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Tourmaline and Apophyllite KF Physical Properties


Apophyllite KF and Tourmaline Physical Properties


Physical Properties

Tenacity
Not Available   
Brittle   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.85-3.35   
2.33-2.37   

Fracture
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)   
Uneven, Brittle, Uneven, Brittle, Uneven   

Cleavage
Indistinct   
Perfect on {001}, imperfect on {110}   

Mohs Hardness
7-7.5   
4.5-5   

Chemical Composition
Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.   
(K,Na)Ca4Si8O20(F,OH)•8(H2O)   

Optical Properties >>
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Tourmaline and Apophyllite KF Chemical Formula

While comparing Tourmaline and Apophyllite KF 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 Tourmaline and Apophyllite KF chemical formula.

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Tourmaline and Apophyllite KF Specific Gravity

Another important criteria for qualitative analysis of gemstones is Tourmaline and Apophyllite KF Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tourmaline and Apophyllite KF Optical Properties during the identification of gemstone. Specific gravity of Tourmaline is 2.33-2.37 whereas that of Apophyllite KF is 2.33-2.37.

Semi Precious

Semi Precious


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