VS
Name
—
Ca₄MgB₄O₆(CO₃)₂(OH)₆
Formula
—
Mineral Species
Entry type
—
Borates
Chemical class
—
Monoclinic
Crystal system
—
4–4.5
Mohs hardness
—
2.56–2.77
Specific gravity
—
—
Streak
—
Vitreous, slightly pearly on cleavages
Luster
—
Perfect on {100} and {110}; others on {hkl} and {h0l}
Cleavage
—
C2/m
Space group
—
—
Structural group
—
Bcr · Approved
IMA
—
1965
Named in
—
Greenish blue to bluish green, pale brown, may be nearly colorless; colorless in thin section
Typical colors
—
Ca · Mg · B · O · C · H
Elements
—