: a mineral PbAl3(PO4)2(OH)5.H2O consisting of a hydrous basic phosphate of lead and aluminum
2
: a group of isostructural minerals consisting of plumbogummite, gorceixite, goyazite, crandallite, deltaite, florencite, and dussertite and related to alunite and other sulfates isostructural with it
Word History
Etymology
plumb- + gumm- (from Latin gummi gum) + -ite
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