Ettringite and Rhodolite Physical Properties

Ettringite

Rhodolite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Partially soluble in water

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.773.84

1 7.18

1.5 Fracture

Not Available

Conchoidal

1.6 Cleavage

Perfect on {10 1 0}

none, may show indistinct parting

1.7 Mohs Hardness

2-2.57-7.5

2 10

1.8 Chemical Composition

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

(Mg,Fe)₃Al₂Si₃O₁₂

Ettringite and Rhodolite Chemical Formula

While comparing Ettringite and Rhodolite 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 Rhodolite chemical formula.

Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Rhodolite- (Mg,Fe)₃Al₂Si₃O₁₂

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Ettringite and Rhodolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ettringite and Rhodolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ettringite and Rhodolite Optical Properties during the identification of gemstone. Specific gravity of Ettringite is 3.84 whereas that of Rhodolite is 3.84.