#31

Pmn2₁

Example – Enargite, Cu₃AsS₄

From the Greek έναργής for “distinct,” referring to its cleavage, which is perfect, in contrast to the chemically similar Tennantite, which, however, has no cleavage.

Strukturverfeinerung von Enargit, Cu₃AsS₄

Adiwidjaja G., Lohn J.
Acta Crystallographica B26 (1970) 1878-1879

http://www.mindat.org/min-1380.html

CIF
http://rruff.geo.arizona.edu/AMS/download.php?id=10372.cif&down=cif

CuS4 tetrahedra
AsS4 tetrahedra

3D rotatable model of Enargite

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