VS
Name
—
(Ca,Na,K)₅(Si₂₇Al₉)O₇₂·26H₂O
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Monoclinic
Crystal system
—
3.5–4
Mohs hardness
—
—
Specific gravity
—
white
Streak
—
vitreous
Luster
—
—
Cleavage
—
C2/m
Space group
—
Heulandite
Structural group
—
Hul-Ca · Approved
IMA
—
1822
Named in
—
White, Pink, Red, Colorless, Orange, Yellow
Typical colors
—
Ca · Na · K · Si · Al · O · H
Elements
—