Mangazeiskoe Sn-Ag deposit, Mangazeisky ore cluster, Western Verkhoyansk District, Verkhoyansk Silver Province, Verkhoyansk Fold Belt, Sakha, Russia

Very unusual colour variety of sphalerite. This sphalerite is completely iron-free and don't contain any other impurity than ~0.03 wt.% of Mn. This generation of sphalerite is the most later and low temperature on the locality. It fill fissures within alevrolite without any vein mineral (quartz, fluorite, calcite or any other). Specimen size is ...

© Pavel M. Kartashov collection & photo

White crust of microfibrous Mangazeite over surface of alevrolite from the type locality. FOV is ~2x1.7 cm. Author's specimen of G. M. Gamyanin - part of the holotype (author's number 243/4/465). Pavel M. Kartashov collection and photo.

© Pavel M. Kartashov collection & photo

Very unusual colour variety of cleiophane. This sphalerite is complete iron-free and don't contain any other impurity than ~0.03 wt.% of Mn. This generation of sphalerite is the most later and low temperature on the locality. It fill fissures within alevrolite without any vein mineral (quartz, fluorite, calcite or any other). FOV is ~2x2 cm. ...

© Pavel M. Kartashov collection & photo

White, granular aggregates of mangazeite on an analytical mount. A tiny portion of the holotype specimen from the author N. V. Chukanov. Purchased from Carsten Slotta/MinTreasure in 2024. Stack of 18 images.

© Andrew Hodgson