Fluorite and Astrophyllite Physical Properties
Tenacity
Brittle
Not Available
Solubility
slightly water soluble and in hot hydrochloric acid
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.00-3.25
3.2-3.4
Fracture
Subconchoidal, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Uneven, Brittle, Metallic
Cleavage
Octahedral, perfect on {111}, parting on {011}
Perfect on [001] imperfect on [100]
Chemical Composition
CaF2
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Fluorite and Astrophyllite Chemical Formula
While comparing Fluorite and Astrophyllite 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 Fluorite and Astrophyllite chemical formula.
- Chemical formula of Fluorite- CaF2
- Chemical formula of Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Fluorite and Astrophyllite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Fluorite and Astrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Fluorite and Astrophyllite Optical Properties during the identification of gemstone. Specific gravity of Fluorite is 3.2-3.4 whereas that of Astrophyllite is 3.2-3.4.