What is Lake Superior agate?
[[File:Lakesuperioragate.PNG|thumb|Lake Superior Agate from the Lake Superior region in Northern Minnesota.]] The '''Lake Superior agate''' is a type of [[agate]] stained by iron and found on the shores of [[Lake Superior]]. Its wide distribution and iron-rich bands of color reflect the gemstone's geologic history in Minnesota. In 1969 the Lake Superior agate was picked by the [[Minnesota]] Legislature as the official state gemstone. == References == * [http://www.dnr.state.mn.us/education/geology/digging/agate.html Minnesota's State Gem: The Lake Superior Agate] {{sci-stub}} [[Category:Gemstones]]