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7010090 
Journal Article 
The Minerals of Lithium 
Grew, ES; , 
2020 
Yes 
Elements
ISSN: 1811-5209
EISSN: 1811-5217 
MINERALOGICAL SOC AMER 
CHANTILLY 
16 
4 
235-240 
WOS:000558907600007 
Lithium is rare in the cosmos, but the formation of continental crust has concentrated lithium into economic deposits. The 124 recognized Li mineral species occur largely in four geologic environments: (1) lithiumcesium-tantalum (LCT) granitic pegmatites and associated metasomatic rocks; (2) highly peralkaline pegmatites; (3) metasomatic rocks not directly associated with pegmatites; (4) manganese deposits. The geologically oldest Li minerals are reported from LCT pegmatites and date to 3,000-3,100 Ma, a critical period in the evolution of the continental crust and the rate of its generation. This suggests a link between the earliest appearance of LCT-family pegmatites and the onset of plate tectonics, consistent with the correlation between the observed abundance of LCT-family pegmatites and supercontinent assembly. 
lithium; mineral diversity; continental crust; supercontinent assembly; pegmatites; manganese deposits