Jacobsite and Apophyllite KF Physical Properties

Jacobsite

Apophyllite KF

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

4.76-5.032.33-2.37

1 7.18

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Fracture

Conchoidal

Uneven

Cleavage

None

Perfect on {001}, imperfect on {110}

Mohs Hardness

5.5-6.54.5-5

2 10

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Chemical Composition

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

(K,Na)Ca4Si8O20(F,OH)•8(H2O)

Jacobsite and Apophyllite KF Chemical Formula

While comparing Jacobsite and Apophyllite KF 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 Apophyllite KF chemical formula.

Chemical formula of Jacobsite- (Mn2+ ,Fe2+ ,Mg)(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Apophyllite KF- (K,Na)Ca4Si8O20(F,OH)•8(H2O)

Compare Brown Gemstones

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Jacobsite Vs Sonolite

Jacobsite Vs Staurolite

Jacobsite and Apophyllite KF Specific Gravity

Another important criteria for qualitative analysis of gemstones is Jacobsite and Apophyllite KF Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Jacobsite and Apophyllite KF Optical Properties during the identification of gemstone. Specific gravity of Jacobsite is 2.33-2.37 whereas that of Apophyllite KF is 2.33-2.37.