Fayalite and Childrenite Physical Properties

Fayalite

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

4.3923.06-3.25

1 7.18

1.5 Fracture

Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

Sub-Conchoidal, ConchoidalArthur Thomas, Conchoidal, Uneven

1.6 Cleavage

{010} moderate, {100} imperfect

Poor/indistinct on {100}

1.7 Mohs Hardness

6.5-74.5-5

2 10

1.8 Chemical Composition

Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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

Fayalite and Childrenite Chemical Formula

While comparing Fayalite 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 Fayalite and Childrenite chemical formula.

Chemical formula of Fayalite- Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Childrenite- (Fe,Mn)AlPO 4(OH) 2 -H 2OArthur Thomas , Gemstones (2009)

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Fayalite Vs Garnet

Fayalite and Childrenite Specific Gravity

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