Astrophyllite and Cobaltite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.2-3.4
6.3
Fracture
Uneven, Brittle, Metallic
UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, Brittle, Metallic
Cleavage
Perfect on [001] imperfect on [100]
{100} Good, {010} Good, {001} Good
Chemical Composition
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
CoAsSAnthony et al , Handbook of mineralogy (2001)
Astrophyllite and Cobaltite Chemical Formula
While comparing Astrophyllite and Cobaltite 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 Cobaltite 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 Cobaltite- CoAsSAnthony et al , Handbook of mineralogy (2001)
Astrophyllite and Cobaltite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Astrophyllite and Cobaltite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Astrophyllite and Cobaltite Optical Properties during the identification of gemstone. Specific gravity of Astrophyllite is 6.3 whereas that of Cobaltite is 6.3.