Calcite
Druse of scalenohedral calcite crystals on which younger calcite with prismatic development is growing from one direction.
Calcite, pyrite
Scalenohedral calcite crystals 2 to 3 cm large overgrown on one side with second-generation calcite with a prismatic habit and […]
Calcite
Scalenohedral calcite crystals up to 2 cm large overgrown by younger, smaller, hypoparallel-grown crystals. The sample is further complemented by […]
Strontianite
Yellowish bladed aggregates of strontianite in white baryte. The length of the aggregate is 5 cm. The specimen comes from […]
Hydrocerussite, lead
Dolomite
Druse of unusually shaped dolomite crystals up to 12 mm large.
Malachite
Needle-like aggregates of Malachite with golden grains of Chalcopyrite in quartz rock.
Malachite
Fibrous aggregate of green Malachite.
Malachite
Partially polished botryoidal aggregates of dark green Malachite.
Aragonite
Kidney-shaped aggregates of yellow aragonite colored by the content of uranium. The specimen is glowing under UV light .
Calcite
Druse of clear transparent scalenohedral calcite crystals up to 2.5 cm in size from a Krkonoše locality.
Quartz, calcite
Drúza bílých drobných krystalů kalcitu s krychlovým pyritem ze které vyrůstá 12 mm velká srostlice dokonale omezených krystalů čirého křemene […]