Natrolite and Astrophyllite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.20-2.26
3.2-3.4
Fracture
Uneven, Brittle, Metallic, Gemstones (2009)
Uneven, Brittle, Metallic
Cleavage
Perfect on {110}
Perfect on [001] imperfect on [100]
Chemical Composition
Na 2[Al 2Si 3O 10] · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Natrolite and Astrophyllite Chemical Formula
While comparing Natrolite 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 Natrolite and Astrophyllite chemical formula.
- Chemical formula of Natrolite- Na 2[Al 2Si 3O 10] · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Natrolite and Astrophyllite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Natrolite and Astrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Natrolite and Astrophyllite Optical Properties during the identification of gemstone. Specific gravity of Natrolite is 3.2-3.4 whereas that of Astrophyllite is 3.2-3.4.