Fluororichterite, Calcite

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Fluororichterite is a very rare amphibole group species. This fine combination specimen is from the well-known Earle's Farm occurrence in Ontario. Brilliant, grayish-black, preferentially striated fluororichterite prisms are set in contrasting calcite matrix. The prominent large crystal in front is 4.7 cm and is doubly terminated, with no damage. Highly representative combo material from this noted locale.