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Calcium carbonate is the 26th clue. It is a Lucian clue and was located in Area 51, U.S.A.

HistoryEdit

It is unknown when or how this clue was placed in Area 51. However, the Lucians protected this clue so much that they kidnapped anyone who got too close and made it seem like it had been an alien abduction.

Calcium carbonateEdit

Calcium carbonate is a mixture of calcium, carbon, and oxygen (CaCO3). It neutralizes hydrochloric acid (HCl).