116.9g Rough Creedite with Cavern

Chakra: Crown, Third Eye, Throat, Etheric
Element: Storm
Known As: Stone of the Light
Planet: Venus, Jupiter, Neptune
Rarity: Rare
Resonant Number: 6
Zodiac: Virgo

Category: Halides
Chemical Formula: Ca₃SO₄Al₂F₈(OH)₂•2H₂O
Crystal Class: Prismatic
Crystal System: Monoclinic
Name: Creedite
Space Group: C2/c
Strunz Classification: 3.CG.15
Unit Cell: a = 13.91 Å, b = 8.58 Å, c = 10 Å; β = 94.4°; Z = 4

Birefringence: δ = 0.024
Cleavage: Perfect {100}
Common Colors: Colorless, Orange, Purple
Diaphaneity: Transparent to translucent
Fracture: Conchoidal
Luster: Vitreous
Mohs Hardness: 4
Optical Properties: Biaxial (-)
Refractive Index: nα = 1.461 nβ = 1.478 nγ = 1.485
Streak: White
Tenacity: Brittle