Carnelian and Childrenite Physical Properties

Carnelian

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

2.58-2.64

3.06-3.25

1.5 Fracture

Uneven, Splintery, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)

Sub-Conchoidal, ConchoidalArthur Thomas, Conchoidal, Uneven

1.6 Cleavage

Absent

Poor/indistinct on {100}

1.7 Mohs Hardness

6.5-7

4.5-5

1.8 Chemical Composition

SiO₂

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

Carnelian and Childrenite Chemical Formula

While comparing Carnelian 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 Carnelian and Childrenite chemical formula.

Chemical formula of Carnelian- SiO₂
Chemical formula of Childrenite- (Fe,Mn)AlPO 4(OH) 2 -H 2OArthur Thomas , Gemstones (2009)

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Carnelian and Childrenite Specific Gravity

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