| are field trips to the world-famous Pala gem pegmatite district in San Diego County. These excursions...Cuts Rhodizite-Londonite from the Antsongombato Pegmatite, Central Madagascar Summer 2004 Gem Treatment...are mined from a weathered pegmatite in Meetiyagoda and in situ chrysoberyl from Pattara, no other commercially...carvings, as has similar material from a lepidolite pegmatite at Ro`źná, Czech Republic. A cabochon of reddish...rose quartz and reportedly came from an undisclosed pegmatite in Minas Gerais State. In light of its attractive |
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(2022, May) Eureka! Self-Collected Minerals. The Mineralogical Record Vol. 53 (3.1) The Mineralogical Record, Inc. |
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| experiencing one of North America’s greatest pegmatite tourmaline discoveries. Excerpts from his journal...of Pitt Pulsifer. Pulsifer had discovered the pegmatite on his property in 1901, and broke into a pocket...were able to locate an unmined portion of the pegmatite vein and set to work on it. Terry described the...Quartz, 9 cm, from an artisanal kaolin-producing pegmatite, Vila Remo, São Paulo, Brazil; collected in 1964...Rubellite tourmaline, 11 cm, from the Peccicacco pegmatite, Perus, Brazil; collected in 1987. Uranophane-ß |
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(1976, November) Jewelry Making, Gems and Minerals 469. American Federation of Mineralogical Societies |
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| colored rock formations lacing the mountain are pegmatite dikes. The white area at the upper left of the...specimens that may be found within one pegmatite . The Virgem de Lapa pegmatite in Minas Gerais, Brazil has produced...of crystals and all from within one continuous pegmatite formation. Similarly one might tend to think that...may occur abundantly as a basic component of pegmatite dikes over a wide area, such as in the Black Hills...usually associate the occurrence of tourmaline with pegmatite dikes, coarse to fine intrusive igneous materials |
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