The Lekbachschart area contains numerous Alpine type veins which contain quartz crystals,
adularia,
albite,
calcite,
rutile, and
anatase as well as diverse beryllium minerals (white and blue
beryl,
chrysoberyl,
phenakite,
gadolinite,
beryllian margarite,
bowenite,
bertrandite, and
milarite) and scheelite segregations.
Transparent yellow
phenakite crystals, up to 10 cm in length, occur with light-coloured
beryl and
emerald in lenses of biotite-chlorite rocks within talc schists.
Ref: E.Ya. Kievlenko, Geology of gems, 2003, p. 85
Gemstone List