Jacobsite and Dallasite Physical Properties

Jacobsite

Dallasite

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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

4.76-5.032.58-2.91

1 7.18

1.5 Fracture

Conchoidal, Brittle

Not Available

1.6 Cleavage

None

Not Available

1.7 Mohs Hardness

5.5-6.56.5-7

2 10

1.8 Chemical Composition

(Mn2+ ,Fe2+ ,Mg)(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)

Not Available

Jacobsite and Dallasite Chemical Formula

While comparing Jacobsite and Dallasite 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 Dallasite chemical formula.

Chemical formula of Jacobsite- (Mn2+ ,Fe2+ ,Mg)(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)

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Jacobsite and Dallasite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Jacobsite and Dallasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Jacobsite and Dallasite Optical Properties during the identification of gemstone. Specific gravity of Jacobsite is 2.58-2.91 whereas that of Dallasite is 2.58-2.91.