 | | Journal (article/letter/editorial) |
| [University of Connecticut] at 20:42 14 January 2015 South Dakota is perhaps best known for its pegmatites, which...Hills are responsible for the accessibility of South Dakota’s itbundant and diverse mineral locations...secondary phosphate minerals. Although some pegmatite mining for feldspar still continues (Jacobson 1994). the...which has operated for more than 120 years, most mining in the area peaked in the late 1800s and early...and fewer chances to obtain any. However, some mining, mineral exploration, and mineral collecting continues |
 | | Report (issue) |
| STATE OF SOUTH DAKOTA Nils Boe, Governor MINERALOGY OF THE BLACK HILLS by WILLARD LINCOLN ROBERTS...Associate in Mineralogy Museum of Geology, South Dakota School of Mines and Technology and GEORGE RAPP...Department of Geology and Geological Engineering, South Dakota School of Mines and Technology With the Editorial...Mineralogy South Dakota School of Mines and Technology BULLETIN NUMBER 18 of the South Dakota School of...of Mines and Technology Rapid City, South Dakota PUBLICATIONS STAFF F. L. Partlo J. T. Thomas President |
 | | Report (issue) |
| Formation HH5 Duchesne River Formation HH6 Major dike systems of the Uinta basin HH6 Pariette system HH6...Cowboy-Bonanza system HH8 Previous hypotheses on dike origin and sources of gilsonite HH9 Structure of...Dimensions HH12 Cross-sectional shape HH12 Morphology of dike walls HH15 Sandstone and siltstone of the lower...Uinta Formation HH17 Characteristics of dike interiors HH18 Dike and sill networks in three dimensions...alteration of dike walls HH25 Deposition of limonite HH25 Deposition of calcite HH25 Bleaching of dike walls |
