Jade and Astrophyllite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.90-3.38
3.2-3.4
Fracture
Gemstones of the world (2001), Difficult, Splintery
Uneven, Brittle, Metallic
Cleavage
1 or 2,2 prismatic.
Perfect on [001] imperfect on [100]
Chemical Composition
Nephrite: Ca2(Mg,Fe)5Si8O22(OH)2 Jadeite: NaAlSi2O6
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Jade and Astrophyllite Chemical Formula
While comparing Jade 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 Jade and Astrophyllite chemical formula.
- Chemical formula of Jade- Nephrite: Ca2(Mg,Fe)5Si8O22(OH)2 Jadeite: NaAlSi2O6
- Chemical formula of Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Jade and Astrophyllite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Jade and Astrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Jade and Astrophyllite Optical Properties during the identification of gemstone. Specific gravity of Jade is 3.2-3.4 whereas that of Astrophyllite is 3.2-3.4.