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Phosphate

Sidorenkite

Na₃Mn(PO₄)(CO₃)
Hardness2
Crystal systemMonoclinic
ClassPhosphate
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Sidorenkite specimen

Sidorenkite is a Mn-Na-carbonate-phosphate Pinkish crystals of sidorenkite, a very rare mineral only known from a few localities worldwide. From: Alluaiv Mountains, Lovozero, Kola, Russian Federation. — Photo: David Hospital · CC BY-SA 4.0

Sidorenkite

Sidorenkite is an IMA-recognized mineral species in the phosphate class, with the chemical formula Na₃Mn(PO₄)(CO₃).

It crystallizes in the monoclinic crystal system (space group P2_1/m). It is a member of the Bradleyite structural group.

Key properties: Mohs hardness 2; specific gravity 2.9–3.03; Vitreous, pearly on cleavages luster; optically biaxial.

IMA symbol Sdo, IMA status: approved, named in 1978.

A rare low-temperature hydrothermal mineral, formed very late in the crystallization of hyperagpaitic pegmatites in a differentiated alkalic massif (Mt. Alluaiv, Kola Peninsula, Russia).

It is found associated with Villiaumite, kogarkoite, thermonatrite, aegirine (Mt. Alluaiv, Kola Peninsula, Russia); rasvumite, ussingite, villiaumite (Mont Saint-Hilaire, Canada).

The mineral was named to honor Academician Aleksandr Vasil’evich Sidorenko (1917–1982), noted Russian geologist, a founder of the Kola Branch of the Russian Academy of Sciences.

Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet. Browse more S minerals or help write this entry.