polymignyte
Noun
Meaning
polymignyte (countable and uncountable, plural polymignytes)
(mineralogy) A mineral consisting of columbate (a compound containing the element niobium) and oxides of the cerium group of elements with iron and calcium.
Noun
polymignyte (countable and uncountable, plural polymignytes)
(mineralogy) A mineral consisting of columbate (a compound containing the element niobium) and oxides of the cerium group of elements with iron and calcium.