Formula: (Na,Ca)3(Ba,Sr,Ce,Ca)3(CO3)5
Origin of name: From locality; Khanneshin, Afghanistan
Crystal system: Hexagonal
Crystal class: 6mm
Twinning:
Unit cell:
Colour: Pale yellowish
Diaphaneity:
Luster:
Habit: Crystals prismatic, elongated
Hardness: 1
Specific gravity: 3.8 to 3.9
Cleavage: 2; Indistinct parallel to elongation, one parting
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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