Achroite and Hollandite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.90-3.40
5.05
Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
Brittle, Metallic
Cleavage
Not Available
Distinct / Good, Prismatic
Chemical Composition
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Ba(Mn++++,Mn++)8O16
Achroite and Hollandite Chemical Formula
While comparing Achroite and Hollandite 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 Achroite and Hollandite chemical formula.
- Chemical formula of Achroite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
- Chemical formula of Hollandite- Ba(Mn++++,Mn++)8O16
Achroite and Hollandite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Achroite and Hollandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Achroite and Hollandite Optical Properties during the identification of gemstone. Specific gravity of Achroite is 5.05 whereas that of Hollandite is 5.05.