Plumbogummite and Gedrite Physical Properties

Plumbogummite

Gedrite

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Physical Properties

Tenacity

Brittle

Solubility

Soluble

Durability

Specific Gravity

4.0143.15-3.259

1 7.18

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Fracture

Uneven, Conchoidal

Cleavage

None

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

Mohs Hardness

4-55.5-6

2 10

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Chemical Composition

PbAl3(PO4)(SO4)(OH)6

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

Plumbogummite and Gedrite Chemical Formula

While comparing Plumbogummite 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 Plumbogummite and Gedrite chemical formula.

Chemical formula of Plumbogummite- PbAl3(PO4)(SO4)(OH)6
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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Plumbogummite and Gedrite Specific Gravity

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