Chalcopyrite, sphalerite-marmatite, quartz and pyrite

One very interesting, strongly weathered, large cabinet-size specimen of black sphalerite-marmatite and quartz, covered by very well-developed chalcopyrite crystals, lately internally corroded and replaced by pyrite.

Limonite quartz

One very aesthetic cabinet-size specimen of transparent quartz crystals in the upper part covered by limonite.

Epidote with manganocalcite

#554
One very rare aesthetic specimen of needle epidote crystals, overgrowth by nice pink manganocalcite
Dzhurkovo mine, Laki, Bulgaria
size 57 x 45 x 20 mm
A perfect specimen of isometric transparent green sphalerite- cleophane crystals, developed on quartz.
Krushev dol mine, Madan, Rhodope mountains, Bulgaria