Polyhalite and Antigorite Physical Properties

Polyhalite

Antigorite

Add ⊕

1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.782.58-2.80

1 7.18

1.5 Fracture

Conchoidal, Brittle

Conchoidal, Brittle, Metallic, Conchoidal, Handbook of mineralogy (2001)

1.6 Cleavage

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

{001} Good

1.7 Mohs Hardness

3.55-5.5

2 10

1.8 Chemical Composition

Not Available

(Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)

Polyhalite and Antigorite Chemical Formula

While comparing Polyhalite and Antigorite 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 Antigorite chemical formula.

Chemical formula of Antigorite- (Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)

Compare Red Gemstones

Polyhalite Vs Heliotrope

Polyhalite Vs Vanadinite

Polyhalite Vs Jacinth

Polyhalite and Antigorite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Polyhalite and Antigorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Polyhalite and Antigorite Optical Properties during the identification of gemstone. Specific gravity of Polyhalite is 2.58-2.80 whereas that of Antigorite is 2.58-2.80.