Rubellite and Anthophyllite Physical Properties
Specific Gravity
3.01-3.06
2.9-3.5
Fracture
Conchoidal
Conchoidal
Cleavage
Indiscernible
{110} Perfect, {???} Distinct, {???} Distinct
Mohs Hardness
7-7.5
5.5-6
Chemical Composition
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
(Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Rubellite and Anthophyllite Chemical Formula
While comparing Rubellite and Anthophyllite 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 Rubellite and Anthophyllite chemical formula.
- Chemical formula of Rubellite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
- Chemical formula of Anthophyllite- (Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Rubellite and Anthophyllite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Rubellite and Anthophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rubellite and Anthophyllite Optical Properties during the identification of gemstone. Specific gravity of Rubellite is 2.9-3.5 whereas that of Anthophyllite is 2.9-3.5.