Formula: CaMg4(AsO3)2F4
Origin of name: after locality Nan Ling, China
Crystal system: hexagonal
Crystal class: 3m or -3 2/m
Twinning:
Unit cell:
Colour: reddish brown, dark brown on oxidised surfaces
Diaphaneity:
Luster: vitreous
Habit: crystals subhedral to euhedral, 0.1 to 2 mm, dendritic aggregates
Hardness: about 2.5
Specific gravity: 3.93
Cleavage: none
Tenacity:
Streak: pale yellow
Synonyms/varieties:
Comments:
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