VS
Name
—
Ca₃(Si,Fe³⁺,Al)(SO₄)B(OH)₄(OH,O)₆·12H₂O
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Hexagonal
Crystal system
—
2.5
Mohs hardness
—
1.895
Specific gravity
—
White
Streak
—
Dull
Luster
—
Perfect {100}
Cleavage
—
P31c
Space group
—
Ettringite
Structural group
—
Buy · Approved
IMA
—
2000
Named in
—
Light gray with a lilac tint
Typical colors
—
Ca · Si · Fe · Al · S · O · B · H
Elements
—