Faustite and Agrellite Physical Properties

Faustite

Agrellite

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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

2.92.88

1 7.18

1.5 Fracture

Conchoidal, ConchoidalAnthony et al, Conchoidal, Brittle, Conchoidal

Not Available

1.6 Cleavage

{???} Indistinct

perfect [110]

1.7 Mohs Hardness

4.55.5

2 10

1.8 Chemical Composition

(Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

NaCa2Si4O10F

Faustite and Agrellite Chemical Formula

While comparing Faustite and Agrellite 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 Faustite and Agrellite chemical formula.

Chemical formula of Faustite- (Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Agrellite- NaCa2Si4O10F

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Faustite and Agrellite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Faustite and Agrellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Faustite and Agrellite Optical Properties during the identification of gemstone. Specific gravity of Faustite is 2.88 whereas that of Agrellite is 2.88.