pisolite, pisolite, from, ancient, greek, πίσον, píson, sedimentary, rock, made, pisoids, which, concretionary, grains, typically, calcium, carbonate, which, resemble, ooids, more, than, diameter, these, grains, approximately, spherical, have, concentric, laye. A pisolite from Ancient Greek pison pison pea is a sedimentary rock made of pisoids which are concretionary grains typically of calcium carbonate which resemble ooids but are more than 2 mm in diameter 1 These grains are approximately spherical and have concentric layers reaching 10 mm in diameter Pisoids in the Conococheague limestone Upper Cambrian of eastern Pennsylvania Pisolitic limestone Itaborai Rio de Janeiro Brazil pisolith diameters average 1 0 cm QEMSCAN mineral map of bauxite forming pisoids Bauxites limonites and siderites often have a pisolitic structure See also editOoid OoliteReferences edit Mindat PisoliteFurther reading editManutchehr Danai Mohsen 2009 Dictionary of gems and gemology 3rd ed Springer ISBN 978 3 540 72795 8 nbsp This sedimentary rock related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Pisolite amp oldid 1220179868, wikipedia, wiki, book, books, library,