Formula: LiFePO4
Origin of name: from Greek for three and family
Crystal system: orthorhombic
Crystal class: 2/m 2/m 2/m
Twinning:
Unit cell: a = 6.019 Å, b = 11.35 Å, c = 4.704 Å
Colour: greenish gray, bluish gray, surface alters brownish to blackish
Diaphaneity:
Luster: resinous to vitreous
Habit: crystals stout prismatic, rare, faces often rounded or rough, massive, cleavable
Hardness: 4 to 5
Specific gravity: 3.42
Cleavage: 3; {100} nearly perfect, {010} imperfect, {011} interrupted
Tenacity: subconchoidal to uneven
Streak: colourless to dirty white
Synonyms/varieties:
Comments: series with lithiophilite
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