| Locality | Mineral(s) |
|---|
| Buena Vista, Chaffee County, Colorado, USA | β Opal |
| Grand Marais, Alger County, Michigan, USA | β Chalcedony, β Lake Superior Agate, β Quartz |
| Lake Michigan Beaches, Stonington, Delta County, Michigan, USA | β Calcite, β Chalcedony, β Dolomite, β Pyrite, β Quartz |
| Balsam Pegmatite outcrop, Sturgeon River Pegmatite Quarry, Dickinson County, Michigan, USA | β Garnet Group, β Mica Group, β Microcline, β Quartz |
| No. 21 shaft, Calumet & Hecla Mine, Calumet, Calumet Township, Houghton County, Michigan, USA | β Pumpellyite Subgroup |
| South Kearsarge Mine, Kearsarge, Calumet Township, Houghton County, Michigan, USA | β Azurite, β Prehnite |
| No. 4 shaft, Osceola Mine, Osceola, Calumet Township, Houghton County, Michigan, USA | β Adularia, β Calcite, β Chlorite Group, β Datolite, β Epidote, β K Feldspar, β Native Copper, β Native Silver, β Prehnite, β Quartz, β Tenorite |
| Tamarack Waterworks Beach, Calumet Township, Houghton County, Michigan, USA | β Agate, β Calcite, β Chert, β Epidote, β Jasper, β Prehnite, β Quartz, β Thomsonite Subgroup |
| McLain State Park, Hancock Township, Houghton County, Michigan, USA | β Quartz |
| Glacial till, Hancock, Houghton County, Michigan, USA | β Agate, β Azurite, β Malachite, β Native Copper, β Quartz |
| Hancock Mine, Hancock, Houghton County, Michigan, USA | β Analcime |
| Huron Creek occurrences, Houghton, Houghton County, Michigan, USA | β Native Copper |
| Isle Royal No. 1 shaft, Isle Royal Mines, Houghton, Houghton County, Michigan, USA | β Chrysocolla |
| Sheldon-Columbian Mine, Houghton, Houghton County, Michigan, USA | β Calcite, β Milky Quartz, β Tenorite |
| Sheldon Mine, Sheldon-Columbian Mine, Houghton, Houghton County, Michigan, USA | β Calcite |
| Superior Mine (Old Superior Mine), Superior, Portage Township, Houghton County, Michigan, USA | β Datolite |
| Big Traverse Beach, Schoolcraft Township, Houghton County, Michigan, USA | β Agate, β Quartz |
| Homer Mine, Homer-Wauseca Group, Mineral Hills, Iron River, Iron County, Michigan, USA | β Celestine |
| Black Creek, Allouez Township, Keweenaw County, Michigan, USA | β Calcite, β Epidote, β Native Copper, β Prehnite |
| Avery shaft, Cliff Mine, Allouez Township, Keweenaw County, Michigan, USA | β Calcite |
| Gratiot River, Allouez Township, Keweenaw County, Michigan, USA | β Agate, β Epidote, β Prehnite, β Quartz |
| Mohawk No. 5 shaft, Mohawk Mine, Mohawk, Allouez Township, Keweenaw County, Michigan, USA | β Agate |
| Seven Mile Point, Allouez Township, Keweenaw County, Michigan, USA | β Smoky Quartz |
| Seven Mile Point Beach, Seven Mile Point, Allouez Township, Keweenaw County, Michigan, USA | β Agate, β Calcite, β Clinochlore |
| Connecticut Mine, Eagle Harbor, Keweenaw County, Michigan, USA | β Analcime, β Malachite |
| Drexel Mine, Eagle Harbor, Keweenaw County, Michigan, USA | β Adularia, β Analcime, β Calcite, β K Feldspar, β Malachite, β Prehnite |
| Eagle Harbor Marina, Eagle Harbor, Keweenaw County, Michigan, USA | β Agate, β Amethyst, β Analcime, β Calcite, β Laumontite, β Natrolite, β Plume Agate, β Quartz |
| Esrey Park, Eagle Harbor, Keweenaw County, Michigan, USA | β Malachite, β Native Copper, β Stilbite Subgroup |
| Waterbury Mine, Eagle Harbor, Keweenaw County, Michigan, USA | β Chlorastrolite, β Malachite, β Pumpellyite-(Mg) |
| Porter's Island, Copper Harbor, Grant Township, Keweenaw County, Michigan, USA | β Agate, β Amethyst, β Chlorite Group, β Natrolite, β Quartz |
| Delaware Fissure Mine, Delaware, Grant Township, Keweenaw County, Michigan, USA | β Calcite, β Native Copper |
| High Rock Bay, Grant Township, Keweenaw County, Michigan, USA | β Agate, β Analcime, β Calcite, β Chlorite Group, β Natrolite, β Quartz, β Thomsonite Subgroup |
| Mandan Sand/Gravel pit, Mandan, Grant Township, Keweenaw County, Michigan, USA | β Natrolite |
| Dana Mine, Central, Houghton Township, Keweenaw County, Michigan, USA | β Datolite |
| Humboldt Mine, Houghton Township, Keweenaw County, Michigan, USA | β Native Silver |
| Lake Superior Mine (Old Phoenix Fissure), Phoenix, Houghton Township, Keweenaw County, Michigan, USA | β Calcite, β Prehnite |
| Michigan Mine (Michigan Gold Mine), North Lake, Ely Township, Marquette County, Michigan, USA | β Calcite, β Epidote |
| Jubilee IGA grocery store site, Ishpeming, Marquette County, Michigan, USA | β Quartz |
| Mather A shaft, Mather Mine (Pioneer pellet plant; Ore improvement plant), Negaunee, Marquette County, Michigan, USA | β Pyrolusite, β Quartz |
| Oakland County, Michigan, USA | β Calcite, β Chalcopyrite, β Malachite, β Quartz |
| Ridge Mine, Mass Consolidated Mine, Mass City, Ontonagon County, Michigan, USA | β Epidote, β Quartz |
| Grand Marais, Cook County, Minnesota, USA | β Chalcedony, β Lake Superior Agate, β Quartz |
| Roadcuts, Castle Danger, Lake County, Minnesota, USA | β Calcite, β Laumontite |
| Kettle River, Pine County, Minnesota, USA | β Agate, β Quartz |
These are possibly similar items as determined by title/reference text matching only.
