Hureaulite is a manganese phosphate with the formula .
It was discovered in 1825 and named in 1826 for the type locality, Les Hureaux, Saint-Sylvestre, Haute-Vienne, Limousin, France.
It is sometimes written as huréaulite, but the IMA does not recommend this for English language text.Burke, E. A. J. (2008): Tidying up Mineral Names: An IMA scheme for Suffixes, Hyphens and Diacritical Marks.
Mineralogical Record, 39, 134
A complete series exists from lithiophilite,  to triphylite, , including hureaulite, strengite, , stewartite, , and sicklerite, .Murdoch, Joseph (1943) Crystallography of Hureaulite.
American Mineralogist 28: 19-24 Environment
Hureaulite is a secondary mineral occurring in granite pegmatites.
At the type locality it occurs in a zone of altered triphylite, , in pegmatite.
Typically occurs very late in the sequence of formation of secondary phosphate minerals.Moore, P B, and Araki, T (1973) Hureaulite: its atomic arrangement.
American Mineralogist 58: 302-307.
Associated at the type locality with vivianite, ; rockbridgeite, ; heterosite,  and cacoxenite, .
It can be synthesised;Gerault, Y, Riou, A, and Cudennec, Y (1987) Acta Crystallographica (C) 43:1829 most natural hureaulites are Mn-rich compounds but extensive () solution is known for synthetic material.
Localities
The type locality is Les Hureaux, Saint-Sylvestre, Haute-Vienne, Limousin, France.
Hureaulite is also found in a granite pegmatite known for its phosphates in the Aimorés pegmatite district, at the Cigana claim in Galiléia, Doce valley, Minas Gerais, Brazil, formerly known as the Jocão Mine.
References
