Formula: Na3Fe(SO4)3 . 3H2O
Origin of name: From ferric iron (Fe3+) and sodium (Latin natrium, Na)
Crystal system: Hexagonal
Crystal class: -3
Twinning:
Unit cell:
Colour: Grayish white, pale green to bluish green, purplish, colourless
Diaphaneity: Transparent
Luster: Vitreous
Habit: Crystals short prismatic; fibrous aggregates, cleavable masses, cryptocrystalline
Hardness: 2.5
Specific gravity: 2.55 to 2.61
Cleavage: 2; {10-10} perfect, {11-20} less perfect
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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