Earth Science Question:

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Give the common name of the historic mineral that was the original source of radium and the first substance in which helium was discovered on earth:

Earth Science Interview Question
Earth Science Interview Question

Answer:

Pitchblende

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Which equinox marks the moment when fall begins in the Northern Hemisphere?The name of this mineral is derived from the Latin word which means "to flow". One of its major uses is as a flux to help melt iron ore. What is its name?