Schorl and Powellite Physical Properties

Schorl

Powellite

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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

3.18-3.224.23

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

{1011} Indistinct

{111} Distinct

1.7 Mohs Hardness

Not Available3.5-4

2 10

1.8 Chemical Composition

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

CaMoO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Schorl and Powellite Chemical Formula

While comparing Schorl and Powellite 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 Schorl and Powellite chemical formula.

Chemical formula of Schorl- Na(Fe2+3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Chemical formula of Powellite- CaMoO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Black Gemstones

Schorl Vs Snowflake Obsidian

Schorl Vs Xenotime

Schorl Vs Triplite

Schorl and Powellite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Schorl and Powellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Schorl and Powellite Optical Properties during the identification of gemstone. Specific gravity of Schorl is 4.23 whereas that of Powellite is 4.23.