Carnelian and Schorl Physical Properties

Carnelian

Schorl

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.58-2.64

3.18-3.22

1.5 Fracture

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

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

1.6 Cleavage

Absent

{1011} Indistinct

1.7 Mohs Hardness

6.5-7

Not Available

1.8 Chemical Composition

SiO₂

Na(Fe2+3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Carnelian and Schorl Chemical Formula

While comparing Carnelian and Schorl 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 Schorl chemical formula.

Chemical formula of Carnelian- SiO₂
Chemical formula of Schorl- Na(Fe2+3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

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Carnelian and Schorl Specific Gravity

Another important criteria for qualitative analysis of gemstones is Carnelian and Schorl Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Carnelian and Schorl Optical Properties during the identification of gemstone. Specific gravity of Carnelian is 3.18-3.22 whereas that of Schorl is 3.18-3.22.