Crystalogeny or Crystallogeny: How To spell?

The word Crystalogeny is misspelled against Crystallogeny, a noun meaning "The science which pertains to the production of crystals."

Crystallogeny has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings crysta & ogeny which should not be misspelled with single 'L'
Wrong Spelling:  crysta-l-ogeny 
Correct Spelling:  crysta-ll-ogeny 
Find more incorrect spellings of Crystallogeny to spell right way.