Formula: Ca2(Fe,Mn)FeSi5O14(OH)
Origin of name: For William Babington, Irish physician and mineralogist (1757-1833)
Crystal system: Triclinic
Crystal class: -1
Twinning:
Unit cell: a = 7.56 Ǻ, b = 12.45 Ǻ, c = 6.74 Ǻ, α = 86.2°, β = 93.9°, γ = 112.4°
Colour: Greenish black to brownish black
Diaphaneity: Opaque to faintly translucent
Luster: Vitreous
Habit: Crystals short prismatic or platy
Hardness: 5.5 to 6
Specific gravity: 3.36
Cleavage: 2; {001} perfect, {1-10} imperfect
Tenacity:
Streak:
Synonyms/varieties:
Comments: Series with manganbabingtonite. Found in veins cutting granite pegmatite and diorite, in cavities and vugs in mafic volcanic rocks and gneisses, in skarns.
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