For #MineralMonday
Ozocerite, a naturally-occurring odoriferous mineral wax or paraffin.
Chemically, ozokerite consists of a mixture of various hydrocarbons, mostly alkanes: CnH2n+2 n=20<40

This specimen is from Boryslav, Drohobych Raion, Ukraine
#ozocerite #ukraineminerals #boryslav