Schorl and Hematite Physical Properties

Schorl

Hematite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.18-3.225.00-5.30

1 7.18

1.5 Fracture

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

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle

1.6 Cleavage

{1011} Indistinct

None, may show partings on {0001} and {10 1 1}

1.7 Mohs Hardness

Not Available6

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 2O 3Arthur Thomas , Gemstones (2009)

Schorl and Hematite Chemical Formula

While comparing Schorl and Hematite 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 Hematite 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 Hematite- Fe 2O 3Arthur Thomas , Gemstones (2009)

Compare Black Gemstones

Schorl Vs Snowflake Obsidian

Schorl Vs Triplite

Schorl Vs Xenotime

Schorl and Hematite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Schorl and Hematite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Schorl and Hematite Optical Properties during the identification of gemstone. Specific gravity of Schorl is 5.00-5.30 whereas that of Hematite is 5.00-5.30.