 | | Journal (issue) | | TourmalineGolconda mine, Minas Gerais, Brazil SHOWS r Houston-Se.9-11 Bisbee - Oct. 9-12 Detroit - Oct...T°LOSANct ,Ccmine, Phoenixville, Pa. Hours: Wed-Sat. 10-5 Sunday...other minerals from near Vitoria da Conquista (Brazil)................................382 by Jacques...rhodochrosite, âW olfâ mine, Herdorf, Siegerland, brown pyromorphite, âFriedrichssegenâ mine, Bad Ems; brilliant...manganite, Ilfeld, Sax ony; stephanite, âHimmelsfurstâ mine, Freiberg, Saxony; proustite, Niederschlema near |  | | Book | | Occurrence: The Americas 63 USA 64 Mexico 72 Panama 75 Brazil 75 Canada 80 7 Occurrence: Rest of the world 81...553 0.009 0.013 2.651 7 2.58-2.64 61/z Chalcedony 1.53-1.54 QUARTZ Varieties Habit Pleochroism...almost all rock types and in most countries. CHALCEDONY Agate (light to dark colours in concentric bands...bloodstone (dark green with red flecks, opaque), chalcedony (grey or blue without banding, translucent; a...quartz crystals come from the State of Minas Gerais, Brazil, and occur in vugs or pockets which are found in |  | | Book | | 58 58 Almandite 78 Catâs-Eye 79 Ceylonite 80 Chalcedony 80 Charoite 80 Chiastolite 81 Chloromelanite...minerals were densely con- centrated. This type of mine was very at- tractive, since it avoided the need...materials Quartz crystals from Corinto, Minas Gerais, Brazil. Height: 15 cm. Sorbonne collection using gravity...Washing diamond-bearing gravel in Minas Gerais, Brazil. Photo: tals of such minerals as quartz, fluorite...and a jeweler might then speak of a ârootâ as Brazil Length: 9 cm. K. Proctor collection, United States |  | | Journal (issue) | | Conquista, Brazil.) Revue de Gemmologie, 1976, 47, 6-9. The area described lies in the state of Bahia and contains...contains the mines Fazenda Joanina, Coruja, Baixinha and Montezuma. Typical crystals from these mines...corundum; while a melon-cut (ribbed oval cabochon) "chalcedony" proved to be a Ceylon sapphire. Green enamel...inclusions in diamonds from several localities in Brazil ; this is the first record of ilmenite and zircon...Pauline M., Newbury. Preckler, Joseph C , Ouro Preto, Brazil. Reynolds, John P., Sherborne. 223 Roberts, Atie |  | Hodges, C.A., Cox, D.P., Singer, D.A., Case, J.E., Berger, B.R., Albers, J.P. (1984) U.S. Geological Survey-INGEOMINAS mineral resource assessment of Colombia. Open-File Report Vol. 1984 (84-345) US Geological Survey doi:10.3133/ofr84345 | Report (issue) | | deposits of such minerals in adjacent areas of Brazil and Venezuela suggest that eastern Colombia may...deposits, based on analogy with adjacent areas in Brazil and Venezuela. An initial reconnaissance should...Placers magnetiteilmenlte-chroBite, PGE, gold (6.3) Bahia Solano Reach sands, alluvial deposits Marine basalt...is continental or transitional Skarn Cu (2.6) Mine Vlejs Los Guayabas (Tollma) Cranates (Hulla) Also...Cty, CA Santa Helena, Antioquia, Colombia Co to Mine, Luzan, P.I. References Wells, F. G. et al 1946 |  | | Book | | On a spectacular find of crocoite in the Adelaide mine, Dundas, Tasmania (by A. H. Chapman) 3:111-113 ADOLFSSON...AJO Famous mineral localities: the New Cornelia mine, Ajo, Arizona (by W. J. Thomas & R. B. Gibbs) 14:283-298...ALLEN, GEORGE B. --and W. Hunt: The Tonopah-Belmont mine, Maricopa County, Arizona 19:139-144 ALLGOOD, GENNE...Allgood, C. Williams: Ramsdellite from the Mistake mine [Arizona] 14:333-335 ALLGOOD, ROBERT W. -with G...the Mistake mine [Arizona] 14:333-335 ALMA Famous mineral localities: the Home Sweet Home mine, [near Alma |  | | Report (volume) | | based on considerations that extend far beyond the mine itself, in some instances relating to the overall...subject, as in a scale model of the workings of a mine, to a unifying concept that explains or describes...government believed might someday be economic ta mine. Stratiform deposits of large areal extent, such...EXAMPLES High Plateau, Del Norte Cty, USCA Coto Mine, Luzon, PLPN (Wells and others, 1946) (LeBlanc...DEPOSITS Name Ace of Spades Adobe Canyon Gp. Ajax Alice Mine Allan (Johnson) Alta Hill Althouse Alyce and Blue |  | | Book | | Springfield show ( 1995: 582). Madawaska [Faraday] mine near Bow Lake, Hastings County. Some of the world's...property of, the old Madawaska uranium mine (called the Faraday mine before 1964). The mineral assemblage...Trimble and Cowgill, 1977). LATINAMERICA BRAZIL Jacupiranga mine, Sao Paulo. Among the crystallized minerals...Oblast. Alpine-type clefts in the famous Dodo quartz mine commonly contain ilmenite, occurring as lustrous...ilmenite crystals as described here for the Dodo mine. In general, ilmenite crystals from the Subpolar |
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