference Ferdock. G .C., (2003). Carlin-type gold deposits. in Castor...themselves , covering s uch topics as the Carlin-type gold deposits. precious metal deposits, porphyry and |  | | Journal (issue) | | Mountain Association of Geologists Summit Sponsors PLATINUM SPONSOR GOLD SPONSORS SILVER SPONSORS OUTCROP...Gary Gianniny, Fort Lewis on the Water (FLOW) Colorado Glaciology | June 25 | Minturn/Vail, CO Trip leader:...Association of Geologists CONTENTS FEATURES 6 2022 RMAG Summit Sponsorship Packet 16 Lead Story: RMAG Centennial...Adam Lane 45 Calendar ASSOCIATION NEWS 2 RMAG Summit Sponsors 4 2022 RMAG Field Trips 11 RMAG Hybrid...Mountain Geologist OUTCROP | April 2022 RMAG Summit Sponsorship OUTCROP | April 2022 6 2 0 2 2 |  | | Report (issue) | | June 1951 INDEX OF SURFACE-WATER RECORDS PART 9.-COLORADO RIVER BASIN TO SEPTEMBER 30, 1950 Prepared by... C. INDEX OF SURFACE-WATER RECORDS PART 9.--COLORADO RIVER BASIN TO SEPI'EMBER 30, 1950 EXPLANATION...the stream-flow and reservoir stations in the Colorado River Basin for which recorda have been or are...stating the published source of the figure of drainage area. Under "period of record" breaks of less than a... 2 INDEX, PART 9, COLORADO RIVER BASIN Drainage area (square miles) Colorado River (Grand)(North Fork |  | | Book (volume) | | Inverness-shire: Heliotrope. brown. Aberdeenshire summit : on the Mount Keen, of lustre greasy to horny...in the Scuir, with Chalcedony and Eigg, on the summit of Braeriach, banded Sgurr lavender, banded with...Pencraik, near Traprain Law, in claystone, with At the summit of Lucklaw, passing into felspar. Blackford Hill...may find useful. Mr it Thorns has compiled the County List. Messrs Macfarlane & Erskine's engravings...Great Britain and 1879 he was elected the Keith Gold Medal for his upon the Ehombohedral Carbonates |  | | Journal (issue) | | The Mineral Collector's Newsletter $3.00 Russian Gold: An Overview Bill Shelton 19 Highland Avenue Westfield...reflection and a rainbow of color made me think of gold wires and branches (see figure I). Perhaps some...similarity can be a part of the formation (in nature) of gold dendrites. A tiny groove in a substrate long since...product is my focus here along with all other natural gold mineral objects from the former Soviet Union, in...will have an awareness of is a gold nugget, perhaps due to the "Gold Rush" stories and the significance |  | Alva-Valdivia, L. M., Rivas, M. L., Goguitchaichvili, A., Urrutia-Fucugauchi, J., Gonzalez, J. A., Morales, J., Gómez, S., Henríquez, F., Nyström, J. O., Naslund, R. H. (2003) Rock-Magnetic and Oxide Microscopic Studies of the El Laco Iron Ore Deposits, Chilean Andes, and Implications for Magnetic Anomaly Modeling. International Geology Review, 45 (6) 533-547 doi:10.2747/0020-6814.45.6.533 | Journal (article/letter/editorial) | | Implications for Magnetic Anomaly Modeling L. M. ALVA-VALDIVIA,1 M. L. RIVAS, A. GOGUITCHAICHVILI, J....2000). 533 534 ALVA-VALDIVIA ET AL. FIG. 1. Simplified map of the study area showing the location...associated igneous rocks (Alva-Valdivia and UrrutiaFucugauchi, 1995; Alva-Valdivia et al., 1991, 2001;...Seven iron deposits are recognized in the El Laco area (Fig. 1), with total estimated resources of 500...The hematite is partly altered to goethite. 536 ALVA-VALDIVIA ET AL. FIG. 2. Representative reflected-light |  | | Journal (article/letter/editorial) | | difference in source, the high uranium values from area 1 strongly suggest epigenetic enrichment of the...of bitumen-bearing MVT deposits are in the type area in the Mississippi Valley (Marikos et al. 1986)...locate copper ore mineralization. Uranium, thorium, gold. The enrichment of uranium within organic materials...deposits are particularly abundant in Utah and Colorado and exhibit partial replacement of the sandstone...the Witwatersrand deposits contains particles of gold, galena, sphalerite, chalcopyrite and irregularly |  | | Report (issue) | | used the word "glade" to denote a moist, swampy area since the 17th century. One spelling of the Seminole...the National Gazetteer is identified by geographic area and year and will be revised periodically; the year...or any other cultural features (city, village, county, township, crossroad, and railroad siding) are...name is a written variant for a place, feature, or area that has another name as its official name. Information...appropriate variants. County (fourth column) This column lists the name of the county in which the entity |  | Rojas, Paula A., Barra, Fernando, Reich, Martin, Deditius, Artur, Simon, Adam, Uribe, Francisco, Romero, Rurik, Rojo, Mario (2018) A genetic link between magnetite mineralization and diorite intrusion at the El Romeral iron oxide-apatite deposit, northern Chile. Mineralium Deposita, 53 (7) 947-966 doi:10.1007/s00126-017-0777-x | Journal (article/letter/editorial) | | reported for other Chilean IOA and iron oxide-copper-gold deposits. New 40Ar/39Ar dating of actinolite associated...end of iron oxide-apatite deposit formation in the area. Keywords Iron oxide-apatite . Sulfur stable isotopes...Michigan, 1100 North University Ave, Ann Arbor, MI, USA 5 Servicio Nacional de Geología y Minería (SERNAGEOMIN)...origin for the magnetite ore bodies. In contrast, Alva-Valdivia et al. (2003), based on petrographic and...of iron oxide-apatite (IOA) and iron oxide-copper-gold (IOCG) deposits in the Cretaceous Chilean Iron Belt |  | | Journal (article/letter/editorial) | | example from the Paleoproterozoic Tanami orogenic gold province, northern Australia Nicholas G. Direen...revised form 1 May 2008 Accepted 20 May 2008 Keywords: Gold Magnetite Magnetics Paleoproterozoic Pyrrhotite...b s t r a c t Rocks associated with an orogenic gold system in the Paleoproterozoic Granites/Tanami Inlier...source(s) of the magnetic signature (e.g. Airo, 2002; Alva-Valdivia et al., 2003a,b). This is because these...Geological setting The Paleoproterozoic Tanami Orogenic gold province is located in The Granites/Tanami Inlier |  | | Journal (article/letter/editorial) | | enjoyed the hospitality of the Spanish commander Alva (successor to Quadra), and exchanged courtesies...board of the San Carlos guardship. Brigadier-General Alva and myself then met, agreeably to our instructions...Hudson Bay Company terminated. In consequence of the gold excitement in 1858, which brought thousands of miners...east, we have first the Kocky Mountains, then the Gold range, next the Coast range, and, finally, the Vancouver...and south-easterly direction. " The Vancouver and Gold ranges have many features in common in their auriferous |
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