Friedelite and Polyhalite Physical Properties

Friedelite

Polyhalite

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.06-3.192.78

1 7.18

1.5 Fracture

UnevenArthur Thomas, Gemstones (2009) Tough, UnevenArthur Thomas, Gemstones (2009) Tough, Brittle, Uneven

Conchoidal, Brittle

1.6 Cleavage

{010} Perfect

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

1.7 Mohs Hardness

4-53.5

2 10

1.8 Chemical Composition

Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.

Not Available

Friedelite and Polyhalite Chemical Formula

While comparing Friedelite 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 Friedelite and Polyhalite chemical formula.

Chemical formula of Friedelite- Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.

Compare Red Gemstones

Friedelite Vs Hydrogrossular

Friedelite Vs Hibonite

Friedelite Vs Imperial Topaz

Friedelite and Polyhalite Specific Gravity

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