Phosphosiderite and Gypsum Physical Properties

Phosphosiderite

Gypsum

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1 Physical Properties

1.1 Tenacity

Not Available

Flexible

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.74-2.762.20-2.40

1 7.18

1.5 Fracture

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

Conchoidal, Splintery, Fibrous, UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

{010} Perfect, {001} Distinct

Perfect on {010}, distinct on {100}

1.7 Mohs Hardness

3.5-42

2 10

1.8 Chemical Composition

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

CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)

Phosphosiderite and Gypsum Chemical Formula

While comparing Phosphosiderite and Gypsum 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 Phosphosiderite and Gypsum chemical formula.

Chemical formula of Phosphosiderite- Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)
Chemical formula of Gypsum- CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)

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Phosphosiderite and Gypsum Specific Gravity

Another important criteria for qualitative analysis of gemstones is Phosphosiderite and Gypsum Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phosphosiderite and Gypsum Optical Properties during the identification of gemstone. Specific gravity of Phosphosiderite is 2.20-2.40 whereas that of Gypsum is 2.20-2.40.