A granitic rock consisting of orthoclase, quartz, and hypersthene (a type of igneous rock found in metamorphic settings).
Named after Job Charnock, the founder of Calcutta, who observed this rock in India in the 1690s. Geologists named it in his honor.
Job Charnock was a Calcutta founder and merchant, not a geologist, but 200 years later geologists honoring early British observations in India named an entire rock type after him—naming what you study after who found it!
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