Mineral: Sphalerite (variety cleiophane) Quartz
Locality: Krushev dol Mine, Madan mining area, Rhodope Mountains, Smolyan Oblast, Bulgaria
Dimensions: 6 x 5 x 3,5 cm.

Description: Cleiophane is colorless to white or green sphalerite due to low contents of Fe2+ and Mn2+. Beautiful cleiophane crystals on the white quartz druze. Added in collection in 2023.

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