Schorl and Scapolite Physical Properties

Schorl

Scapolite

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1 Physical Properties

1.1 Tenacity

Not Available

1.3 Solubility

Not Available

1.5 Durability

Not Available

1.6 Specific Gravity

3.18-3.222.58-2.74

1 7.18

2.7 Fracture

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

ConchoidalWalter Schumann, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Splintery

2.8 Cleavage

{1011} Indistinct

{100} Distinct, {110} Distinct

2.9 Mohs Hardness

Not Available5.5-6

2 10

2.13 Chemical Composition

Na(Fe2+3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Na 4Al 3Si 9O 24Cl to Ca 4Al 6Si 6O 24(CO 3,SO 4)Walter Schumann , Gemstones of the world (2001) More from other references

Schorl and Scapolite Chemical Formula

While comparing Schorl and Scapolite 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 Scapolite 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 Scapolite- Na 4Al 3Si 9O 24Cl to Ca 4Al 6Si 6O 24(CO 3,SO 4)Walter Schumann , Gemstones of the world (2001) More from other references

Compare Black Gemstones

Schorl Vs Hypersthene

Schorl Vs Melanite

Schorl Vs Holmquistite

Schorl and Scapolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Schorl and Scapolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Schorl and Scapolite Optical Properties during the identification of gemstone. Specific gravity of Schorl is 2.58-2.74 whereas that of Scapolite is 2.58-2.74.