NJG52-3-05
1972
Naumannite from Kongsberg silver deposit, south Norway. Contribution to the mineralogy of Norway, no. 50
52
3
273-285

Naumannite (Ag2Se) is described from a mine - Johannes Gruve - in the Kongsberg silver district of south Norway. Physical data and chemical analysis are given. Single crystal work decides an orthorhombic symmetry, and the cell parameters and a list of indexed d-values are presented. The mineral shows invertion twins. The naumannite-chalcopyrite-quartz-calcite paragenesis is formed by fracture filling.

0029-196X
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