Čadavec z ortoklazom

**Čadavec z ortoklazom** Minerali v pegmatitih so pogosto vir kovin, nekovin in plemenitih kamnov. Skupek kristalov čadavca in ortoklaza iz pegmatitnih žil v Papachacri v Argentini je Prirodoslovnemu muzeju Slovenije donirala gospa Vida Sotiropulos. Zbirka Prirodoslovnega muzeja Slovenije. **Smoky quartz** Minerals in pegmatites are frequently a source of metals, non-metals and precious stones. A set of smoky quartz and orthoclase crystals from pegmatite veins in Papachacra, Argentina, was donated to the Slovenian Museum of Natural History by Mrs Vida Sotiropulos. Collection of the Slovenian Museum of Natural History.