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Quartz from Lake Superior, North America

02561200014946311463484.jpg
Agate

Keweenaw Point, Grant Township, Keweenaw County, Michigan, USA
06379240014947082319914.jpg
Lake Superior Agate

Manitou Island, Grant Township, Keweenaw County, Michigan, USA
01631260014946859176350.jpg
Lake Superior Agate

Lake Superior, North America
07836760014947328006207.jpg
Agate

Manitou Island, Grant Township, Keweenaw County, Michigan, USA
06344450015860323907188.jpg
Agate

Keweenaw Point, Grant Township, Keweenaw County, Michigan, USA
09580730014946590252033.jpg
Lake Superior Agate

Manitou Island, Grant Township, Keweenaw County, Michigan, USA
01631260014946859176350.jpg
Lake Superior Agate

Lake Superior, North America
08406420014946590259423.jpg
Agate

Manitou Island, Grant Township, Keweenaw County, Michigan, USA
02561200014946311463484.jpg
Agate

Keweenaw Point, Grant Township, Keweenaw County, Michigan, USA
06379240014947082319914.jpg
Lake Superior Agate

Manitou Island, Grant Township, Keweenaw County, Michigan, USA
01631260014946859176350.jpg
Lake Superior Agate

Lake Superior, North America
07836760014947328006207.jpg
Agate

Manitou Island, Grant Township, Keweenaw County, Michigan, USA
Canada
 
  • Ontario
    • Thunder Bay District
      • Sibley Township
        • Silver Islet
Wilson, W.E. (1986). Famous mineral localities: the Silver Islet mine, Ontario. The Mineralogical Record, 17, 49-60.
Sessional papers (1908) - Legislature of the Province of Ontario, Volume XL Part 1
      • Spar and Victoria Islands Area
Sabina, Ann P. (1991) Rocks and minerals for the collector, Sudbury to Winnipeg. Miscellaneous report 49. Geological Survey of Canada
North America
 
[Agate var. Lake Superior Agate] Paul T. Brandes
USA
 
  • Michigan
    • Chippewa County
[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
[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] Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
      • Grant Township
        • Bete Grise
[Agate] Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
Yalmer Primeau collection
[var. Amethyst] Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
[var. Amethyst] Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
      • Houghton Township
        • Eagle River
Bornhorst, T.J., Barron, R.J. (2011) Copper deposits of the western Upper Peninsula of Michigan. The Geological Society of America Field Guide 24: 83-99.
      • Isle Royale National Park
[Agate] Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
[Agate] Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
[Agate] Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
[Agate] Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
[Agate] Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
[Agate] Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
[Agate] Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
[Agate] Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
Rosemeyer, T. 2011 New from the Keweenaw: Part 4 - Recent Mineral Finds in Michigan's Copper Country. Rocks & Minerals 86:205-227
    • Ontonagon County
[Agate] MacFall, P.M. (1951) Gem Hunter's Guide (1st ed.). Science and Mathematics Publishing Company, 187 pages.
  • Minnesota
    • Cook County
      • Tofte
[Agate var. Lake Superior Agate] Brian Cowger
    • Lake County
      • Two Harbors
[Agate]
[Agate] Green, J. C. (1987). Plateau basalts of the Keweenawan North Shore Volcanic Group. Geol. Soc. Am. Centennial Field Guideβ€”North-Central Section, 59-62.
Ojakangas, R. W. and Matsch, C. L. (1982): Minnesota's Geology. U of Minnesota Press. 255p
[Agate] Roadside Geology of Minnesota (2009) Ojakangas, R.W.
  • Wisconsin
    • Ashland County
      • Ashland
[Agate var. Lake Superior Agate] Brian Cowger
    • Bayfield County
      • Bayfield
[Agate var. Lake Superior Agate] Brian Cowger
 
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