VS
Name
—
Ca₄Si₆O₁₇(H₂O)₂·(Ca·3H₂O)
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Triclinic
Crystal system
—
2.5
Mohs hardness
—
2.42–2.46
Specific gravity
—
—
Streak
—
Vitreous, silky in fibrous aggregates
Luster
—
Perfect on {001}, imperfect on {100}
Cleavage
—
C-1
Space group
—
Tobermorite
Structural group
—
Tbm · Approved
IMA
—
1882
Named in
—
Pale pinkish white, white, brown; colorless in thin section
Typical colors
—
Ca · Si · O · H
Elements
—