Braccoite

Facts

Chemical formula

NaMn²⁺₅[Si₅O₁₄(OH)](AsO₃)(OH)

Crystal system

Triclinic

Elements in formula

Sodium, Manganese, Silicon, Oxygen, Hydrogen, Arsenic

Number of elements

6

IMA status

Approved

Type locality

Valletta mine

Named after

Roberto Bracco

Sources: Wikidata (CC0), IMA list of minerals via Wikidata · Wikidata Q19810690