Ettringite and Fluorite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Partially soluble in water
slightly water soluble and in hot hydrochloric acid
Durability
Not Available
Not Available
Specific Gravity
1.77
3.00-3.25
Fracture
Not Available
Subconchoidal, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Cleavage
Perfect on {10 1 0}
Octahedral, perfect on {111}, parting on {011}
Chemical Composition
Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
CaF2
Ettringite and Fluorite Chemical Formula
While comparing Ettringite and Fluorite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Ettringite and Fluorite chemical formula.
- Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Fluorite- CaF2
Ettringite and Fluorite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Ettringite and Fluorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ettringite and Fluorite Optical Properties during the identification of gemstone. Specific gravity of Ettringite is 3.00-3.25 whereas that of Fluorite is 3.00-3.25.