Hollandite and Apatite Physical Properties

Hollandite

Apatite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

5.053.16-3.23

1 7.18

1.5 Fracture

Brittle, Metallic

Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal to uneven

1.6 Cleavage

Distinct / Good, Prismatic

[0001] indistinct, [1010] indistinct

1.7 Mohs Hardness

4-65

2 10

1.8 Chemical Composition

Ba(Mn++++,Mn++)8O16

Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references

Hollandite and Apatite Chemical Formula

While comparing Hollandite and Apatite 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 Apatite chemical formula.

Chemical formula of Hollandite- Ba(Mn++++,Mn++)8O16
Chemical formula of Apatite- Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references

Compare Grey Gemstones

Hollandite Vs Musgravite

Hollandite Vs Larvikite

Hollandite Vs Falcons Eye

Hollandite and Apatite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hollandite and Apatite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hollandite and Apatite Optical Properties during the identification of gemstone. Specific gravity of Hollandite is 3.16-3.23 whereas that of Apatite is 3.16-3.23.