Schorl and Fayalite Physical Properties

Schorl

Fayalite

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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

3.18-3.224.392

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

{1011} Indistinct

{010} moderate, {100} imperfect

1.7 Mohs Hardness

Not Available6.5-7

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)

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

Schorl and Fayalite Chemical Formula

While comparing Schorl and Fayalite 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 Fayalite 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 Fayalite- Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Black Gemstones

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Schorl Vs Triplite

Schorl Vs Snowflake Obsidian

Schorl and Fayalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Schorl and Fayalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Schorl and Fayalite Optical Properties during the identification of gemstone. Specific gravity of Schorl is 4.392 whereas that of Fayalite is 4.392.