Schorl and Sylvite Physical Properties

Schorl

Sylvite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.18-3.221.993

1 7.18

1.5 Fracture

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

Uneven, Brittle

1.6 Cleavage

{1011} Indistinct

Perfect on [100], [010], [001]

1.7 Mohs Hardness

Not Available2.5

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)

Not Available

Schorl and Sylvite Chemical Formula

While comparing Schorl and Sylvite 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 Sylvite 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)

Compare Black Gemstones

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Schorl Vs Snowflake Obsidian

Schorl and Sylvite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Schorl and Sylvite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Schorl and Sylvite Optical Properties during the identification of gemstone. Specific gravity of Schorl is 1.993 whereas that of Sylvite is 1.993.