Dravite and Phosphosiderite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.03-3.18
2.74-2.76
Fracture
Uneven, Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
UnevenAnthony et al, Handbook of mineralogy (2001), UnevenAnthony et al, Handbook of mineralogy (2001), Uneven
Cleavage
{???} Indistinct
{010} Perfect, {001} Distinct
Mohs Hardness
7-7.5
3.5-4
Chemical Composition
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)
Dravite and Phosphosiderite Chemical Formula
While comparing Dravite and Phosphosiderite 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 Dravite and Phosphosiderite chemical formula.
- Chemical formula of Dravite- Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
- Chemical formula of Phosphosiderite- Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)
Dravite and Phosphosiderite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Dravite and Phosphosiderite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dravite and Phosphosiderite Optical Properties during the identification of gemstone. Specific gravity of Dravite is 2.74-2.76 whereas that of Phosphosiderite is 2.74-2.76.