Anthophyllite and Bytownite Physical Properties
Specific Gravity
2.9-3.5
2.72-2.75
Fracture
Conchoidal
Uneven
Cleavage
{110} Perfect, {???} Distinct, {???} Distinct
Perfect on [001], good on [010], imperfect on [110]
Mohs Hardness
5.5-6
6-6.5
Chemical Composition
(Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Anthophyllite and Bytownite Chemical Formula
While comparing Anthophyllite and Bytownite 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 Anthophyllite and Bytownite chemical formula.
- Chemical formula of Anthophyllite- (Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
- Chemical formula of Bytownite- Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Anthophyllite and Bytownite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Anthophyllite and Bytownite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anthophyllite and Bytownite Optical Properties during the identification of gemstone. Specific gravity of Anthophyllite is 2.72-2.75 whereas that of Bytownite is 2.72-2.75.