nagatelite
noun
nag·a·tel·ite
| \ ˌnagəˈteˌlīt\
plural -s
Definition of nagatelite
: a rare mineral Ca2(Ce,La)2Al4Fe2(Si,P)6O25(OH)(?) that consists of phosphosilicate of aluminum, the rare earths, calcium, and iron, that is related to clinozoisite, and that occurs in black tabular masses
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