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Quartz from Keweenaw County, Michigan, USA

02561200014946311463484.jpg
Agate

Keweenaw Point, Grant Township, Keweenaw County, Michigan, USA
09581060014947328822123.jpg
Agate

Lakeshore traps, Eagle Harbor, Keweenaw County, Michigan, USA
02186620017058163855519.jpg
Agate

Isle Royale National Park, Keweenaw County, Michigan, USA
03297350015959428387164.jpg
Agate

Lakeshore traps, Eagle Harbor, Keweenaw County, Michigan, USA
06344450015860323907188.jpg
Agate

Keweenaw Point, Grant Township, Keweenaw County, Michigan, USA
08539350014947116593211.jpg
Agate

Lakeshore traps, Eagle Harbor, Keweenaw County, Michigan, USA
09641820017062487076690.jpg
Agate

Isle Royale National Park, Keweenaw County, Michigan, USA
03297350015959428387164.jpg
Agate

Lakeshore traps, Eagle Harbor, Keweenaw County, Michigan, USA
02561200014946311463484.jpg
Agate

Keweenaw Point, Grant Township, Keweenaw County, Michigan, USA
09581060014947328822123.jpg
Agate

Lakeshore traps, Eagle Harbor, Keweenaw County, Michigan, USA
01677960017062487098040.jpg
Agate

Isle Royale National Park, Keweenaw County, Michigan, USA
03512250016074249815822.jpg
Agate

