Montebrasite and Franklinite Physical Properties

Montebrasite

Franklinite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

2.98-3.105.05-5.22

1 7.18

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Fracture

Uneven, Conchoidal

Uneven

Cleavage

{100} Perfect, {110} Good, {011} Distinct

None

Mohs Hardness

5.5-65.5-6

2 10

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Chemical Composition

LiAl(PO 4)(OH,F)Walter Schumann , Gemstones of the world (2001) More from other references

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

Montebrasite and Franklinite Chemical Formula

While comparing Montebrasite 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 Montebrasite and Franklinite chemical formula.

Chemical formula of Montebrasite- LiAl(PO 4)(OH,F)Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Franklinite- (Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)

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Montebrasite and Franklinite Specific Gravity

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