Formula: (Zn,Fe,Mn)TiO3
Origin of name: For Ernest C. Andrews, Australian geologist
Crystal system: Hexagonal
Crystal class: -3
Twinning:
Unit cell:
Colour: Dark brown to black
Diaphaneity:
Luster: Submetallic
Habit: Euhedral tabular grains to 50 x 150 µm
Hardness: 5.5
Specific gravity:
Cleavage: None
Tenacity:
Streak: Dark brown to black
Synonyms/varieties:
Comments: Zn analogue of ilmenite
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