ˈriktəˌrīt noun
( -s )
Etymology: German richterit, from Theodor Richter died 1898 German metallurgical chemist + German -it -ite
: a mineral (Na,K) 2 (Mg,Mn,Ca) 6 Si 8 O 22 (OH) 2 that is a variety of amphibole containing as bases sodium, magnesium, manganese, potassium, and calcium