ˈrōbliŋˌīt noun
( -s )
Etymology: Washington A. Roebling died 1926 American civil engineer + English -ite
: a mineral supposedly Ca 7 Pb 2 H 10 (SO 4 ) 2 (SiO 4 ) 6 consisting of an acid lead calcium silicate and sulfate occurring in white crystalline masses (hardness 3, specific gravity 3.4)