Norbergite and Howlite Physical Properties

Norbergite

Howlite

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.1772.45-2.58

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

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

1.6 Cleavage

{???} Distinct

None

1.7 Mohs Hardness

6-6.53-3.5

2 10

1.8 Chemical Composition

Mg 3(SiO 4)(F,OH) 2Anthony et al , Handbook of Mineralogy (2001)

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

Norbergite and Howlite Chemical Formula

While comparing Norbergite 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 Norbergite and Howlite chemical formula.

Chemical formula of Norbergite- Mg 3(SiO 4)(F,OH) 2Anthony et al , Handbook of Mineralogy (2001)
Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Yellow Gemstones

Norbergite Vs Powellite

Norbergite Vs Prase Opal

Norbergite Vs Precious Opal

Norbergite and Howlite Specific Gravity

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