Formula: Ti(Zn,Mg,Fe)2Al8O15(OH)
Origin of name: Named as the zinc dominant mineral and 2N2S member of polysomatic series of the högbomite group (originally described as zincohögbomite-8H)
Crystal system: Hexagonal
Crystal class: 6mm
Twinning:
Unit cell: a = 5.708 Å, c = 18.31 Å
Colour: Deep brown, black
Diaphaneity: Translucent to opaque
Luster: Adamantine
Habit: Euhedral crystals, pseudo tetragonal
Hardness: 7
Specific gravity: 4.31 (calculated), 4.36 (measured)
Cleavage: None observed
Tenacity: Conchoidal fracture
Streak: Brownish
Synonyms/varieties: zincohögbomite-8H
Comments:
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