Agrellite and Spinel Physical Properties

Agrellite

Spinel

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

none

1.3 Durability

Not Available

1.4 Specific Gravity

2.883.64-3.66

1 7.18

1.5 Fracture

Not Available

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

perfect [110]

None, but may exhibit slight parting

1.7 Mohs Hardness

5.58

2 10

1.8 Chemical Composition

NaCa2Si4O10F

MgAl₂O₄

Agrellite and Spinel Chemical Formula

While comparing Agrellite and Spinel 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 Agrellite and Spinel chemical formula.

Chemical formula of Agrellite- NaCa2Si4O10F
Chemical formula of Spinel- MgAl₂O₄

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Agrellite and Spinel Specific Gravity

Another important criteria for qualitative analysis of gemstones is Agrellite and Spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Agrellite and Spinel Optical Properties during the identification of gemstone. Specific gravity of Agrellite is 3.64-3.66 whereas that of Spinel is 3.64-3.66.