Charoite and Astrophyllite Physical Properties

Charoite

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

2.54-2.783.2-3.4

1 7.18

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

Uneven, Brittle, Metallic

1.6 Cleavage

Good in three directions

Perfect on [001] imperfect on [100]

1.7 Mohs Hardness

5-63

2 10

1.8 Chemical Composition

K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Charoite and Astrophyllite Chemical Formula

While comparing Charoite 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 Charoite and Astrophyllite chemical formula.

Chemical formula of Charoite- K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
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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Charoite and Astrophyllite Specific Gravity

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