VS
Name
—
PbCuFe³⁺(AsO₄)₂(OH)·H₂O
Formula
—
Mineral Species
Entry type
—
Arsenates
Chemical class
—
Triclinic
Crystal system
—
4.5
Mohs hardness
—
—
Specific gravity
—
Bright yellow
Streak
—
Chalky
Luster
—
Perfect on {111}
Cleavage
—
P-1
Space group
—
Helmutwinklerite
Structural group
—
Gtl · Approved
IMA
—
1988
Named in
—
Bright yellow, greenish yellow, green, brown; pale yellow in transmitted light
Typical colors
—
Pb · Cu · Fe · As · O · H
Elements
—