Faustite and Childrenite Physical Properties

Faustite

Childrenite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.93.06-3.25

1 7.18

1.5 Fracture

Conchoidal, ConchoidalAnthony et al, Conchoidal, Brittle, Conchoidal

Sub-Conchoidal, ConchoidalArthur Thomas, Conchoidal, Uneven

1.6 Cleavage

{???} Indistinct

Poor/indistinct on {100}

1.7 Mohs Hardness

4.54.5-5

2 10

1.8 Chemical Composition

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

(Fe,Mn)AlPO 4(OH) 2 -H 2OArthur Thomas , Gemstones (2009)

Faustite and Childrenite Chemical Formula

While comparing Faustite and Childrenite 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 Childrenite 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 Childrenite- (Fe,Mn)AlPO 4(OH) 2 -H 2OArthur Thomas , Gemstones (2009)

Compare Green Gemstones

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Faustite and Childrenite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Faustite and Childrenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Faustite and Childrenite Optical Properties during the identification of gemstone. Specific gravity of Faustite is 3.06-3.25 whereas that of Childrenite is 3.06-3.25.