Scapolite and Astrophyllite Physical Properties

Scapolite

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

2.58-2.743.2-3.4

1 7.18

1.5 Fracture

ConchoidalWalter Schumann, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Splintery

Uneven, Brittle, Metallic

1.6 Cleavage

{100} Distinct, {110} Distinct

Perfect on [001] imperfect on [100]

1.7 Mohs Hardness

5.5-63

2 10

1.8 Chemical Composition

Na 4Al 3Si 9O 24Cl to Ca 4Al 6Si 6O 24(CO 3,SO 4)Walter Schumann , Gemstones of the world (2001) More from other references

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

Scapolite and Astrophyllite Chemical Formula

While comparing Scapolite 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 Scapolite and Astrophyllite chemical formula.

Chemical formula of Scapolite- Na 4Al 3Si 9O 24Cl to Ca 4Al 6Si 6O 24(CO 3,SO 4)Walter Schumann , Gemstones of the world (2001) 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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Scapolite and Astrophyllite Specific Gravity

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