Mindat Short Description
Arsenopyrite Group.
For possible Ni-analogue see Unnamed (Ni,Fe,Co)AsS; see also Unnamed (Ni Arsenide Sulphide). Arsenopyrite is closely related to alloclasite, but is not an exact analogue, because of different As-S and S-As ordering.
Arsenopyri...
Geoscience Ontology Status Notes
The mineral was known before this publication, but under other names, such as mispickel: Glocker E F (1847) Ordo VI. Pyritae. Pyrite. III. Pyritae arsenopyritoidei. 10. Arsenopyrites., in Generum et Specierum Mineralium, Secundum Ordines Naturales Digestorum Synopsis, Apud Eduardum Anton 34-43
IMA Formula (from Mindat)
FeAsS
RRUFF Formula (from Geoscience Ontology)
Fe3+(AsS)3-