Apophyllite KF and Dravite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.33-2.37
3.03-3.18
Fracture
Uneven, Brittle, Uneven, Brittle, Uneven
Uneven, Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Cleavage
Perfect on {001}, imperfect on {110}
{???} Indistinct
Mohs Hardness
4.5-5
7-7.5
Chemical Composition
(K,Na)Ca4Si8O20(F,OH)•8(H2O)
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Apophyllite KF and Dravite Chemical Formula
While comparing Apophyllite KF and Dravite 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 Apophyllite KF and Dravite chemical formula.
- Chemical formula of Apophyllite KF- (K,Na)Ca4Si8O20(F,OH)•8(H2O)
- Chemical formula of Dravite- Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Apophyllite KF and Dravite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Apophyllite KF and Dravite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apophyllite KF and Dravite Optical Properties during the identification of gemstone. Specific gravity of Apophyllite KF is 3.03-3.18 whereas that of Dravite is 3.03-3.18.