Krasnovite

krasnovite

hydrotalcite

crandallite

fluorapatite

Images

Formula: Ba(Al,Mg)(PO4,CO3)(OH)2.H2O
Hydrated phosphate, barium-bearing mineral
Crystal System: Orthorhombic
Specific gravity: 3.70 measured,  3.691 calculated
Hardness: 2
Streak: White
Colour: Pale blue
Luminescence: Not fluorescent under UV
Solubility: Decomposes with effervescence in warm 10% hydrochloric acid
Environments

Carbonatites

Localities

At the type locality, the Kovdor Zheleznyi Mine, Kovdor Massif, Murmansk Oblast, Russia, krasnovite occurs as spherulites, up to 3 mm across, consisting of pale blue fibres, in a dolomite carbonatite. Associated minerals include hydrotalcite-2H, crandallite, carbonate-rich fluorapatite and baryte (Mindat).
Other magnesium phosphates found at this locality include kovdorskite, bonshtedtite, girvasite, strontiowhitlockite, rimkorolgite, juonniite, gladiusite, collinsite, barićite and bobierrite (CM 38.831-838).
The barium incorporated into krasnovite is extracted from carbonates (CM 44.117-123).

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