Faustite and Phosphosiderite Physical Properties

Faustite

Phosphosiderite

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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

2.92.74-2.76

1 7.18

1.5 Fracture

Conchoidal, ConchoidalAnthony et al, Conchoidal, Brittle, Conchoidal

UnevenAnthony et al, Handbook of mineralogy (2001), UnevenAnthony et al, Handbook of mineralogy (2001), Uneven

1.6 Cleavage

{???} Indistinct

{010} Perfect, {001} Distinct

1.7 Mohs Hardness

4.53.5-4

2 10

1.8 Chemical Composition

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

Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)

Faustite and Phosphosiderite Chemical Formula

While comparing Faustite and Phosphosiderite 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 Phosphosiderite 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 Phosphosiderite- Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)

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Faustite and Phosphosiderite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Faustite and Phosphosiderite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Faustite and Phosphosiderite Optical Properties during the identification of gemstone. Specific gravity of Faustite is 2.74-2.76 whereas that of Phosphosiderite is 2.74-2.76.