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VS
F
Fluorapophyllite-(Cs)
Name
—
CsCa₄(Si₈O₂₀)F(H₂O)₈
Formula
—
Mineral Species
Entry type
—
Silicates
Chemical class
—
Tetragonal
Crystal system
—
4.5–5
Mohs hardness
—
2.54
Specific gravity
—
White
Streak
—
Vitreous
Luster
—
Perfect
Cleavage
—
P4/nnc
Space group
—
Apophyllite
Structural group
—
Fapo-Cs · Approved
IMA
—
2019
Named in
—
Colorless
Typical colors
—
Cs · Ca · Si · O · F · H
Elements
—