Iddingsite and Howlite Physical Properties

Iddingsite

Howlite

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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

2.5-2.82.45-2.58

1 7.18

1.5 Fracture

Not Available

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

{???} Perfect

None

1.7 Mohs Hardness

33-3.5

2 10

1.8 Chemical Composition

MgO.Fe2O3.3SiO2•4(H2O)

Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Iddingsite and Howlite Chemical Formula

While comparing Iddingsite and Howlite 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 Iddingsite and Howlite chemical formula.

Chemical formula of Iddingsite- MgO.Fe2O3.3SiO2•4(H2O)
Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Iddingsite and Howlite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Iddingsite and Howlite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iddingsite and Howlite Optical Properties during the identification of gemstone. Specific gravity of Iddingsite is 2.45-2.58 whereas that of Howlite is 2.45-2.58.