Jirka Vodák
More ideas from Jirka
Český granat

Český granat

Slída

Slída

Sádrovec (CaSO4)

Sádrovec (CaSO4)

Azurit

Azurite, common in Europe and Asia, is produced by the weathering of copper ore deposits. It was crushed and powdered and used as a pigment from ancient times,

Malachit

Malachit

Dolomit

Dolomit

Kalcit (CaCoS3)

Kalcit (CaCoS3)

Hnědel (Limonit)

Hnědel (Limonit)