Polyhalite and Anthophyllite Physical Properties

Polyhalite

Anthophyllite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.782.9-3.5

1 7.18

1.5 Fracture

Conchoidal, Brittle

Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, Brittle

1.6 Cleavage

Perfect on {10 1 }; parting on {010}

{110} Perfect, {???} Distinct, {???} Distinct

1.7 Mohs Hardness

3.55.5-6

2 10

1.8 Chemical Composition

Not Available

(Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

Polyhalite and Anthophyllite Chemical Formula

While comparing Polyhalite and Anthophyllite 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 Polyhalite and Anthophyllite chemical formula.

Chemical formula of Anthophyllite- (Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

Compare Red Gemstones

Polyhalite Vs Jacinth

Polyhalite Vs Heliotrope

Polyhalite Vs Vanadinite

Polyhalite and Anthophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Polyhalite and Anthophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Polyhalite and Anthophyllite Optical Properties during the identification of gemstone. Specific gravity of Polyhalite is 2.9-3.5 whereas that of Anthophyllite is 2.9-3.5.