Catapleiite (Na2ZrSi3O9·2H2O) is a dimorph of gaidonnayite rarely found by itself.

Its name derives from the Greek words "κατα" (kata) and "πλειον" (pleion) meaning "with more" as it is mostly accompanied by a number of rare minerals.

When pure it is colorless, but it is most often seen as a tan, brownish-red, light yellow, dark brown, flesh red or orangish in color.

It is mostly found on Låven Island, Norway.

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