Hollandite and Grandidierite Physical Properties

Hollandite

Grandidierite

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

5.052.85-3.00

1 7.18

1.5 Fracture

Brittle, Metallic

Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven

1.6 Cleavage

Distinct / Good, Prismatic

Perfect

1.7 Mohs Hardness

4-67.5

2 10

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.

Compare Grey Gemstones

Hollandite Vs Falcons Eye

Hollandite Vs Musgravite

Hollandite Vs Larvikite

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.