Almandine and Annabergite Physical Properties
Tenacity
Not Available
Sectile
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.95-4.30
3.07
Fracture
Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Brittle, Metallic, Brittle, Metallic, Brittle, Metallic
Cleavage
none
Perfect on {010}, indistinct on {100} and {102}
Chemical Composition
Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Ni3(AsO4)2•8(H2O)
Almandine and Annabergite Chemical Formula
While comparing Almandine and Annabergite 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 Almandine and Annabergite chemical formula.
- Chemical formula of Almandine- Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
- Chemical formula of Annabergite- Ni3(AsO4)2•8(H2O)
Almandine and Annabergite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Almandine and Annabergite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Almandine and Annabergite Optical Properties during the identification of gemstone. Specific gravity of Almandine is 3.07 whereas that of Annabergite is 3.07.