Sphalerite (var. Marmatite) - image 1

Sphalerite (var. Marmatite)

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Plate covered with very bright black pyramidal sphalerite crystals showing the typical twinning of the species. Some cubic streaked pyrite crystals (the largest one measuring 1.9 cm) are interspersed with the sphalerite and small quartz crystals are also found on the plate.

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