Goethite in Radular Teeth of Recent Marine Gastropods

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Science  27 Jul 1962:
Vol. 137, Issue 3526, pp. 279-280
DOI: 10.1126/science.137.3526.279


The x-ray diffraction patterns of the denticle material from several species show that the material consists of the mineral goethite. This is the first indication that goethite is precipitated by marine invertebrates. The mineralogy of the denticle caps has biologic and geologic implications.