piedmontite

From Piedmont +‎ -ite.

piedmontite (usually uncountable, plural piedmontites)

1. (mineralogy) piemontite (a manganic variety of epidote)

• “piedmontite”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.

• David Barthelmy (1997–2025) “Piedmontite”, in Webmineral Mineralogy Database.
• “piedmontite”, in Mindat.org‎^[1], Hudson Institute of Mineralogy, 2000–2025.

piedmontite f (usually uncountable, plural piedmontites)

1. alternative form of piémontite