Formula: Ca2ZnBe(PO4)2(PO3OH) . 4H2O
Origin of name: For Howard Ehrle, American discoverer of mineral
Crystal system: Triclinic
Crystal class: -1
Twinning:
Unit cell:
Colour: White to colourless
Diaphaneity: Transparent
Luster: Vitreous
Habit: Crystals tabular to 0.1 x 2 x 2 mm
Hardness: 3.5
Specific gravity: 2.64
Cleavage: 1; {001} parting
Tenacity:
Streak: White
Synonyms/varieties:
Comments:
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