Typomorphic features of tourmalines of the Malkhan pegmatite field from the Irkutyanka vein

Larimar, a massive blue variety of the mineral pectolite, belonging to the wollastonite group of min

The mineral zoisite is a calcium alumosilicate belonging to the class of silicates, more exactly sor

Bohemian garnets, i.e., chromium-bearing pyropes, are found in several jewellery pieces from the Mig