Brookite and Anthophyllite Physical Properties
Specific Gravity
3.87-4.14
2.9-3.5
Fracture
Subconchoidal, Conchoidal
Conchoidal
Cleavage
Poor on {120}, in traces on {001}
{110} Perfect, {???} Distinct, {???} Distinct
Mohs Hardness
5.5-6
5.5-6
Chemical Composition
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Brookite and Anthophyllite Chemical Formula
While comparing Brookite 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 Brookite and Anthophyllite chemical formula.
- Chemical formula of Brookite- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Anthophyllite- (Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
Brookite and Anthophyllite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Brookite and Anthophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Brookite and Anthophyllite Optical Properties during the identification of gemstone. Specific gravity of Brookite is 2.9-3.5 whereas that of Anthophyllite is 2.9-3.5.