Hercynite and Diaspore Physical Properties

Hercynite

Diaspore

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1 Physical Properties

1.1 Tenacity

Not Available

Very brittle

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

4.393.30-3.40

1 7.18

1.5 Fracture

ConchoidalGemdat.org, Uneven

Conchoidal, Brittle, Conchoidal

1.6 Cleavage

{111} Indistinct, {111} Indistinct, {111} Indistinct

{010} perfect, {110} distinct, {100} in traces

1.7 Mohs Hardness

7.5-86.5-7

2 10

1.8 Chemical Composition

Fe2+ Al 2O 4Gemdat.org , Management Team (2012)

AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Hercynite and Diaspore Chemical Formula

While comparing Hercynite and Diaspore 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 Hercynite and Diaspore chemical formula.

Chemical formula of Hercynite- Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
Chemical formula of Diaspore- AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references

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Hercynite and Diaspore Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hercynite and Diaspore Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hercynite and Diaspore Optical Properties during the identification of gemstone. Specific gravity of Hercynite is 3.30-3.40 whereas that of Diaspore is 3.30-3.40.