Nesquehonite is a mineral of magnesium carbonate (MgCO3).
It represents the trihydrate of magnesium carbonate, and has the total formula MgCO3·3H2O .
[2] It was described in 1890 by F. A. Genth and S. L. Penfield and is named after its type locality of Nesquehoning, Pennsylvania, where it was sampled from a coal mine.
[2] Nesquehonite can form from the related pentahydrate Lansfordite by dehydration at room temperature.
This article about a specific carbonate mineral is a stub.