The section of Sherlova Gora deposit, has major commercial importance. It is in the western part of the Sherlova Gora massif, near its contact with hornfelsed sedimentary rocks.
-bearing greisen veins Nos.1 and 2 have been known at the Podnebesny Mine since 1912.
Ref: E.Ya. Kievlenko, Geology of gems, 2003, p. 116