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Photography
Clay minerals
from
Arkansas, USA
USA
Arkansas
ⓘ
Greene County
Smith, Arthur E. Jr. (1988) Arkansas Mineral Locality Index.
Rocks & Minerals
, 63 (2) 104-125
doi:10.1080/00357529.1988.11761826
Hot Spring County
Perla
ⓘ
Malvern clay pits
www.rockhoundingar.com (n.d.)
http://www.rockhoundingar.com/fieldtrips/amber.html
Howard County
Briar
ⓘ
Certain Teed Gypsum Mine (Briar Gypsum Mine; Weyerhauser Mine; BPB Mine; James Hardy Mine; Dierks Mine)
Arkansas Geological Commission
ⓘ
Pulaski County
Arkansas Geological Commission
ⓘ
Saline County
Arkansas Geological Commission
Paron
ⓘ
Green's Crystal Mine (Clouds Mine)
Smith, Arthur E. Jr. (1997)
Collecting Arkansas Minerals
. L. R. Ream Publishing, Coeur d'Alene, ID.
and/or