a green mineral of the chlorite group also known as clinochlore and which contains aluminium, magnesium, and iron
ripidolite in American English
(rɪˈpɪdlˌait, rai-)
noun
a mineral of the chlorite group, essentially hydrated magnesium and aluminum silicate with some ferrous iron
Word origin
[1840–50; ‹ G Ripidolith ‹ Gk rhīpid- (s. of rhīpís) fan + -o--o- + G -lith-lite]This word is first recorded in the period 1840–50. Other words that entered Englishat around the same time include: bypass, colloid, creationism, pylon, striation-o- is the typical ending of the first element of compounds of Greek origin (as -i- is, in compounds of Latin origin), used regularly in forming new compounds with elementsof Greek origin and often used in English as a connective irrespective of etymology(Franco-Italian; geography; seriocomic; speedometer); -lite is a combining form used in the names of minerals or fossils. Other words that usethe affix -lite include: graptolite, pharmacolite, sodalite, staurolite, stylolite