Montebrasite and Norbergite Physical Properties

Montebrasite

Norbergite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

2.98-3.10

Uneven, Conchoidal

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

5.5-6

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

3.177

Uneven, Conchoidal

{???} Distinct

6-6.5

Mg 3(SiO 4)(F,OH) 2Anthony et al , Handbook of Mineralogy (2001)

Montebrasite and Norbergite Chemical Formula

While comparing Montebrasite and Norbergite 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 Norbergite chemical formula.

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Montebrasite and Norbergite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Montebrasite and Norbergite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Montebrasite Vs Norbergite during the identification of gemstone. Specific gravity of Montebrasite is whereas that of Norbergite is .