Friedelite and Bertrandite Physical Properties

Friedelite

Bertrandite

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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

3.06-3.192.59-2.60

1 7.18

1.5 Fracture

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

Brittle, Metallic, Brittle, Metallic

1.6 Cleavage

{010} Perfect

{001} Perfect, {110} Distinct, {101} Distinct

1.7 Mohs Hardness

4-56-7

2 10

1.8 Chemical Composition

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

Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)

Friedelite and Bertrandite Chemical Formula

While comparing Friedelite and Bertrandite 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 Bertrandite chemical formula.

Chemical formula of Friedelite- Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.
Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)

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Friedelite and Bertrandite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Friedelite and Bertrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Friedelite and Bertrandite Optical Properties during the identification of gemstone. Specific gravity of Friedelite is 2.59-2.60 whereas that of Bertrandite is 2.59-2.60.