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Holmquistite and Tourmaline Physical Properties


Tourmaline and Holmquistite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.95-3.13   
2.85-3.35   

Fracture
Not Available   
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)   

Cleavage
{210} Perfect   
Indistinct   

Mohs Hardness
5-6   
7-7.5   

Chemical Composition
Li 2[(Mg,Fe2+ ) 3Al 2]Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)   
Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.   

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Holmquistite and Tourmaline Chemical Formula

While comparing Holmquistite and Tourmaline 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 Holmquistite and Tourmaline chemical formula.

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Holmquistite and Tourmaline Specific Gravity

Another important criteria for qualitative analysis of gemstones is Holmquistite and Tourmaline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Holmquistite and Tourmaline Optical Properties during the identification of gemstone. Specific gravity of Holmquistite is 2.85-3.35 whereas that of Tourmaline is 2.85-3.35.

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Black Gemstones


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