Formula: (Fe,Mg)Al2(PO4)2(OH)2
Origin of name: for E. Scorza, Brazilian mineralogist
Crystal system: monoclinic
Crystal class: 2/m
Twinning:
Unit cell: a = 7.157 Å, b = 7.302 Å, c = 7.248 Å, b = 120.6°
Colour: deep azure-blue to bluish green
Diaphaneity: subtranslucent
Luster: vitreous to dull
Habit: massive, compact to granular
Hardness: 5.5 to 6
Specific gravity: 3.38
Cleavage: 2; {110} indistinct to good, {101} indistinct
Tenacity:
Streak: white
Synonyms/varieties:
Comments:
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