Abstract

The sediments of Newark Bay, New Jersey, contain zinc sulfide minerals as shown by scanning electron microscopy with energy dispersive X-ray analysis. This is the first report of framboidal sulfide minerals which contain a cation other than iron as the major constituent in recent estuarine sediments. Nickel and manganese are incorporated into the structure of pyrite and iron monosulfide crystals, respectively. These crystals are formed during sulfate reduction to sulfides in the estuarine system.

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