Formula: (Y,Ce,Nd,Ca)Cu6(PO4)3(OH)6.3H2O
Origin of name: for T. and J. Peters, American mineral curators
Crystal system: hexagonal
Crystal class: 6 or 6/m
Twinning:
Unit cell:
Colour: yellow-green
Diaphaneity:
Luster: vitreous
Habit: crystals prismatic, hexagonal, less than 0.1 mm in radiating clusters and sprays
Hardness:
Specific gravity: 3.41
Cleavage: none
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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