Image Credit: Sharon Cisneros
Specimen Title
Galena
Principal Mineral
Size
Thumbnail; 29mm
Location in the Mine
Undetermined
Provenance
Feinglos, M.N.
Collection
Cisneros, S. & E.
Entry Number
Specimen; TSNB989
Description
A free-standing "spinel-twinned" crystal of galena, triangular in shape and measuring 20 mm across, on a crystallised galena matrix (with visually identified chalcocite (?) and tennantite subgroup (?)). The crystal has an etched appearance with fine striations typical of idiomorphic galena at Tsumeb and possibly related to stress-induced twinning (Ramdohr 1980).
The specimen is in the collection of Sharon and Eugene Cisneros and belonged formerly to Mark Feinglos.
