Tags: chert, conodont, pelozite, Torlesse
Tags: biogenic silica, chert, clay, hydrogenous metals
Tags: banded, chert, clinopyroxene, relict
Tags: chert, greenschist, limestone, prehnite-pumpellyite, Waihemo Fault Complex
Tags: chert, marble, Rapuwai Fault, Torlesse Supergroup
Tags: chert, textural zone, Tuapeka Group
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