Ytriferous or Yttriferous: How To spell?
The word Ytriferous is misspelled against Yttriferous, an adjective meaning "Bearing or containing yttrium or the allied elements; as, gadolinite is one of the yttriferous minerals."
Yttriferous has double "tt" is mispronounced as "t"Remember double 'TT' in between the strings y & riferous which should not be misspelled with single 'T'
Wrong Spelling:  y-t-riferous  Correct Spelling:  y-tt-riferous 
Check more misspelled words of Yttriferous to spell it correct.