Calcite, Marcasite

Unknown Owner

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Talk about cool; this is a BIG specimen of glittery golden-green marcasite that has formed a dome over massive sphalerite, crowned by a cluster of transparent, disc-shaped calcite crystals! In person, the calcites are clear to very slightly yellow (not pinkish as the camera seemed to make them). This is a large, dramatic old Shullsberg specimen! 15.5 x 10 x 6.2 cm