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Agate from Iowa, USA

00243920014961103617743.jpg
Agate

Dubuque County, Iowa, USA
05129400017056397802251.jpg
Agate

Dubuque County, Iowa, USA
06972430014977585409142.jpg
Agate

Dubuque County, Iowa, USA
04627610014953748716347.jpg
Agate

Dubuque County, Iowa, USA
08592520014950411993914.jpg
Agate

Dubuque County, Iowa, USA
06972430014977585409142.jpg
Agate

Dubuque County, Iowa, USA
07147980014977593774692.jpg
Agate

Dubuque County, Iowa, USA
08592520014950411993914.jpg
Agate

Dubuque County, Iowa, USA
06972430014977585409142.jpg
Agate

Dubuque County, Iowa, USA
USA
 
  • Iowa
Horick, P.J. (1974) The Minerals of Iowa. Iowa Geological Survey Educational Series 2, 88 pages.
    • Benton County
Gems&Min. 374: 25-27.
Smith, Arthur E., Prior, Harold L. (2002) Iowa Mineral Locality Index. Rocks & Minerals, 77 (6) 404-413 doi:10.1080/00357529.2002.9924893
Paul J. Horick (1974) The Minerals of Iowa : Iowa Geological Survey Educational Series 2
Paul J.Horick (1974) The Minerals of iowa
Iowa Geological Survey Educational Series 2
    • Butler County
Smith, Arthur E., Prior, Harold L. (2002) Iowa Mineral Locality Index. Rocks & Minerals, 77 (6) 404-413 doi:10.1080/00357529.2002.9924893
Ransom, Jay Ellis (1974) Gems and Minerals of America - A Guide to Rock Collecting. Harper & Row.
Horick, P.J. (1974) The Minerals of Iowa. Iowa Geological Survey Educational Series 2, 88 pages.
[var. Lake Superior Agate] Ransom, Jay Ellis (1974) Gems and Minerals of America - A Guide to Rock Collecting. Harper & Row.
    • Dubuque County
      • Dubuque
MacFall, P.M. (1951) Gem Hunter's Guide (1st ed.). Science and Mathematics Publishing Company, 187 pages.
Smith, Arthur E., Prior, Harold L. (2002) Iowa Mineral Locality Index. Rocks & Minerals, 77 (6) 404-413 doi:10.1080/00357529.2002.9924893
    • Floyd County
Smith, Arthur E., Prior, Harold L. (2002) Iowa Mineral Locality Index. Rocks & Minerals, 77 (6) 404-413 doi:10.1080/00357529.2002.9924893
    • Hamilton County
MacFall, P.M. (1951) Gem Hunter's Guide (1st ed.). Science and Mathematics Publishing Company, 187 pages.
    • Henry County
Smith, Arthur E., Prior, Harold L. (2002) Iowa Mineral Locality Index. Rocks & Minerals, 77 (6) 404-413 doi:10.1080/00357529.2002.9924893
MacFall, P.M. (1951) Gem Hunter's Guide (1st ed.). Science and Mathematics Publishing Company, 187 pages.
    • Jackson County
[var. Lake Superior Agate]
    • Keokuk County
      • Harper
Smith, Arthur E., Prior, Harold L. (2002) Iowa Mineral Locality Index. Rocks & Minerals, 77 (6) 404-413 doi:10.1080/00357529.2002.9924893
      • Ollie
Smith, Arthur E., Prior, Harold L. (2002) Iowa Mineral Locality Index. Rocks & Minerals, 77 (6) 404-413 doi:10.1080/00357529.2002.9924893
    • Linn County
Smith, Arthur E., Prior, Harold L. (2002) Iowa Mineral Locality Index. Rocks & Minerals, 77 (6) 404-413 doi:10.1080/00357529.2002.9924893
    • Marshall County
Rocks&Min. 20:480.
    • Montgomery County
Ransom, Jay Ellis (1974) Gems and Minerals of America - A Guide to Rock Collecting. Harper & Row.
    • Muscatine County
      • Muscatine
[var. Lake Superior Agate] Smith, Arthur E., Prior, Harold L. (2002) Iowa Mineral Locality Index. Rocks & Minerals, 77 (6) 404-413 doi:10.1080/00357529.2002.9924893
[var. Lake Superior Agate] Smith, Arthur E., Prior, Harold L. (2002) Iowa Mineral Locality Index. Rocks & Minerals, 77 (6) 404-413 doi:10.1080/00357529.2002.9924893
    • Palo Alto County
Ransom, Jay Ellis (1974) Gems and Minerals of America - A Guide to Rock Collecting. Harper & Row.
 
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