Ferocalcite or Ferrocalcite: How To spell?

The word Ferocalcite is misspelled against Ferrocalcite, a noun meaning "Limestone containing a large percentage of iron carbonate, and hence turning brown on exposure."

Ferrocalcite has double "rr" is mispronounced as "r"
Remember double 'RR' in between the strings fe & ocalcite which should not be misspelled with single 'R'
Wrong Spelling:  fe-r-ocalcite 
Correct Spelling:  fe-rr-ocalcite 
Find more incorrect spellings of Ferrocalcite to spell right way.

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