Apatite and Ettringite Physical Properties

Apatite

Ettringite

Add ⊕

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

3.16-3.23

Conchoidal, Uneven, Conchoidal to uneven

[0001] indistinct, [1010] indistinct

Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references

Partially soluble in water

1.77

Perfect on {10 1 0}

2-2.5

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

Apatite and Ettringite Chemical Formula

While comparing Apatite 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 Apatite and Ettringite chemical formula.

Compare Gems for Gemini » More

Apatite Vs Jade

Apatite Vs Lazulite

Apatite Vs Pearl

» More Compare Gems for Gemini

Apatite and Ettringite Specific Gravity

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