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Cassiterite
Virgem da Lapa, Jequitinhonha valley, Minas Gerais, Brazil
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18 x 17 x 10 mm overall
This rare pegmatitic Cassiterite from Brazil consists of many lustrous, nearly-metallic-looking, jet black crystals to 11 mm across. These Cassiterites are pristine, undamaged, and many of the crystals are twinned. Cassiterites of pegmatite origin are not common. This is a from a small 1960s find in Brazil by Ed Swoboda. It was held back by Ed for nearly 20 years, when I purchased it in the early 1990s for my personal collection. These are never seen on the market.
ex. Ed Swoboda specimen
Specimen # ES-01
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