Malachite and Astrophyllite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.25-4.10
3.2-3.4
Fracture
Conchoidal, Conchoidal, Gemstones (2009), Uneven
Uneven, Brittle, Metallic
Cleavage
Perfect on { 2 01} fair on {010}
Perfect on [001] imperfect on [100]
Chemical Composition
Cu2CO3(OH)2
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Malachite and Astrophyllite Chemical Formula
While comparing Malachite 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 Malachite and Astrophyllite chemical formula.
- Chemical formula of Malachite- Cu2CO3(OH)2
- Chemical formula of Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Malachite and Astrophyllite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Malachite and Astrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Malachite and Astrophyllite Optical Properties during the identification of gemstone. Specific gravity of Malachite is 3.2-3.4 whereas that of Astrophyllite is 3.2-3.4.