Lakeshore traps, Eagle Harbor, Keweenaw County, Michigan, USA
USA
 
  • Michigan
[Agate var. Lake Superior Agate] Earth Science v.19, no. 2, p.98. (1966)
      • Allouez Township
        • Ahmeek
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Rosemeyer, T. (2022). News from the Keweenaw: Part 5β€”Recent Mineral Finds in Michigan’s Copper Country: Twenty-ninth in a series of articles on the mines and minerals of Michigan’s Copper Country. Rocks & Minerals, 97(4), 354-363.
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.
USGS PP144
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
USGS PP144
        • Allouez
Morris Jr., T. (1983) Michigan Mineralogy: A Locality Index. Rocks & Minerals: 58(3): 111.
Rosemeyer, T. (2007) The Kearsarge: Copper-bearing Amygdaloidal Lode. Houghton and Keweenaw Counties, Michigan. Rocks & Minerals: 82(4): 276-297.
[Agate] Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
Morris Jr., T. (1983) Michigan Mineralogy: A Locality Index. Rocks & Minerals: 58(3): 111. & 121
Palache, Charles, Berman, Harry, Frondel, Clifford (1951) The System of Mineralogy (7th ed.) Vol. 2 - Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Ect. John Wiley and Sons, New York.
Henwood, W.J. (1871) Observations on Metalliferous Deposits: On the Native Copper of Lake Superior. Transactions of the Royal Geological Society of Cornwall 8(1): 385-489.
Rocks & Minerals 84:298-323
[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
        • Mohawk
Rocks & Min.: 21:664
58:111.
Yalmer F Primeau
Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
Henwood, W.J. (1871) Observations on Metalliferous Deposits: On the Native Copper of Lake Superior. Transactions of the Royal Geological Society of Cornwall 8(1): 385-489.
        • Ojibway
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
Rosemeyer, T. (2011) New from the Keweenaw: Part 4 - Recent Mineral Finds in Michigan's Copper Country. Rocks & Minerals: 86(3): 205-227
Rocks & Min.: 58:111
73:3 p189-190
        • Seneca
Morris Jr., T. (1983) Michigan Mineralogy: A Locality Index. Rocks & Minerals: 58(3): 111.
          • Seneca Mine
Tom Rosemeyer, pers. comm.
Morris Jr., T. (1983) Michigan Mineralogy: A Locality Index. Rocks & Minerals: 58(3): 111.
(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 var. Lake Superior Agate] Brian Cowger
[Agate] Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
Visual identification by Jim Gawura
      • 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.
[Agate] Paul Brandes field observation.
Rosemeyer, T. (2022). News from the Keweenaw: Part 5β€”Recent Mineral Finds in Michigan’s Copper Country: Twenty-ninth in a series of articles on the mines and minerals of Michigan’s Copper Country. Rocks & Minerals, 97(4), 354-363.
        • Copper Falls
USGS PP144
            • Owl Creek Fissure Mine
Frank Karasti
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.
Yalmer Primeau collection
[Agate] 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.
Paul T. Brandes
[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
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
        • 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.
Tom Rosemeyer collection
[Agate] Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
Rosemeyer, T. (2009) Copper-bearing Fissure Veins, Keweenaw County, Michigan, Lake Superior Native Copper District. Rocks & Minerals: 84(4): 298-323.
Rocks & Min.: 21:664
58:111.
[var. Amethyst] 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.
          • Manganese Mine
Allan Blaske collection
          • Mosquito Mining District
Rosemeyer, T. (2009) Copper-bearing Fissure Veins, Keweenaw County, Michigan, Lake Superior Native Copper District. Rocks & Minerals: 84(4): 298-323.
R&M 78:3 p180
Rosemeyer, T. (2009) Copper-bearing Fissure Veins, Keweenaw County, Michigan, Lake Superior Native Copper District. Rocks & Minerals: 84(4): 298-323.
Rosemeyer, Tom (2003) The Occurrence of Porcelaneous Datolite in Michigan's Lake Superior Copper District. Rocks & Minerals, 78 (3) 170-188 doi:10.1080/00357529.2003.9926717
[Agate] Yalmer Primeau collection
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.
        • Lac La Belle
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
          • Mount Bohemia
Institute on Lake Superior Geology Proceedings, 40th Annual Meeting, Houghton, MI, v. 40, part 4,
        • Mandan
Yalmer F Primeau
[var. Milky Quartz] 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.
[var. Amethyst] 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.
Rosemeyer, T. (2009) Copper-bearing Fissure Veins, Keweenaw County, Michigan, Lake Superior Native Copper District (Part 1). Rocks & Minerals, 84:4, 298-306.
Rosemeyer, T. (2009) Copper-bearing Fissure Veins, Keweenaw County, Michigan, Lake Superior Native Copper District (Part 2). Rocks & Minerals, 84:4, 307-319.
Rosemeyer, T. (2009) Copper-bearing Fissure Veins, Keweenaw County, Michigan, Lake Superior Native Copper District (Part 3). Rocks & Minerals, 84:4, 320-323.
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
      • Houghton Township
        • Central
Rosemeyer, T. (2009) Copper-bearing Fissure Veins, Keweenaw County, Michigan, Lake Superior Native Copper District. Rocks & Minerals: 84(4): 298-323.
Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
Rosemeyer, T. (2009) Copper-bearing Fissure Veins, Keweenaw County, Michigan, Lake Superior Native Copper District. Rocks & Minerals: 84(4): 298-323.
        • Eagle River
[Agate] Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
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.
        • Phoenix
Yalmer F Primeau
Henwood, W.J. (1871) Observations on Metalliferous Deposits: On the Native Copper of Lake Superior. Transactions of the Royal Geological Society of Cornwall 8(1): 385-489.
Tschernich, Rudy W. (1992) Zeolites of the World. Geoscience Press, Inc., Phoenix, Arizona. 567pp.
Morris Jr., T. (1983) Michigan Mineralogy: A Locality Index. Rocks & Minerals: 58(3): 111.
Rosemeyer, T. (2009) Copper-bearing Fissure Veins, Keweenaw County, Michigan, Lake Superior Native Copper District. Rocks & Minerals: 84(4): 298-323.
Personal observation- Jim Daly
self collected on 8-2004
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
      • 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
 
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