<p><strong>Fig. 7.63.</strong>&nbsp;(<strong>B</strong>) White smokers emit minerals such as barium, calcium, and silicon, Champagne Vent, Marianas Islands Marine National Monument.</p>

Fig. 7.63. (B) White smokers emit minerals such as barium, calcium, and silicon, Champagne Vent, Marianas Islands Marine National Monument.

Images courtesy of National Oceanic and Atmospheric Administration (NOAA)