 | | Book (volume) | | certain other areas, as around the Great Lakes region. Numerous small discoveries of gem materials took...Cantlin, Ellis, [D; Jeannette B. Carillo, Gem Center USA, EI Paso, TX; Gary Christopher, The Prospectors Cache... Map of kimberlite fields in Wyoming-Colorado region........cccsscsseeeseeeeseens 130 Figure 28. ... Map of amethyst mine locations, ‘Thunder Bay region of Ontario................. 310 Figure 64. View...Amethyst Mine......... 312 Figure 66. Collecting agate nodules along shore of Lake Superior... cece 316 | | | Book (volume) | | certain other areas, as around the Great Lakes region. Numerous s1nall discoveries of gem materials took...Cantlin, Ellis, ID; Jeannette B. Carillo, Gen1 Center USA, El Paso, TX; Gary Christopher, The Prospectors Cache... Map of kimberlite fields in Wyoming-Colorado region.................................. 13 0 Figure...63. Map of amethyst nune locations, Thunder Bay region of Ontario................. 310 Figure 64. View...Amethyst Mine......... 312 Figure 66. Collecting agate nodules along shore of Lake Superior........... |
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Knobs region, Kentucky Agate District, Kentucky, USA