Allanite and Montebrasite Physical Properties

Allanite

Montebrasite

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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

3.40-4.202.98-3.10

1 7.18

2.4 Fracture

Not Available

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

2.5 Cleavage

Not Available

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

2.6 Mohs Hardness

Not Available5.5-6

2 10

2.7 Chemical Composition

Not Available

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

Allanite and Montebrasite Chemical Formula

While comparing Allanite and Montebrasite 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 Allanite and Montebrasite chemical formula.

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

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Allanite and Montebrasite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Allanite and Montebrasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Allanite and Montebrasite Optical Properties during the identification of gemstone. Specific gravity of Allanite is 2.98-3.10 whereas that of Montebrasite is 2.98-3.10.