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Which of the following mineral shows phosphorescence?

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in Engineering Geology by (962k points)
Which of the following mineral shows phosphorescence?

(a) Orthoclase

(b) Calcite

(c) Quartz

(d) Galena

I got this question in an international level competition.

Enquiry is from Physical Properties topic in section The Study of Minerals of Engineering Geology

1 Answer

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Best answer
Right choice is (c) Quartz

The best explanation: Phosphorescence is similar to fluorescence in essential character but in this case light is emitted by mineral not during the act of exposure but after the substance is transferred rapidly to a dark place. Fluorite, quartz, willemite and diamond show this phenomenon.

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