Piedmontite (noun) Definition, Meaning & Examples

noun
  1. a mineral, similar to epidote but containing manganese: found in schists and manganese ores.
noun
  1. 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
Piedmontite (noun) Definition, Meaning & Examples

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