Arsenopalladinite

Formula:  Pd₈(As, Sb)₃

Origin of name:  from composition

Crystal system:  Triclinic

Crystal class:  1

Twinning:

Unit cell: a = 7.43 Å, b = 13.95 Å, c = 7.35 Å, a = 92°53', b = 119°30', g = 87°51'

Colour:  Silver white, slight yellowish tint

Diaphaneity: Opaque

Luster:  Metallic

Habit:  Small grains with polysynthetic twinning

Hardness: 4

Specific gravity:  10.4

Cleavage:  None

Tenacity: Malleable

Streak:

Synonyms/varieties:

Comments: Found in gold concentrates, alluvial placers and ultra-basic intrusions