Annabergite and Astrophyllite Physical Properties
Tenacity
Sectile
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.07
3.2-3.4
Fracture
Brittle, Metallic, Brittle, Metallic, Brittle, Metallic
Uneven, Brittle, Metallic
Cleavage
Perfect on {010}, indistinct on {100} and {102}
Perfect on [001] imperfect on [100]
Chemical Composition
Ni3(AsO4)2•8(H2O)
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Annabergite and Astrophyllite Chemical Formula
While comparing Annabergite 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 Annabergite and Astrophyllite chemical formula.
- Chemical formula of Annabergite- Ni3(AsO4)2•8(H2O)
- Chemical formula of Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Annabergite and Astrophyllite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Annabergite and Astrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Annabergite and Astrophyllite Optical Properties during the identification of gemstone. Specific gravity of Annabergite is 3.2-3.4 whereas that of Astrophyllite is 3.2-3.4.