Hollandite and Faustite Physical Properties

Hollandite

Faustite

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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

5.052.9

1 7.18

1.5 Fracture

Brittle, Metallic

Conchoidal, ConchoidalAnthony et al, Conchoidal, Brittle, Conchoidal

1.6 Cleavage

Distinct / Good, Prismatic

{???} Indistinct

1.7 Mohs Hardness

4-64.5

2 10

1.8 Chemical Composition

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

(Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

Hollandite and Faustite Chemical Formula

While comparing Hollandite and Faustite 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 Faustite chemical formula.

Chemical formula of Hollandite- Ba(Mn++++,Mn++)8O16
Chemical formula of Faustite- (Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

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Hollandite and Faustite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hollandite and Faustite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hollandite and Faustite Optical Properties during the identification of gemstone. Specific gravity of Hollandite is 2.9 whereas that of Faustite is 2.9.