Grenockite or Greenockite: How To spell?
The word Grenockite is misspelled against Greenockite, a noun meaning "Native cadmium sulphide, a mineral occurring in yellow hexagonal crystals, also as an earthy incrustation."
Greenockite has double "ee" is mispronounced as "e"Remember double 'EE' in between the strings Gr & nockite which should not be misspelled with single 'E'
Wrong Spelling:  Gr-e-nockite  Correct Spelling:  Gr-ee-nockite 
Find more incorrect spellings of Greenockite to spell right way.