Franklinite and Grandidierite Physical Properties

Franklinite

Grandidierite

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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

5.05-5.222.85-3.00

1 7.18

1.5 Fracture

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

Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven

1.6 Cleavage

None

Perfect

1.7 Mohs Hardness

5.5-67.5

2 10

1.8 Chemical Composition

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

(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.

Franklinite and Grandidierite Chemical Formula

While comparing Franklinite and Grandidierite 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 Grandidierite chemical formula.

Chemical formula of Franklinite- (Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.

Compare Red Gemstones

Franklinite Vs Hexagonite

Franklinite Vs Hydrogrossular

Franklinite Vs Hibonite

Franklinite and Grandidierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Franklinite and Grandidierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Franklinite and Grandidierite Optical Properties during the identification of gemstone. Specific gravity of Franklinite is 2.85-3.00 whereas that of Grandidierite is 2.85-3.00.