VS
Name
—
Pb₃Mn²⁺(AsO₃)₂(AsO₂OH)
Formula
—
Mineral Species
Entry type
—
Arsenates
Chemical class
—
Monoclinic
Crystal system
—
2–3
Mohs hardness
—
6.1–7.1
Specific gravity
—
—
Streak
—
Vitreous to adamantine
Luster
—
{010}, perfect; {101}, good
Cleavage
—
Pn
Space group
—
—
Structural group
—
Tgn · Grandfathered
IMA
—
1920
Named in
—
Sulfur-yellow to yellowish brown, dark brown; pale yellow to brownish yellow in transmitted light
Typical colors
—
Pb · Mn · As · O · H
Elements
—