Faustite and Scolecite Physical Properties

Faustite

Scolecite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.92.20-2.23

1 7.18

1.5 Fracture

Conchoidal, ConchoidalAnthony et al, Conchoidal, Brittle, Conchoidal

Irregular/uneven, UnevenAnthony et al, Handbook of mineralogy (2001), Brittle, Uneven

1.6 Cleavage

{???} Indistinct

Perfect on {110} and {1 1 0}

1.7 Mohs Hardness

4.55-5.5

2 10

1.8 Chemical Composition

(Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

CaAl 2Si 3O 10 · 3H 2OUlrich Henn and Claudio C.

Faustite and Scolecite Chemical Formula

While comparing Faustite and Scolecite 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 Faustite and Scolecite chemical formula.

Chemical formula of Faustite- (Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Scolecite- CaAl 2Si 3O 10 · 3H 2OUlrich Henn and Claudio C.

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Faustite and Scolecite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Faustite and Scolecite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Faustite and Scolecite Optical Properties during the identification of gemstone. Specific gravity of Faustite is 2.20-2.23 whereas that of Scolecite is 2.20-2.23.