Open AccessPyrrhotite-troilite intergrowth from Luikonlahti copper deposit, eastern Finland
Author(s) -
A. Vorma
Publication year - 1970
Publication title -
bulletin of the geological society of finland
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 24
eISSN - 1799-4632
pISSN - 0367-5211
DOI - 10.17741/bgsf/42.001
Subject(s) - troilite , pyrrhotite , geology , geochemistry , copper , mining engineering , astrobiology , metallurgy , pyrite , materials science , physics , meteorite , chondrite
A homoaxial intergrowth of troilite with iron-deficient pyrrhotite, Fe0.921S, is described. X-ray single crystal study of the pyrrhotite component points to a superstructure with c = 11C and apparently to an orthorhombic symmetry. The intergrowth occurs on fissure walls in serpentinite rock as euhedral long-prismatic crystals; it apparently formed at a very low temperature. Possibly a simultaneous crystallization of troilite and iron-deficient pyrrhotite took place.
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