Schorl and Fire Opal Physical Properties

Schorl

Fire Opal

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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

3.18-3.221.97-2.22

1 7.18

1.5 Fracture

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

Conchoidal, Conchoidal, Gemstones of the world (2001)

1.6 Cleavage

{1011} Indistinct

Not Available

1.7 Mohs Hardness

Not Available6-6.5

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)

SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001) More from other references

Schorl and Fire Opal Chemical Formula

While comparing Schorl and Fire Opal 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 Fire Opal 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 Fire Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001) More from other references

Compare Black Gemstones

Schorl Vs Triplite

Schorl Vs Snowflake Obsidian

Schorl Vs Xenotime

Schorl and Fire Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Schorl and Fire Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Schorl and Fire Opal Optical Properties during the identification of gemstone. Specific gravity of Schorl is 1.97-2.22 whereas that of Fire Opal is 1.97-2.22.