Formula: Mg6Fe(CO3)(OH)13 . 4H2O
Origin of name: For L. Brugnatelli, Italian chemist
Crystal system: Hexagonal
Crystal class: 6/m 2/m 2/m
Twinning:
Unit cell:
Colour: Yellowish pink to yellowish, brownish white
Diaphaneity: Transparent to translucent
Luster: Pearly
Habit: Massive, foliated or lamellar
Hardness: ~ 2
Specific gravity: 2.14
Cleavage: 1; {0001} perfect
Tenacity:
Streak: White
Synonyms/varieties:
Comments:
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