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Marcasite
Marcasite

Howlite
Howlite



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Marcasite
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Howlite

Marcasite and Howlite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
4.80-4.90
Uneven
{010} Indistinct
6-6.5
FeS 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
 
-
-
-
2.45-2.58
Conchoidal
None
3-3.5
Ca 2B 5SiO 9(OH) 5Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Marcasite and Howlite Chemical Formula

While comparing Marcasite and Howlite 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 Marcasite and Howlite chemical formula.

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Marcasite and Howlite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Marcasite and Howlite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Marcasite Vs Howlite during the identification of gemstone. Specific gravity of Marcasite is whereas that of Howlite is .