Franklinite and Erythrite Physical Properties

Franklinite

Erythrite

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1 Physical Properties

1.1 Tenacity

Not Available

Sectile

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

5.05-5.223.06

1 7.18

1.5 Fracture

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

Sectile Curved shavings or scrapings produced by a knife blade, (e.g. graphite).

1.6 Cleavage

None

Perfect on {010}; poor on {100} and { 1 02}.

1.7 Mohs Hardness

5.5-6Not Available

2 10

1.8 Chemical Composition

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

Co3(AsO4)2•8(H2O)

Franklinite and Erythrite Chemical Formula

While comparing Franklinite and Erythrite 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 Erythrite chemical formula.

Chemical formula of Franklinite- (Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)

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Franklinite and Erythrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Franklinite and Erythrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Franklinite and Erythrite Optical Properties during the identification of gemstone. Specific gravity of Franklinite is 3.06 whereas that of Erythrite is 3.06.