Astrophyllite and Moonstone Physical Properties

Astrophyllite

Moonstone

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

3.2-3.42.56-2.60

1 7.18

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Fracture

Uneven

Uneven, ConchoidalWalter Schumann

Cleavage

Perfect on [001] imperfect on [100]

2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal

Mohs Hardness

36-6.5

2 10

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Chemical Composition

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

Plagioclase Feldspar s: (Na,Ca)Al_1-2Si_3-2O₈ Orthoclase Feldspar : KAlSi₃O₈

Astrophyllite and Moonstone Chemical Formula

While comparing Astrophyllite and Moonstone 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 Moonstone 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 Moonstone- Plagioclase Feldspar s: (Na,Ca)Al_1-2Si_3-2O₈ Orthoclase Feldspar : KAlSi₃O₈

Compare Green Gemstones

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Astrophyllite Vs Brazilianite

Astrophyllite Vs Chalcopyrite

Astrophyllite and Moonstone Specific Gravity

Another important criteria for qualitative analysis of gemstones is Astrophyllite and Moonstone Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Astrophyllite and Moonstone Optical Properties during the identification of gemstone. Specific gravity of Astrophyllite is 2.56-2.60 whereas that of Moonstone is 2.56-2.60.