Formula: Ba(CrO4,SO4)
Origin of name: After locality; Hashem region, near Amman, Jordan
Crystal system: Orthorhombic
Crystal class: 2/m 2/m 2/m
Twinning:
Unit cell: a = 9.1028, b = 5.5276, c = 7.3314
Colour: Dark green-brown to light yellow-brown
Diaphaneity: Transparent to translucent
Luster: Adamantine
Habit: Crystals stubby, double terminated, tiny
Hardness: 3.5
Specific gravity: 4.59
Cleavage: None
Tenacity:
Streak: Brownish white
Synonyms/varieties:
Comments:
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