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Silicate

Proto-ferro-suenoite

Mn²⁺₂Fe²⁺₅Si₈O₂₂(OH)₂
Crystal systemOrthorhombic
ClassSilicate
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Proto-ferro-suenoite specimen

Proto-ferro-suenoite is a very rare mineral known from only two localities (2016). It occurs acicular crystals in wheat formed aggregates together with rhodonite, pyroxmangite, spessartine and rhodochrosite at the type locality and as an small (sub-mm to mm) fibres as an alteration product of Mn-rich fayalite. This specimen was adquired in 2015 to A. Petrov. Very rare species. Locality: Suishoyama pegmatite, Iizaka, Kawamata, Fukushima, Japan Size: 2.5 × 1.8 × 1.6 cm — Photo: Joan Rosell , from rosellminerals.com · CC BY-SA 4.0

Proto-ferro-suenoite

Proto-ferro-suenoite is an IMA-recognized mineral species in the silicate class, with the chemical formula Mn²⁺₂Fe²⁺₅Si₈O₂₂(OH)₂.

It crystallizes in the orthorhombic crystal system. It is a member of the Amphibole structural group.

IMA symbol Pfsue, IMA status: approved, named in 1986.

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 P minerals or help write this entry.