Hercynite and Catapleiite Physical Properties

Hercynite

Catapleiite

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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

4.392.72

1 7.18

1.5 Fracture

ConchoidalGemdat.org, Uneven

Brittle, Metallic, Brittle, Metallic

1.6 Cleavage

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

{110} Perfect, {010} Perfect

1.7 Mohs Hardness

7.5-85-6

2 10

1.8 Chemical Composition

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

Na 2ZrSi 3O 9 · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

Hercynite and Catapleiite Chemical Formula

While comparing Hercynite and Catapleiite 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 Catapleiite chemical formula.

Chemical formula of Hercynite- Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
Chemical formula of Catapleiite- Na 2ZrSi 3O 9 · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

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Hercynite and Catapleiite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hercynite and Catapleiite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hercynite and Catapleiite Optical Properties during the identification of gemstone. Specific gravity of Hercynite is 2.72 whereas that of Catapleiite is 2.72.