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Formula: (NaCa2)Mn2+2(VO4)3
Anhydous normal vanadate,
berzeliite group,
manganese-bearing mineral
Crystal System: Isometric
Specific gravity: 3.63 measured, 3.78 calculated
Hardness: 5 to 5½
Streak: Brownish red
Colour: Dark red
Luminescence: Not fluorescent under UV
Solubility: Soluble in strong acids
Environments
Metmorphic environments
hydrothermal environments
Localities
At the type locality, the Molinello Mine, Ne, Genoa, Liguria, Italy, palenzonaite occurs in veinlets, about 1 mm
thick, which cut quartz-braunite ore,
and as crystals in a manganese-bearing
calcite vein 2 cm wide
(AM 73.930). It forms Wine-red anhedral grains and dodecahedral crystals up to 6 mm across. Associated minerals
include manganese-bearing
calcite, saneroite,
ganophyllite and axinite-(Mn)
(HOM, Mindat).
At Fianel, Ausserferrera, Ferrera, Viamala Region, Grisons, Switzerland, palenzonaite is associated with
medaite, saneroite,
pyrobelonite, fianelite,
parsettensite,
rhodochrosite, kutnohorite,
aegirine and quartz
(HOM).
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