Anthophyllite and Alunite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Soluble
Durability
Not Available
Not Available
Specific Gravity
2.9-3.5
2.6-2.9
Fracture
Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, Brittle
Conchoidal, Uneven
Cleavage
{110} Perfect, {???} Distinct, {???} Distinct
On {0001}, perfect
Mohs Hardness
5.5-6
3.5-4
Chemical Composition
(Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
KAl3(SO4)2(OH)6
Anthophyllite and Alunite Chemical Formula
While comparing Anthophyllite and Alunite 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 Alunite 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 Alunite- KAl3(SO4)2(OH)6
Anthophyllite and Alunite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Anthophyllite and Alunite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Anthophyllite and Alunite Optical Properties during the identification of gemstone. Specific gravity of Anthophyllite is 2.6-2.9 whereas that of Alunite is 2.6-2.9.