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Zinc-sulfide chimney

By Pacific Coastal and Marine Science Center
Very crusty rock with tan outer layer, gray core, and bright yellow center. Man's booted foot is in background.
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Detailed Description

Cross section of a hydrothermal vent chimney from East Diamante Caldera in the Mariana volcanic arc, west Pacific Ocean, collected during a 2010 research cruise. Most of the sample is zinc sulfide. Silica lines the conduit through which the water flowed; a trace of iron imparts the yellow color.

Sources/Usage

Public Domain.