pumpellyite
noun
pum·pel·ly·ite
ˌpəmˈpelēˌīt
plural -s
: a mineral Ca4(Al,Mg,Fe)6Si6O23(OH)3.2H2O(?) consisting of a hydrous calcium aluminosilicate probably related to clinozoisite
Word History
Etymology
Raphael Pumpelly †1923 American geologist + English -ite