Franklinite and Onyx Physical Properties

Franklinite

Onyx

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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

5.05-5.222.55-2.70

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

None

Indiscernible

1.7 Mohs Hardness

5.5-66.5-7

2 10

1.8 Chemical Composition

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

SiO₂

Franklinite and Onyx Chemical Formula

While comparing Franklinite and Onyx 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 Onyx chemical formula.

Chemical formula of Franklinite- (Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Onyx- SiO₂

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Franklinite Vs Hexagonite

Franklinite and Onyx Specific Gravity

Another important criteria for qualitative analysis of gemstones is Franklinite and Onyx Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Franklinite and Onyx Optical Properties during the identification of gemstone. Specific gravity of Franklinite is 2.55-2.70 whereas that of Onyx is 2.55-2.70.