Astrophyllite and Chondrodite Physical Properties

Astrophyllite

Chondrodite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.2-3.4

3.10-3.20

1.5 Fracture

Uneven, Brittle, Metallic

Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

1.6 Cleavage

Perfect on [001] imperfect on [100]

Poor to good on (001)

1.7 Mohs Hardness

6-6.5

1.8 Chemical Composition

(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)

(Mg,Fe) 5(SiO 4) 2(F,OH) 2Ulrich Henn and Claudio C.

Astrophyllite and Chondrodite Chemical Formula

While comparing Astrophyllite and Chondrodite 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 Astrophyllite and Chondrodite chemical formula.

Chemical formula of Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Chondrodite- (Mg,Fe) 5(SiO 4) 2(F,OH) 2Ulrich Henn and Claudio C.

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Astrophyllite and Chondrodite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Astrophyllite and Chondrodite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Astrophyllite and Chondrodite Optical Properties during the identification of gemstone. Specific gravity of Astrophyllite is 3.10-3.20 whereas that of Chondrodite is 3.10-3.20.