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Ettringite
Ettringite

Magnetite
Magnetite



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Ettringite
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Magnetite

Ettringite and Magnetite Physical Properties

Physical Properties

Tenacity

-
-

Solubility

Partially soluble in water
-

Durability

-
-

Specific Gravity

1.775.2
1 7.18
👆🏻

Fracture

-
Uneven, Conchoidal

Cleavage

Perfect on {10 1 0}
None

Mohs Hardness

2-2.55.5-6.5
2 10
👆🏻

Chemical Composition

Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)
Fe 3O 4Ulrich Henn and Claudio C.

Ettringite and Magnetite Chemical Formula

While comparing Ettringite and Magnetite 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 Ettringite and Magnetite chemical formula.

  • Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)
  • Chemical formula of Magnetite- Fe 3O 4Ulrich Henn and Claudio C.

Ettringite and Magnetite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ettringite and Magnetite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ettringite and Magnetite Optical Properties during the identification of gemstone. Specific gravity of Ettringite is 5.2 whereas that of Magnetite is 5.2.