pyrrhotine vs pyrrhotite

pyrrhotine and pyrrhotite both are nouns.

Word	Noun	Adjective	Verb	Adverb
pyrrhotine	Yes	No	No	No
pyrrhotite	Yes	No	No	No

As nouns, pyrrhotine and pyrrhotite are synonyms defined as:

pyrrhotine and pyrrhotite: a brownish iron sulfide mineral (FeS) having weak magnetic properties

Other synonyms of pyrrhotine include magnetic pyrites.

pyrrhotine (noun)	pyrrhotite (noun)
a brownish iron sulfide mineral (FeS) having weak magnetic properties	a brownish iron sulfide mineral (FeS) having weak magnetic properties