Annabergite and Franklinite Physical Properties

Annabergite

Franklinite

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1 Physical Properties

1.1 Tenacity

Sectile

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.075.05-5.22

1 7.18

1.5 Fracture

Brittle, Metallic, Brittle, Metallic, Brittle, Metallic

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001)

1.6 Cleavage

Perfect on {010}, indistinct on {100} and {102}

None

1.7 Mohs Hardness

25.5-6

2 10

1.8 Chemical Composition

Ni3(AsO4)2•8(H2O)

(Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)

Annabergite and Franklinite Chemical Formula

While comparing Annabergite and Franklinite 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 Annabergite and Franklinite chemical formula.

Chemical formula of Annabergite- Ni3(AsO4)2•8(H2O)
Chemical formula of Franklinite- (Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)

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Annabergite and Franklinite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Annabergite and Franklinite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Annabergite and Franklinite Optical Properties during the identification of gemstone. Specific gravity of Annabergite is 5.05-5.22 whereas that of Franklinite is 5.05-5.22.