Hercynite and Narsarsukite Physical Properties

Hercynite

Narsarsukite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.392.72-2.83

1 7.18

1.5 Fracture

ConchoidalGemdat.org, Uneven

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

1.6 Cleavage

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

Good on {100} and {110}

1.7 Mohs Hardness

7.5-86-7

2 10

1.8 Chemical Composition

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

Na 2(Ti,Fe)Si 4(O,F) 11Ulrich Henn and Claudio C.

Hercynite and Narsarsukite Chemical Formula

While comparing Hercynite and Narsarsukite 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 Narsarsukite chemical formula.

Chemical formula of Hercynite- Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
Chemical formula of Narsarsukite- Na 2(Ti,Fe)Si 4(O,F) 11Ulrich Henn and Claudio C.

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Hercynite and Narsarsukite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hercynite and Narsarsukite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hercynite and Narsarsukite Optical Properties during the identification of gemstone. Specific gravity of Hercynite is 2.72-2.83 whereas that of Narsarsukite is 2.72-2.83.