Crysocola, cuprite, chalcopyrite, turquoise, malachite

One very aesthetic, cabinet size specimen of chrysocolla, turquoise, chalcopyrite, malachite, cuprite, and most likely several other secondary copper minerals, a product of crystallization due to water activities in the cracks in an old mine.

Chalcopyrite, quartz, pyrite and sphalerite

A beautiful cabinet specimen of sphalerite and chalcopyrite followed by pyrite, which corroded chalcopyrite by internal replacement, in some places breaking from inside mother chalcopyrite crystals. #1373

Quartz, pyrite, sphalerite-marmatite

One excellent, large cabinet size specimen of perfectly developed in space net transparent quartz crystals overgrowth by large black lustrous sphalerite- marmatite crystal and  small also very lustrous cubs of pyrite

Amethyst on rock crystal

One very aesthetic cabinet size specimen of perfectly developed amethyst crystal  overgrowth on colorless small quartz crystals.

Barite, quartz

One excellent miniature of brown-green barite crystals on white quartz. Barite is with  phantom in some places.

Fragment of transparent green spahlerite- cleophane convenient for faceting

 

Fragment of sphalerite- cleophane crystal with size 16 x 12,5 x 6 mm – weight 2,2 grams. The specimen is completely transparent, color is light green to yellow green and colorless in the center the color is spread in color zones. Internal space is clear of inclusions. Pictures are taken in reflected halogen light on white background.