Jefersonite or Jeffersonite: How To spell?

The word Jefersonite is misspelled against Jeffersonite, a noun meaning "A variety of pyroxene of olive-green color passing into brown. It contains zinc."

Jeffersonite has double "ff" is mispronounced as "f"
Remember double 'FF' in between the strings Je & ersonite which should not be misspelled with single 'F'
Wrong Spelling:  Je-f-ersonite 
Correct Spelling:  Je-ff-ersonite 
Find more incorrect spellings of Jeffersonite to spell right way.

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