Astrophyllite and Dolomite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Poorly soluble in dilute HCl
Durability
Not Available
Not Available
Specific Gravity
3.2-3.4
2.80-2.95
Fracture
Uneven, Brittle, Metallic
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
Perfect on [001] imperfect on [100]
Perfect on {10 1 1}, rhombohedral cleavage
Chemical Composition
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
CaMg(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Astrophyllite and Dolomite Chemical Formula
While comparing Astrophyllite and Dolomite 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 Astrophyllite and Dolomite chemical formula.
- Chemical formula of Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
- Chemical formula of Dolomite- CaMg(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Astrophyllite and Dolomite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Astrophyllite and Dolomite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Astrophyllite and Dolomite Optical Properties during the identification of gemstone. Specific gravity of Astrophyllite is 2.80-2.95 whereas that of Dolomite is 2.80-2.95.