Mionite or Meionite: How To spell?

The word Mionite is misspelled against Meionite, a noun meaning "A member of the scapolite, group, occuring in glassy crystals on Monte Somma, near Naples."

Word contains consecutive vowels 'EI' in between alphabets m & onite is misspelled as 'I' as letter 'E' is phonetically ignored
Wrong Spelling:  m-i-onite 
Correct Spelling:  m-ei-onite 
Find more incorrect spellings of Meionite to spell right way.