Flow from the lake to the Minnesota River is regulated by the Big Stone Lake Dam, built in 1937 at the lake’s southern end.- Rhodonite (Wikipedia)
Rhodonite is a manganese inosilicate, with the formula (Mn, Fe, Mg, Ca)SiO3, and member of the pyroxenoid group of minerals, crystallizing in the triclinic system. It commonly occurs as cleavable to compact masses with a rose-red color (its name comes from Ancient Greek ῥόδον (rhódon) ‘rose’), often tending to brown due to surface oxidation. The rose-red hue is caused by the manganese cation (Mn2+).
- Big Stone Lake (Wikipedia)
Big Stone Lake (Dakota: Íŋyaŋ Tháŋka Bdé) is a long, narrow freshwater lake and reservoir on the border between western Minnesota and northeastern South Dakota in the United States.