Formula: Na2Fe(SO4)2(OH) . H2O
Origin of name: From Greek meta - after and sideronatrite
Crystal system: Orthorhombic
Crystal class: 222
Twinning:
Unit cell:
Colour: Golden yellow to straw-yellow
Diaphaneity:
Luster: Silky
Habit: Crystals prismatic, rare; coarse to fine crystalline aggregates
Hardness: 2.5
Specific gravity: 2.68
Cleavage: 3; {100} and {010} perfect, {001} distinct
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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