Formula: CaFeH6(MoO4)4(PO4) . 6H2O
Origin of name: For V. Melkov, Russian mineralogist
Crystal system: Monoclinic probable
Crystal class: m
Twinning:
Unit cell:
Colour: Lemon-yellow to brownish yellow
Diaphaneity:
Luster: Dull to waxy
Habit: Platy crystals 0.001 - 0.002 mm in powdery films and veinlets
Hardness: ~ 3
Specific gravity: 2.971
Cleavage: 1; perfect
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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