Astrophyllite and Diaspore Physical Properties
Tenacity
Not Available
Very brittle
Solubility
Not Available
insoluble
Durability
Not Available
Not Available
Specific Gravity
3.2-3.4
3.30-3.40
Fracture
Uneven, Brittle, Metallic
Conchoidal, Brittle, Conchoidal
Cleavage
Perfect on [001] imperfect on [100]
{010} perfect, {110} distinct, {100} in traces
Chemical Composition
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Astrophyllite and Diaspore Chemical Formula
While comparing Astrophyllite and Diaspore 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 Diaspore 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 Diaspore- AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Astrophyllite and Diaspore Specific Gravity
Another important criteria for qualitative analysis of gemstones is Astrophyllite and Diaspore Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Astrophyllite and Diaspore Optical Properties during the identification of gemstone. Specific gravity of Astrophyllite is 3.30-3.40 whereas that of Diaspore is 3.30-3.40.