VS
Name
—
K₄Cu₄OCl₁₀
Formula
—
Mineral Species
Entry type
—
Halides
Chemical class
—
Monoclinic
Crystal system
—
2.8
Mohs hardness
—
2.78
Specific gravity
—
Red-orange
Streak
—
Vitreous, resinous to greasy in aggregates
Luster
—
Imperfect on {001} and {110}
Cleavage
—
C2/c
Space group
—
—
Structural group
—
Pon · Approved
IMA
—
1986
Named in
—
Brick-red with a golden tint, dark red, black, probably due to admixed molysite
Typical colors
—
K · Cu · O · Cl
Elements
—