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Measurements: 110 x 90 x 70 mm Description: A group of schorl crystals with the biggest one having lovely termination facets. The specimen displays well on a flat surface, at a slight angle. Some small bits of white feldspar attached. Relatively little damage, only a few nicks and contact marks at the bottom. Weight of Specimen: 672 g Chemical
Composition: NaFe2+3Al6Si6O18(BO3)3(OH)4
Hardness
on Mohs Scale: 7.5 Location: Specimen
Code: NAM
004 .. . . .
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