Pyrhotite or Pyrrhotite: How To spell?
The word Pyrhotite is misspelled against Pyrrhotite, a noun meaning "A bronze-colored mineral, of metallic luster. It is a sulphide of iron, and is remarkable for being attracted by the magnet. Called also magnetic pyrites."
Pyrrhotite has double "rr" is mispronounced as "r"Remember double 'RR' in between the strings py & hotite which should not be misspelled with single 'R'
Wrong Spelling:  py-r-hotite  Correct Spelling:  py-rr-hotite 
Find more incorrect spellings of Pyrrhotite to spell right way.