Wolastonite or Wollastonite: How To spell?

The word Wolastonite is misspelled against Wollastonite, a noun meaning "A silicate of lime of a white to gray, red, or yellow color, occurring generally in cleavable masses, rarely in tabular crystals; tabular spar."

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