Ullmanite or Ullmannite: How To spell?
The word Ullmanite is misspelled against Ullmannite, a noun meaning "A brittle mineral of a steel-gray color and metallic luster, containing antimony, arsenic, sulphur, and nickel."
Ullmannite has double "nn" is mispronounced as "n"Remember double 'NN' in between the strings ullma & ite which should not be misspelled with single 'N'
Wrong Spelling:  ullma-n-ite  Correct Spelling:  ullma-nn-ite 
Find more wrongly spelled words of Ullmannite to spell it well.