jinis
Batu igneous
Flint, jasper, radiolarite, chert umum, chalcedony, agate, onyx, opal, magadi-jinis chert, porcelanite, Sinter siliceous
fitur
kasedhiya ing persil saka werna lan patron, clasts Gamelan kanggo tutul, splintery, rock grained banget nggoleki
clasts Gamelan kanggo tutul, gampang pecah dadi lancip piring, tahan struktural dhuwur marang erosi lan iklim