Crystalography or Crystallography: How To spell?

The word Crystalography is misspelled against Crystallography, a noun meaning "A discourse or treatise on crystallization."

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