Mimetite and Petalite Physical Properties

Mimetite

Petalite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

7.102.40

1 7.18

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

Subconchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal

1.6 Cleavage

[10 1 1] Imperfect

Perfect on {001}, poor on {201} with 38.5° angle between the two

1.7 Mohs Hardness

3.56-6.5

2 10

1.8 Chemical Composition

Pb 5(AsO 4) 3ClMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Mimetite and Petalite Chemical Formula

While comparing Mimetite and Petalite 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 Mimetite and Petalite chemical formula.

Chemical formula of Mimetite- Pb 5(AsO 4) 3ClMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Petalite- LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Red Gemstones

Mimetite Vs Phosphosiderite

Mimetite Vs Neptunite

Mimetite Vs Pezzottaite

Mimetite and Petalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Mimetite and Petalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Mimetite and Petalite Optical Properties during the identification of gemstone. Specific gravity of Mimetite is 2.40 whereas that of Petalite is 2.40.