Schorl and Gahnite Physical Properties

Schorl

Gahnite

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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

3.18-3.224.00-4.62

1 7.18

1.5 Fracture

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

Conchoidal, Uneven

1.6 Cleavage

{1011} Indistinct

Indistinct parting on [111]

1.7 Mohs Hardness

Not Available7.5-8

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)

ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Schorl and Gahnite Chemical Formula

While comparing Schorl and Gahnite 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 Gahnite 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 Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Black Gemstones

Schorl Vs Triplite

Schorl Vs Xenotime

Schorl Vs Snowflake Obsidian

Schorl and Gahnite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Schorl and Gahnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Schorl and Gahnite Optical Properties during the identification of gemstone. Specific gravity of Schorl is 4.00-4.62 whereas that of Gahnite is 4.00-4.62.