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Hollandite
Hollandite

Grandidierite
Grandidierite



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Hollandite and Grandidierite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
5.05
2.85-3.00
1.5 Fracture
Brittle, Metallic
Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven
1.6 Cleavage
Distinct / Good, Prismatic
Perfect
1.7 Mohs Hardness
4-6
7.5
1.8 Chemical Composition
Ba(Mn++++,Mn++)8O16
(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.

Hollandite and Grandidierite Chemical Formula

While comparing Hollandite and Grandidierite 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 Grandidierite chemical formula.

  • Chemical formula of Hollandite- Ba(Mn++++,Mn++)8O16
  • Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.

Hollandite and Grandidierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hollandite and Grandidierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hollandite and Grandidierite Optical Properties during the identification of gemstone. Specific gravity of Hollandite is 2.85-3.00 whereas that of Grandidierite is 2.85-3.00.