Formula: CeAl3(PO4)2(OH)6
Origin of name: For W. Florence, Brazilian mineralogist
Crystal system: Hexagonal
Crystal class: -3 2/m
Twinning:
Unit cell: a = 6.96 Ǻ, c = 16.33 Ǻ
Colour: Pink, pale yellow
Diaphaneity: Transparent to translucent
Luster: Resinous to greasy
Habit: Crystals rhombohedral or pseudocubic; small, rounded grains, submicroscopic
Hardness: 5 to 6
Specific gravity: 3.46 to 3.
Cleavage: 2; {0001} good, {11-20} traces
Tenacity:
Streak:
Synonyms/varieties:
Comments: Three distinct species with the extensions -(Ce), -(La) and -(Nd) indicating the predominent rare earth cation in the formula.
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