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Jacobsite
Jacobsite

Willemite
Willemite



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Jacobsite
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Jacobsite and Willemite Physical Properties

Physical Properties

Tenacity

-
-

Solubility

-
-

Durability

-
-

Specific Gravity

4.76-5.033.89-4.18
1 7.18
👆🏻

Fracture

Conchoidal
Conchoidal, Uneven

Cleavage

None
{0001}, {11 2 0} imperfect

Mohs Hardness

5.5-6.55.5
2 10
👆🏻

Chemical Composition

(Mn2+ ,Fe2+ ,Mg)(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
Zn 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Jacobsite and Willemite Chemical Formula

While comparing Jacobsite and Willemite 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 Jacobsite and Willemite chemical formula.

  • Chemical formula of Jacobsite- (Mn2+ ,Fe2+ ,Mg)(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
  • Chemical formula of Willemite- Zn 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Jacobsite and Willemite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Jacobsite and Willemite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Jacobsite and Willemite Optical Properties during the identification of gemstone. Specific gravity of Jacobsite is 3.89-4.18 whereas that of Willemite is 3.89-4.18.