Pectolite and Astrophyllite Physical Properties

Pectolite

Astrophyllite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.74-2.903.2-3.4

1 7.18

1.5 Fracture

Uneven, Gemstones (2009), Splintery

Uneven, Brittle, Metallic

1.6 Cleavage

Perfect on {100} and {001}

Perfect on [001] imperfect on [100]

1.7 Mohs Hardness

4.5-53

2 10

1.8 Chemical Composition

Ca 2NaHSi 3O 9Ulrich Henn and Claudio C.

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

Pectolite and Astrophyllite Chemical Formula

While comparing Pectolite 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 Pectolite and Astrophyllite chemical formula.

Chemical formula of Pectolite- Ca 2NaHSi 3O 9Ulrich Henn and Claudio C.
Chemical formula of Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)

Compare Colorless Gems

Pectolite Vs Phosphophyllite

Pectolite Vs Phosphosiderite

Pectolite Vs Pleonaste

Pectolite and Astrophyllite Specific Gravity

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