 | | Catalog/List | | In the early 1980s Rock began to concentrate on Brazil and Peru with occasional trips to Uruguay, Chile...Project. Another was the 7,500+ quartz in Minas Gerais, Brazil: a micromount collection. And of course..............................................196 Brazil.................................................. 2019 | 11:00 AM CT 21 72013 Cerussite on Pyrolusite (?) Campbell Shaft, Bisbee, Warren District,...cerussite crystals growing on botryoidal black pyrolusite? I bought this specimen from John Sinkankas. |  | | Catalog/List | | listing a specimen as being from “Nevada” or “Minas Gerais.” The situation has not markedly improved with...MAGNESITE Brumado (Bom Jesus dos Meiras), Bahia, Brazil As prevalent as Magnesium Carbonate is in the rocks...five or less localities is the deposit at Brumado, Brazil, where well-formed and transparent crystals are...Estimate: $8,500-$9,500 52054 MANGANOTANTALITE Minas Gerais, Brazil Everybody has become acquainted with the...Manganotantalite) is from the conflict-free country of Brazil. Bidders can rest easy now. This luscious little |  | | Journal (issue) | | Olson collections; Jeff Scovil photo. Pyrolusite Mn41O2 Pyrolusite typically occurs as black powdery coatings...with manganite or independently. Post-mining pyrolusite coatings on rocks, rails and timbers were often...Manganite Marcasite Minnesotaite Neotocite Pyrite Pyrolusite Quartz Rhodochrosite Romanèchite Siderite Stilpnomelane...Branco mine, Sapucaia do Norte, Galiléia, Minas Gerais, Brazil. Wildfang Collection; James Elliott photo...the Corrego Frio mine, Linópolis, Divino das Laranjeiras, Minas Gerais, Brazil. Wildfang Collection; Anton |
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