Formula: NaCa5H4(AsO4)5 . 4H2O
Origin of name: For Elizabeth McNear, Swiss mineralogist
Crystal system: Triclinic
Crystal class: 1 or -1
Twinning:
Unit cell:
Colour: White
Diaphaneity:
Luster: Pearly
Habit: Radiating fibres, 1~ 2 mm
Hardness:
Specific gravity: 2.60
Cleavage: 1; Perfect parallel to elongation
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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