Calcite and Ettringite Physical Properties

Calcite

Ettringite

Add ⊕

1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Partially soluble in water

1.3 Durability

Not Available

1.4 Specific Gravity

2.67-2.731.77

1 7.18

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

Not Available

1.6 Cleavage

Perfect on [10 1 1] three directions with angle of 74° 55

Perfect on {10 1 0}

1.7 Mohs Hardness

32-2.5

2 10

1.8 Chemical Composition

CaCO 3Ulrich Henn and Claudio C.

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

Calcite and Ettringite Chemical Formula

While comparing Calcite 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 Calcite and Ettringite chemical formula.

Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.
Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

Compare Gems for Cancer » More

Calcite Vs Opal

Calcite Vs Ruby

Calcite Vs Pearl

» More

More Compare Gems for Cancer

Calcite and Ettringite Specific Gravity

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