Schorl and Apophyllite Physical Properties

Schorl

Apophyllite

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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

3.18-3.222.30-2.50

1 7.18

1.5 Fracture

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

Uneven, UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

{1011} Indistinct

Perfect on (001)

1.7 Mohs Hardness

Not Available4.5-5

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)

KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.

Schorl and Apophyllite Chemical Formula

While comparing Schorl and Apophyllite 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 Apophyllite 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 Apophyllite- KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.

Compare Black Gemstones

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Schorl Vs Snowflake Obsidian

Schorl and Apophyllite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Schorl and Apophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Schorl and Apophyllite Optical Properties during the identification of gemstone. Specific gravity of Schorl is 2.30-2.50 whereas that of Apophyllite is 2.30-2.50.