Vivianite and Hollandite Physical Properties

Vivianite

Hollandite

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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

2.64-2.705.05

1 7.18

1.5 Fracture

(e.g. graphite).

Brittle, Metallic

1.6 Cleavage

{010} Perfect

Distinct / Good, Prismatic

1.7 Mohs Hardness

Not Available4-6

2 10

1.8 Chemical Composition

Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

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

Vivianite and Hollandite Chemical Formula

While comparing Vivianite 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 Vivianite and Hollandite chemical formula.

Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
Chemical formula of Hollandite- Ba(Mn++++,Mn++)8O16

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Vivianite and Hollandite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Vivianite and Hollandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vivianite and Hollandite Optical Properties during the identification of gemstone. Specific gravity of Vivianite is 5.05 whereas that of Hollandite is 5.05.