Alleghanyite is a moderately rare humite mineral with formula Mn₅(SiO₄)₂(OH)₂, belonging to the nesosilicates class. In general its occurrences are related with

metamorphic Metamorphic rocks arise from the transformation of existing rock to new types of rock in a process called metamorphism. The original rock (protolith) is subjected to temperatures greater than and, often, elevated pressure of or more, causi ...

(metamorphosed) manganese deposits. The mineral is named after Alleghany County,

North Carolina North Carolina () is a U.S. state, state in the Southeastern United States, Southeastern region of the United States. The state is the List of U.S. states and territories by area, 28th largest and List of states and territories of the United ...

, US.

References

Manganese(II) minerals Humite group Monoclinic minerals Minerals in space group 14 {{silicate-mineral-stub

See also

References