Labradorite and Staurolite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.69-2.72
3.7-3.8
Fracture
Uneven, Conchoidal, Gems, Sixth Edition (2006)
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Cleavage
Perfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}
Distinct on {010}
Mohs Hardness
6-6.5
7-7.5
Chemical Composition
(Na,Ca)1-2Si3-2O8
(Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
Labradorite and Staurolite Chemical Formula
While comparing Labradorite and Staurolite 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 Labradorite and Staurolite chemical formula.
- Chemical formula of Labradorite- (Na,Ca)1-2Si3-2O8
- Chemical formula of Staurolite- (Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
Labradorite and Staurolite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Labradorite and Staurolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Labradorite and Staurolite Optical Properties during the identification of gemstone. Specific gravity of Labradorite is 3.7-3.8 whereas that of Staurolite is 3.7-3.8.