Which mineral reacts readily with cool, dilute hydrochloric acid to produce visible bubbles of carbon dioxide gas?
A) calcite
B) gypsum
C) quartz
D) plagioclase

Question

Quizplus · Accepted Answer

Calcite is a mineral that reacts readily with cool, dilute hydrochloric acid to produce visible bubbles of carbon dioxide gas. This reaction is often used to identify calcite in the field. Gypsum and quartz do not react with hydrochloric acid, and the reaction of plagioclase with hydrochloric acid is usually weak or nonexistent.

Which Mineral Reacts Readily with Cool, Dilute Hydrochloric Acid to Produce