.	Dwarves' Earth Treasures Online Museum: Datolites of Houghton Co. Rare Locations of Houghton Co., Michigan	.

Datolites from rare locations. The datolites tend to be very sparse in those mines but they shows that the datolites can be found even in unexpected places.
 

St. Louis Mine, Calumet,  Houghton Co., Michigan	Mohawk Mine, Mohawk, Houghton Co., Michigan
Ahmeek Mine, Ahmeek, Houghton Co., Michigan	C & H Mine (Calumet & Hecla),  Calumet, Houghton Co. Michigan