piedmontite

[peed-mon-tahyt]

noun

a mineral, similar to epidote but containing manganese: found in schists and manganese ores.

Origin of piedmontite

From German, dating back to 1850–55; see origin at Piedmont, -ite¹

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Examples from the Web for piedmontite

Historical Examples of piedmontite

Amongst the latter, in Shikoku, there is an extremely interesting rock consisting largely of piedmontite.
Encyclopaedia Britannica, 11th Edition, Volume 15, Slice 2
Various

British Dictionary definitions for piedmontite

piedmontite

piemontite

noun

a dark red mineral occurring in metamorphic rocks: a complex hydrated silicate containing calcium, aluminium, iron, and manganese. Formula: Ca 2 (Al,Fe,Mn) 3 (SiO 4) 3 OH

Word Origin for piedmontite

C19: from Piedmont in Italy

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