Humite and Ludlamite Physical Properties

Humite and Ludlamite Chemical Formula

While comparing Humite and Ludlamite 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 Humite and Ludlamite chemical formula.

• Chemical formula of Humite- (Mg,Fe2+ ) 7(SiO 4) 3(F,OH) 2Anthony et al , Handbook of mineralogy (2001)
• Chemical formula of Ludlamite- (Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Humite and Ludlamite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Humite and Ludlamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Humite and Ludlamite Optical Properties during the identification of gemstone. Specific gravity of Humite is 3.1-3.2 whereas that of Ludlamite is 3.1-3.2.