What is "spongiolite"

Spongiolite \Spon"gi*o*lite\ (-[-o]*l[imac]t), n. [Gr. spoggia` sponge + -lite.] (Paleon.) One of the microscopic siliceous spicules which occur abundantly in the texture of sponges, and are sometimes found fossil, as in flints.

n. (context paleontology English) One of the microsporic siliceous spicules which occur abundantly in the texture of sponges, and are sometimes found fossilized, as in flints.