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$89.00
& FREE ShippingThis sherbet colored cluster features a beautiful mingling of green Apophyllite and peach Stillbite crystal clusters. It's flattened on the long edge so that it may be displayed upright, but it also rests nicely on it's natural matrix.
Stone of Truth
Category:
Phyllosilicate
Crystal System:
Tetragonal - Ditetragonal Dipyramidal
Dana Classification:
72.03.01.00
Empirical Formula:
KCa4Si8O20(F, OH)•8H2O
Name:
Apophyllite
Space Group:
P 4/mnc
Strunz Classification:
09.EA.15
Cleavage: {001} Perfect
Common Colors: White, Pink, Green, Yellow, Violet
Crystal Habit: Crystalline, Massiev, Pseudo Cubic
Diaphaneity: Transparent, Translucent
Formula Mass: 907.20 gm
Fracture: Uneven
Luster: Vitreous, Pearly
Mohs Hardness: 4.5 - 5
Pleochroism: Dichroic
Refractive Index: 1.536
Streak: White
Chemical Formula:
(Na, Ca, K)6-7[Al8-9Si27-28O72]•nH2O
Crystal Class:
Prismatic
Crystal System:
Orthorhombic
Name:
Stillbite
Common Colors: Colorless, White
Mohs Hardness: 3.5 - 4