Mimetite and Polyhalite Physical Properties

Mimetite

Polyhalite

Add ⊕

1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

7.102.78

1 7.18

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

Conchoidal, Brittle

1.6 Cleavage

[10 1 1] Imperfect

Perfect on {10 1 }; parting on {010}

1.7 Mohs Hardness

3.53.5

2 10

1.8 Chemical Composition

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

Not Available

Mimetite and Polyhalite Chemical Formula

While comparing Mimetite and Polyhalite 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 Polyhalite chemical formula.

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

Compare Red Gemstones

Mimetite Vs Neptunite

Mimetite Vs Pezzottaite

Mimetite Vs Phosphosiderite

Mimetite and Polyhalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Mimetite and Polyhalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Mimetite and Polyhalite Optical Properties during the identification of gemstone. Specific gravity of Mimetite is 2.78 whereas that of Polyhalite is 2.78.