Formula: (Ca,Na)3(Mn,Mg)2(AsO4)3
Origin of name: From manganese and berzeliite
Crystal system: Cubic
Crystal class: 4/m -3 2/m
Twinning:
Unit cell:
Colour: Yellow to orange, honey-yellow, orange-yellow, yellowish red
Diaphaneity: Transparent to translucent
Luster: Resinous
Habit: Crystals trapezohedrons, minute, rare; massive; rounded grains
Hardness: 4.5 to 5
Specific gravity: 4.21
Cleavage: None
Tenacity:
Streak:
Synonyms/varieties:
Comments: Series with berzeliite; atomic structure similar to garnet
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