.	Dwarves' Earth Treasures Online Museum: Datolites of Keweenaw County Various Mines of Keweenaw Co., Michigan	.

    There are many mines of Michigan that rarely produce any datolites at all or it's just that I was seeing too few datolites coming from the mines listed below.

Cliff Mine, Cliff, Keweenaw Co, Michigan	South Cliff Mine, Cliff, Keweenaw Co, Michigan	Gatriot Mine, Keweenaw County, MI
	...
North American Mine (north of Phoenix) Keweenaw Co., MI	Bohemian Mine Keweenaw Co., MI	St. Clair Mine,  Central, Keweenaw Co., Michigan

Found by Jeffrey Anderson, South Cliff, Keweenaw Co., Mi with prehnite and calcite, August 2009	Arnold Mine, Keweenaw Co. Michigan With copper inclusions