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VS
Decrespignyite-(Y)
Name
—
Y₄Cu(CO₃)₄Cl(OH)₅·2H₂O
Formula
—
Mineral Species
Entry type
—
Carbonates
Chemical class
—
Monoclinic
Crystal system
—
4
Mohs hardness
—
3.64
Specific gravity
—
Pale blue
Streak
—
Vitreous to pearly
Luster
—
—
Cleavage
—
—
Space group
—
—
Structural group
—
Dcp-Y · Approved
IMA
—
2001
Named in
—
Deep Royal blue to turquoise-blue; very pale blue in transmitted light
Typical colors
—
Y · Cu · C · O · Cl · H
Elements
—