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VS
Bartonite
Name
—
K₆Fe₂₀S₂₆S
Formula
—
Mineral Species
Entry type
—
Sulfides
Chemical class
—
Tetragonal
Crystal system
—
3.5
Mohs hardness
—
3.305
Specific gravity
—
Black
Streak
—
Submetallic
Luster
—
{112}, distinct
Cleavage
—
I4/mmm
Space group
—
Djerfisherite
Structural group
—
Btn · Approved
IMA
—
1977
Named in
—
Blackish brown; in polished section, yellowish green-gray to yellowish green-brown
Typical colors
—
K · Fe · S
Elements
—