Millerite.
Nickel sulfide needles from the 5th floor of the Prokop vein.
Diaphorite
An extremely large (13 millimeters long), crystal of the rare silver sulfosalt – diaphorite. The crystal is incomplete on the […]
Sternbergit
Metallic, bronze-looking Sternbergite crystals on a massive Proustit. The largest crystal is about 0.5 mm big. Jáchymov is the type […]
Xantokon, Sternbergit, Proustit
A mineralogically very interesting combination of intense red proustit crystals with rare orange Xanthocon and black shiny plates of Sternbergite. […]
Zeophyllite
Three centimeters large cavity filled with fan-like aggregates of pearly lustrous Zeofylit. Velké Březno is the type locality for Zeofylit.
Kettnerite
Plates of the rare mineral kettnerite covered with brown hematite. Krupka is the type locality for this mineral.
Kettnerite
Plates of the rare mineral kettnerite covered with brown hematite. Krupka is the type locality for this mineral.
Phenakite
A crystal of colorless translucent beryllium silicate – phenakite from one side terminated by a prism. Malyševo is a type […]
Kulanite
Glossy Kulanite crystals with zonal green-blue coloring with Rock Crystal and beige Siderite crystals. The largest Kulanite crystal is 7 […]
Pachnolite
Fine slatted crystals of the rare mineral pachnolite grown in cubic pseudomorphs after cryolite. The specimen is from the type […]
Perroudite
Tiny orange-red crystalline aggregates of the extremely rare sulfide of unusual composition Hg5Ag4S5(I,Br)2Cl2 from the type locality Cap Garrone.
Línekit, braunerit.
Yellow tabular crystals of the very rare minerals línekite (square) and braunerite (hexagonal) from the type locality Jáchymov.