Malachite and Almandine Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.25-4.10
3.95-4.30
Fracture
Conchoidal, Conchoidal, Gemstones (2009), Uneven
Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
Perfect on { 2 01} fair on {010}
none
Mohs Hardness
3.5-4
7-7.5
Chemical Composition
Cu2CO3(OH)2
Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Malachite and Almandine Chemical Formula
While comparing Malachite and Almandine 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 Malachite and Almandine chemical formula.
- Chemical formula of Malachite- Cu2CO3(OH)2
- Chemical formula of Almandine- Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Malachite and Almandine Specific Gravity
Another important criteria for qualitative analysis of gemstones is Malachite and Almandine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Malachite and Almandine Optical Properties during the identification of gemstone. Specific gravity of Malachite is 3.95-4.30 whereas that of Almandine is 3.95-4.30.