Piccoliite from the two Italian occurrences. (a) A well-developed black crystal (1 mm) on quartz from the dump of the Montaldo di Mondovì mine. Collection Gianluca Armellino, photo Pierluigi Ambrino. The image is published in an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( http://creativecommons.org/licenses/by/4.0/ ). — Photo: Pierluigi Ambrino · CC BY 4.0
Piccoliite
Piccoliite is an IMA-recognized mineral species in the arsenate class, with the chemical formula NaCaMn³⁺₂(AsO₄)₂O(OH).
It crystallizes in the orthorhombic crystal system (space group Pbcm). It is a member of the Carminite structural group.
IMA symbol Pcc, IMA status: approved, named in 2017.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
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