Chalcedony from Keweenaw Peninsula, Michigan, USA

Agate, etc.

Wolverine No. 2 shaft, Wolverine Mine, Wolverine, Calumet Township, Houghton County, Michigan, USA

Chalcedony, etc.

No. 21 shaft, Calumet & Hecla Mine, Calumet, Calumet Township, Houghton County, Michigan, USA

Agate

Keweenaw Point, Grant Township, Keweenaw County, Michigan, USA

Agate

St. Louis Mine Exploration, Schoolcraft Township, Houghton County, Michigan, USA

Agate, etc.

Wolverine No. 2 shaft, Wolverine Mine, Wolverine, Calumet Township, Houghton County, Michigan, USA

Chalcedony, etc.

No. 21 shaft, Calumet & Hecla Mine, Calumet, Calumet Township, Houghton County, Michigan, USA

Agate

Keweenaw Point, Grant Township, Keweenaw County, Michigan, USA

Agate

St. Louis Mine Exploration, Schoolcraft Township, Houghton County, Michigan, USA

Agate, etc.

Wolverine No. 2 shaft, Wolverine Mine, Wolverine, Calumet Township, Houghton County, Michigan, USA

Chalcedony, etc.

No. 21 shaft, Calumet & Hecla Mine, Calumet, Calumet Township, Houghton County, Michigan, USA

Agate

Keweenaw Point, Grant Township, Keweenaw County, Michigan, USA

Agate

St. Louis Mine Exploration, Schoolcraft Township, Houghton County, Michigan, USA


USA
Michigan Houghton County Calumet Township Calumet Calumet & Hecla Mine ⓘ No. 21 shaft	[var. Agate] Rosemeyer, T. 2011 New from the Keweenaw: Part 4 - Recent Mineral Finds in Michigan's Copper Country. Rocks & Minerals 86:205-227
ⓘ Tamarack Waterworks Beach	[var. Agate] Yalmer Primeau collection
Wolverine ⓘ Wolverine Mine	[var. Agate] Gems and Minerals of America-Jay Ellis Ransom-1974
ⓘ Wolverine No. 2 shaft	[var. Agate] Rosemeyer, T. (2011) New from the Keweenaw: Part 4 - Recent Mineral Finds in Michigan's Copper Country. Rocks & Minerals: 86(3): 205-227 Rosemeyer, T. (2007) The Kearsarge: Copper-bearing Amygdaloidal Lode. Houghton and Keweenaw Counties, Michigan. Rocks & Minerals: 82(4): 276-297.
Hancock ⓘ Glacial till	[var. Agate] Yalmer Primeau collection
Osceola Township ⓘ La Salle Mine	[var. Agate] Larry Maltby, based on recent collecting by Tom Rosemeyer at the La Salle Mine.
Schoolcraft Township ⓘ Big Traverse Beach	[var. Agate] Yalmer Primeau collection
ⓘ St. Louis Mine Exploration	[var. Agate] Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
ⓘ Keweenaw Copper Mining District	[var. Agate] Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
Keweenaw County Allouez Township ⓘ Black Creek	[var. Agate] Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
ⓘ Five Mile Point	[var. Agate] Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
ⓘ Gratiot River	[var. Agate] Yalmer Primeau collection
Mohawk Mohawk Mine ⓘ Mohawk No. 5 shaft	[var. Agate] Yalmer Primeau collection
ⓘ Seven Mile Point	[var. Agate] Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
ⓘ Seven Mile Point Beach	[Agate var. Lake Superior Agate] Brian Cowger
ⓘ Silver Creek	[var. Agate] Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
Eagle Harbor ⓘ Agate Harbor	[var. Agate] Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
ⓘ Brockway Mountain (West Bluff)	[var. Agate] Paul Brandes field observation.
ⓘ Eagle Harbor Marina	[var. Agate] Yalmer Primeau collection
ⓘ Lakeshore traps	[var. Agate] Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp. Larry Maltby
Grant Township Bete Grise ⓘ Bete Grise Bay	[var. Agate] Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
ⓘ Copper Harbor	[var. Agate] Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
ⓘ Clark Mine	[var. Agate] Bornhorst, T.J., Rose, W.I. (1994) Self-guided geological field trip to the Keweenaw Peninsula, Michigan. Field Trip Guidebook. Institute on Lake Superior Geology Annual Meeting, Houghton, Michigan: 40(2). 185 pages.
ⓘ Horseshoe Harbor	[var. Agate] Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
ⓘ High Rock Bay	[var. Agate] Yalmer Primeau collection
ⓘ Keweenaw Point	[var. Agate] Paul T. Brandes
Houghton Township Eagle River ⓘ Eagle River	[var. Agate] Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
ⓘ Keweenaw Peninsula	King, Van (n.d.) Personal communcation.
Ontonagon County ⓘ Gull Point	[var. Agate] MacFall, P.M. (1951) Gem Hunter's Guide (1st ed.). Science and Mathematics Publishing Company, 187 pages.
Ontonagon ⓘ Lake Superior beaches	[var. Agate] Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
Rockland ⓘ National Mine	Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
White Pine ⓘ White Pine Mine	[var. Agate] Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.

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