Fluorite and Ettringite Physical Properties

Fluorite

Ettringite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

slightly water soluble and in hot hydrochloric acid

Partially soluble in water

1.3 Durability

Not Available

1.4 Specific Gravity

3.00-3.251.77

1 7.18

1.5 Fracture

Subconchoidal, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references

Not Available

1.6 Cleavage

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

Perfect on {10 1 0}

1.7 Mohs Hardness

42-2.5

2 10

1.8 Chemical Composition

CaF₂

Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

Fluorite and Ettringite Chemical Formula

While comparing Fluorite and Ettringite 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 Fluorite and Ettringite chemical formula.

Chemical formula of Fluorite- CaF₂
Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

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Fluorite and Ettringite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Fluorite and Ettringite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Fluorite and Ettringite Optical Properties during the identification of gemstone. Specific gravity of Fluorite is 1.77 whereas that of Ettringite is 1.77.