Andradite Garnet and Astrophyllite Physical Properties

Andradite Garnet

Astrophyllite

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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

3.8-3.93.2-3.4

1 7.18

1.5 Fracture

Not Available

Uneven, Brittle, Metallic

1.6 Cleavage

None

Perfect on [001] imperfect on [100]

1.7 Mohs Hardness

6.5-7.53

2 10

1.8 Chemical Composition

Ca₃Fe³⁺₂Si₃O₁₂

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

Andradite Garnet and Astrophyllite Chemical Formula

While comparing Andradite Garnet and Astrophyllite 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 Andradite Garnet and Astrophyllite chemical formula.

Chemical formula of Andradite Garnet- Ca₃Fe³⁺₂Si₃O₁₂
Chemical formula of Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)

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Andradite Garnet and Astrophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andradite Garnet and Astrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andradite Garnet and Astrophyllite Optical Properties during the identification of gemstone. Specific gravity of Andradite Garnet is 3.2-3.4 whereas that of Astrophyllite is 3.2-3.4.