Plumbogummite and Stichtite Physical Properties

Plumbogummite

Stichtite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.0142.11-2.20

1 7.18

1.5 Fracture

Uneven, Conchoidal

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Uneven

1.6 Cleavage

None

Perfect on {0001}

1.7 Mohs Hardness

4-5Not Available

2 10

1.8 Chemical Composition

Not Available

Mg 6Cr 2(CO 3)(OH) 16 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Plumbogummite and Stichtite Chemical Formula

While comparing Plumbogummite and Stichtite 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 Plumbogummite and Stichtite chemical formula.

Chemical formula of Stichtite- Mg 6Cr 2(CO 3)(OH) 16 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Plumbogummite and Stichtite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Plumbogummite and Stichtite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Plumbogummite and Stichtite Optical Properties during the identification of gemstone. Specific gravity of Plumbogummite is 2.11-2.20 whereas that of Stichtite is 2.11-2.20.