Schorl and Chrome-Chalcedony Physical Properties

Schorl

Chrome-Chalcedony

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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

3.18-3.222.55-2.70

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

{1011} Indistinct

Not Available

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)

SiO 2 (with trace Cr minerals) Gemdat.org , Management Team (2012)

Schorl and Chrome-Chalcedony Chemical Formula

While comparing Schorl and Chrome-Chalcedony 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 Chrome-Chalcedony 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 Chrome-Chalcedony- SiO 2 (with trace Cr minerals) Gemdat.org , Management Team (2012)

Compare Black Gemstones

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Schorl Vs Triplite

Schorl Vs Snowflake Obsidian

Schorl and Chrome-Chalcedony Specific Gravity

Another important criteria for qualitative analysis of gemstones is Schorl and Chrome-Chalcedony Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Schorl and Chrome-Chalcedony Optical Properties during the identification of gemstone. Specific gravity of Schorl is 2.55-2.70 whereas that of Chrome-Chalcedony is 2.55-2.70.