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leucophoenicite

n. (context mineralogy English) A monoclinic-prismatic mineral containing hydrogen, manganese, oxygen, and silicon.

Wikipedia
Leucophoenicite

Leucophoenicite is a mineral with formula Mn(SiO)(OH). Generally brown to red or pink in color, the mineral gets its name from the Greek words meaning "pale purple-red". Leucophoenicite was discovered in New Jersey, US and identified as a new mineral in 1899.