Beryl (#10) main content.

Beryl (#10)

Part of Hall of Minerals.

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This specimen is an example of a lithium replacement mineral that formed in a complex pegmatite environment.

Complex Pegmatites: Lithium Replacement Minerals
During crystallization of a magma, the residual pegmatite fluids sometimes contain exceptionally large amounts of highly soluble elements. These fluids are chemically very active and can react with minerals formed during earlier stages of crystallization.

Through their chemical activity, these fluids can likewise replace minerals formed earlier with others containing the more soluble elements — chiefly lithium, but also oth