bastnaesite vs bastnasite

bastnaesite and bastnasite both are nouns.

Word	Noun	Adjective	Verb	Adverb
bastnaesite	Yes	No	No	No
bastnasite	Yes	No	No	No

As nouns, bastnaesite and bastnasite are synonyms defined as:

bastnaesite and bastnasite: a yellow-to-brown mineral that is a source of rare earth elements

bastnaesite (noun)	bastnasite (noun)
a yellow-to-brown mineral that is a source of rare earth elements	a yellow-to-brown mineral that is a source of rare earth elements