Phosphosiderite and Ettringite Physical Properties

Phosphosiderite

Ettringite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

Partially soluble in water

1.3 Durability

Not Available

1.4 Specific Gravity

2.74-2.761.77

1 7.18

1.5 Fracture

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

Not Available

1.6 Cleavage

{010} Perfect, {001} Distinct

Perfect on {10 1 0}

1.7 Mohs Hardness

3.5-42-2.5

2 10

1.8 Chemical Composition

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

Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

Phosphosiderite and Ettringite Chemical Formula

While comparing Phosphosiderite and Ettringite 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 Ettringite chemical formula.

Chemical formula of Phosphosiderite- Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)
Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

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Phosphosiderite and Ettringite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Phosphosiderite and Ettringite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phosphosiderite and Ettringite Optical Properties during the identification of gemstone. Specific gravity of Phosphosiderite is 1.77 whereas that of Ettringite is 1.77.