Formula: Mn5(PO4)2(OH)4
Origin of name: For Bryan Gatehouse, Australian chemist
Crystal system: Orthorhombic
Crystal class: 222
Twinning:
Unit cell:
Colour: Pale yellow, yellow to pale brownish orange
Diaphaneity: Transparent
Luster: Adamantine
Habit: Bladed, radiating to divergent, to 100 µm
Hardness: 4
Specific gravity: 3.74
Cleavage: 1; {010} distinct
Tenacity:
Streak: Pale yellow
Synonyms/varieties:
Comments:
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