Kovdorskite is a rare mineral found exclusively in the Kovdor massif on the Kola Peninsula. A pure mineral has no color. Iron impurities turn it blue, and manganese - pink.
You can see kovdorskite stone for sale and buy it in the Minerals of Russia online store.
General | |
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Category | Phosphate minerals |
Formula (repeating unit) |
Mg2PO4(OH)·3H2O |
IMA symbol | Kov |
Strunz classification | 8.DC.22 |
Dana classification | 43.05.08.01 |
Crystal system | Monoclinic |
Crystal class | Prismatic (2/m) (same H-M symbol) |
Space group | P21/n |
Unit cell | a = 10.35, b = 12.90 c = 4.73 [Å]; Z = 4 |
Identification | |
Color | Translucent white to pale blue to bright pink |
Crystal habit | Rough prismatic |
Fracture | Conchoidal to uneven |
Mohs scale hardness | 4 |
Luster | Vitreous |
Specific gravity | 2.28 (measured), 2.30 (calculated) |
Optical properties | Biaxial (-) |
Refractive index | nα = 1.527 nβ = 1.542 nγ = 1.549 |
Birefringence | δ = 0.022 |
2V angle | 80°-82° (measured) |
Dispersion | r > v, very weak |