Centre for Russian and Central EurAsian Mineral Studies (CERCAMS)

Snowball-textured quartz crystals in amazonite granite from the Etyka tantalum deposit, Transbaikalia, Russia

Line rock textured layered pegmatite-aplite zone within amazonite granite from the Etyka tantalum deposit, Transbaikalia, Russia

Molybdenum stockwork ore from the Kounrad Cu-Mo porphyry, Kazakhstan

Banded metasomatite from the Muruntau giant gold deposit, Uzbekistan

Skarn specimen from the Jilau gold deposit, Tajikistan
(sample courtesy of Andy Cole, photograph: Mike Savage, NHM)

Stockwork specimen from the Jilau gold deposit, Tajikistan
(sample courtesy of Andy Cole, photograph: Mike Savage, NHM)