Hollandite and Andalusite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
5.05
3.05-3.21
Fracture
Brittle, Metallic
Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)
Cleavage
Distinct / Good, Prismatic
Good on {110}, poor on {100}
Chemical Composition
Ba(Mn++++,Mn++)8O16
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Hollandite and Andalusite Chemical Formula
While comparing Hollandite and Andalusite 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 Hollandite and Andalusite chemical formula.
- Chemical formula of Hollandite- Ba(Mn++++,Mn++)8O16
- Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Hollandite and Andalusite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Hollandite and Andalusite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hollandite and Andalusite Optical Properties during the identification of gemstone. Specific gravity of Hollandite is 3.05-3.21 whereas that of Andalusite is 3.05-3.21.