Where does “plumbocalcite” come from?

plumbocalcite (English) comes from English plumbo-, from Latin plumbum, from Ancient Greek μόλυβδος, from Proto-Indo-European morkʷ-iyo-.

plumbocalcite (English): A variety of calcite that contains some lead...

Definitions

Step	Language	Word	Meaning
1	English	plumbo-	lead
2	Latin	plumbum	lead; ball of lead; pipe of lead
3	Ancient Greek	μόλυβδος	lead; graphite
4	Proto-Indo-European	morkʷ-iyo-	—

plumbocalcite — Etymology, Origin & Word History | Etymology Explorer