Formula: Ca3Fe10(PO4)8(OH,F)12.nH2O
Origin of name: after loclity Richelle, Liege, Belgium
Crystal system: tetragonal
Crystal class: 4
Twinning:
Unit cell:
Colour: yellowish to reddish brown
Diaphaneity:
Luster: greasy to horn-like
Habit: massive, compact or foliated, globular, radial fibrous structure
Hardness: 2 to 3
Specific gravity: about 2.0
Cleavage: none
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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