Amethyst and Anthophyllite Physical Properties

Amethyst

Anthophyllite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

insoluble in common solvents

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.652.9-3.5

1 7.18

1.5 Fracture

Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)

Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, Brittle

1.6 Cleavage

Indiscernible

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

1.7 Mohs Hardness

75.5-6

2 10

1.8 Chemical Composition

SiO₂

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

Amethyst and Anthophyllite Chemical Formula

While comparing Amethyst 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 Amethyst and Anthophyllite chemical formula.

Chemical formula of Amethyst- SiO₂
Chemical formula of Anthophyllite- (Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

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Amethyst and Anthophyllite Specific Gravity

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