Phosphosiderite and Gedrite Physical Properties

Phosphosiderite

Gedrite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

2.74-2.763.15-3.259

1 7.18

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Fracture

Uneven

Cleavage

{010} Perfect, {001} Distinct

Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.

Mohs Hardness

3.5-45.5-6

2 10

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Chemical Composition

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

(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

Phosphosiderite and Gedrite Chemical Formula

While comparing Phosphosiderite and Gedrite 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 Gedrite chemical formula.

Chemical formula of Phosphosiderite- Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)
Chemical formula of Gedrite- (Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

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Phosphosiderite and Gedrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Phosphosiderite and Gedrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phosphosiderite and Gedrite Optical Properties during the identification of gemstone. Specific gravity of Phosphosiderite is 3.15-3.259 whereas that of Gedrite is 3.15-3.259.