Piemontite and Faustite Physical Properties

Piemontite

Faustite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

Not Available2.9

1 7.18

1.5 Fracture

Uneven, Splintery

Conchoidal, ConchoidalAnthony et al, Conchoidal, Brittle, Conchoidal

1.6 Cleavage

[001] good, [100] distinct

{???} Indistinct

1.7 Mohs Hardness

6-6.54.5

2 10

1.8 Chemical Composition

Not Available

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

Piemontite and Faustite Chemical Formula

While comparing Piemontite and Faustite 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 Piemontite and Faustite chemical formula.

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

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Piemontite and Faustite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Piemontite and Faustite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Piemontite and Faustite Optical Properties during the identification of gemstone. Specific gravity of Piemontite is 2.9 whereas that of Faustite is 2.9.