Pargasite and Fluorite Physical Properties

Pargasite

Fluorite

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Physical Properties

Tenacity

Brittle

Solubility

slightly water soluble and in hot hydrochloric acid

Durability

Specific Gravity

3.04-3.263.00-3.25

1 7.18

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Fracture

Splintery, Uneven

Subconchoidal, Uneven, ConchoidalWalter Schumann

Cleavage

{110} perfect

Octahedral, perfect on {111}, parting on {011}

Mohs Hardness

5-64

2 10

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Chemical Composition

NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

CaF₂

Pargasite and Fluorite Chemical Formula

While comparing Pargasite and Fluorite 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 Pargasite and Fluorite chemical formula.

Chemical formula of Pargasite- NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Fluorite- CaF₂

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Pargasite and Fluorite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pargasite and Fluorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pargasite and Fluorite Optical Properties during the identification of gemstone. Specific gravity of Pargasite is 3.00-3.25 whereas that of Fluorite is 3.00-3.25.