Parent Layer: Pre1981_mines

Name: perlite

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Description: CGS IS-62 1981 Colorado Non-Metallic Mining Locations, Pre-1981 mines (All_pre_1981mines.shp) and other shapefiles (subsets of the shapefile referenced here) – This is an inventory conducted in 1981 of historic nonfuel nonmetallic mining operations (e.g. industrial minerals, sand, gravel, aggregates, etc.) within Colorado. The “All_pre_1981mines.shp” contains all the data points including areas not related to sand, gravel, and aggregate resources. Therefore, the additional layers were included as subsets of this dataset and include sand, gravel, borrow, sandstone, silica sand, volcanics, clay and shale, crushed rock, decomposed granite, dolomite, limestone, and perlite. The original publication is: Schwochow, S.D., Inventory of Nonmetallic Mining and Processing Operations in Colorado, Colorado Geological Survey Map Series 17, 39 pp, 17 Plates, http://coloradogeologicalsurvey.org/. The shapefiles included here were published in the digital version of the original publication published as: Keller, J.W., Phillips, R.C., and Morgan, K., 2002, Digital Inventory of Industrial Mineral Mines and Mine Permit Locations in Colorado, Colorado Geological Survey Information Series 62. Some of the field aliases were updated with more descriptive names. ANY DATA OR INFORMATION PROVIDED HERE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, WHETHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Data or information provided here shall be used and replied upon only at the user's sole risk, and the user agrees to indemnify and hold harmless the entities who provided the data and any other parties, its officials, officers and employees from any liability arising out of the user of the data/information provided. No warranty expressed or implied is made regarding the display or utility of the data, or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. The agencies who provided these data and the Colorado Geological Survey shall not be held liable for improper or incorrect use of the data described and/or contained herein.

Copyright Text: Colorado Geological Survey

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