ˈfilə̇pˌsīt noun
( -s )
Etymology: William Phillips died 1828 English mineralogist and geologist + English -ite
: a white or reddish mineral approximately (K 2 ,Na 2 ,Ca)Al 2 Si 4 O 12 .4 1/2H 2 O consisting of a hydrous silicate of potassium, calcium, and aluminum, belonging to the zeolite family, and commonly occurring in complex often cruciform crystals (hardness 4-4.5, specific gravity 2.2)