Franklinite and Atacamite Physical Properties

Franklinite

Atacamite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

5.05-5.223.745-3.776

1 7.18

1.5 Fracture

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

Conchoidal, Conchoidal, Brittle

1.6 Cleavage

None

Perfect on {010}, fair on {101}

1.7 Mohs Hardness

5.5-63-3.5

2 10

1.8 Chemical Composition

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

Cu2Cl(OH)3

Franklinite and Atacamite Chemical Formula

While comparing Franklinite and Atacamite 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 Franklinite and Atacamite chemical formula.

Chemical formula of Franklinite- (Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Atacamite- Cu2Cl(OH)3

Compare Red Gemstones

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Franklinite Vs Hexagonite

Franklinite and Atacamite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Franklinite and Atacamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Franklinite and Atacamite Optical Properties during the identification of gemstone. Specific gravity of Franklinite is 3.745-3.776 whereas that of Atacamite is 3.745-3.776.