Ettringite and Pyrargyrite Physical Properties

Ettringite

Pyrargyrite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Partially soluble in water

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.775.85

1 7.18

1.5 Fracture

Not Available

Conchoidal, Uneven, ConchoidalArthur Thomas, Brittle

1.6 Cleavage

Perfect on {10 1 0}

Distinct on {10 1 1}, imperfect on {01 1 2}

1.7 Mohs Hardness

2-2.52.5-3

2 10

1.8 Chemical Composition

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

Ag 3SbS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Ettringite and Pyrargyrite Chemical Formula

While comparing Ettringite and Pyrargyrite 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 Pyrargyrite chemical formula.

Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Pyrargyrite- Ag 3SbS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Ettringite and Pyrargyrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ettringite and Pyrargyrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ettringite and Pyrargyrite Optical Properties during the identification of gemstone. Specific gravity of Ettringite is 5.85 whereas that of Pyrargyrite is 5.85.