Parent Layer: 1:48,000-scale

Name: 48k_Points

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Description: Version 10.0 of these data are part of a larger U.S. Geological Survey (USGS) project to develop an updated geospatial database of mines, mineral deposits, and mineral regions in the United States. Mine and prospect-related symbols, such as those used to represent prospect pits, mines, adits, dumps, tailings, etc., hereafter referred to as “mine” symbols or features, have been digitized from the 7.5-minute (1:24,000, 1:25,000-scale; and 1:10,000, 1:20,000 and 1:30,000-scale in Puerto Rico only) and the 15-minute (1:48,000 and 1:62,500-scale; 1:63,360-scale in Alaska only) archive of the USGS Historical Topographic Map Collection (HTMC), or acquired from available databases (California and Nevada, 1:24,000-scale only). Compilation of these features is the first phase in capturing accurate locations and general information about features related to mineral resource exploration and extraction across the U.S. The compilation of 725,690 point and polygon mine symbols from approximately 106,350 maps across 50 states, the Commonwealth of Puerto Rico (PR) and the District of Columbia (DC) has been completed: Alabama (AL), Alaska (AK), Arizona (AZ), Arkansas (AR), California (CA), Colorado (CO), Connecticut (CT), Delaware (DE), Florida (FL), Georgia (GA), Hawaii (HI), Idaho (ID), Illinois (IL), Indiana (IN), Iowa (IA), Kansas (KS), Kentucky (KY), Louisiana (LA), Maine (ME), Maryland (MD), Massachusetts (MA), Michigan (MI), Minnesota (MN), Mississippi (MS), Missouri (MO), Montana (MT), Nebraska (NE), Nevada (NV), New Hampshire (NH), New Jersey (NJ), New Mexico (NM), New York (NY), North Carolina (NC), North Dakota (ND), Ohio (OH), Oklahoma (OK), Oregon (OR), Pennsylvania (PA), Rhode Island (RI), South Carolina (SC), South Dakota (SD), Tennessee (TN), Texas (TX), Utah (UT), Vermont (VT), Virginia (VA), Washington (WA), West Virginia (WV), Wisconsin (WI), and Wyoming (WY). The process renders not only a more complete picture of exploration and mining in the U.S., but an approximate timeline of when these activities occurred. These data may be used for land use planning, assessing abandoned mine lands and mine-related environmental impacts, assessing the value of mineral resources from Federal, State and private lands, and mapping mineralized areas and systems for input into the land management process. These data are presented as three groups of layers based on the scale of the source maps. No reconciliation between the data groups was done.

Copyright Text: Datasets were developed by the U.S. Geological Survey Geology, Geophysics, and Geochemistry Science Center (GGGSC). Compilation work was completed by USGS National Association of Geoscience Teachers (NAGT) interns: Emma L. Boardman-Larson, Grayce M. Gibbs, William R. Gnesda, Montana E. Hauke, Jacob D. Melendez, Amanda L. Ringer, and Alex J. Schwarz; USGS student contractors: Margaret B. Hammond, Germán Schmeda, Patrick C. Scott, Tyler Reyes, Morgan Mullins, Thomas Carroll, Margaret Brantley, and Logan Barrett; and by USGS personnel Virgil S. Alfred, Damon Bickerstaff, E.G. Boyce, Madelyn E. Eysel, Stuart A. Giles, Autumn L. Helfrich, Alan A. Hurlbert, Cheryl L. Novakovich, Sophia J. Pinter, and Andrew F. Smith.

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Extent:

XMin: -1.36858859971E7
YMin: 3760357.8015
XMax: -7464354.1313000005
YMax: 6184124.512599997
Spatial Reference: 102100  (3857)

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• Value: Adit
  Label: Adit
  Description:
  Symbol:
  
• Value: Mine Shaft
  Label: Mine Shaft
  Description:
  Symbol:
  
• Value: Coal Mine
  Label: Mine or Quarry
  Description:
  Symbol:
  
• Value: Hydraulic Mine
  Label: Mine or Quarry
  Description:
  Symbol:
  
• Value: Open Pit Mine
  Label: Mine or Quarry
  Description:
  Symbol:
  
• Value: Open Pit Mine or Quarry
  Label: Mine or Quarry
  Description:
  Symbol:
  
• Value: Placer Mine
  Label: Mine or Quarry
  Description:
  Symbol:
  
• Value: Quarry
  Label: Mine or Quarry
  Description:
  Symbol:
  
• Value: Quarry - Gypsum
  Label: Mine or Quarry
  Description:
  Symbol:
  
• Value: Quarry - Limestone
  Label: Mine or Quarry
  Description:
  Symbol:
  
• Value: Quarry - Pumice
  Label: Mine or Quarry
  Description:
  Symbol:
  
• Value: Quarry - Rock
  Label: Mine or Quarry
  Description:
  Symbol:
  
• Value: Silica Mine
  Label: Mine or Quarry
  Description:
  Symbol:
  
• Value: Strip Mine
  Label: Mine or Quarry
  Description:
  Symbol:
  
• Value: Uranium Mine
  Label: Mine or Quarry
  Description:
  Symbol:
  
• Value: Prospect Pit
  Label: Prospect Pit
  Description:
  Symbol:
  
• Value: Chert Pit
  Label: Pit - various
  Description:
  Symbol:
  
• Value: Marl Pit
  Label: Pit - various
  Description:
  Symbol:
  
• Value: Bentonite Pit
  Label: Pit - various
  Description:
  Symbol:
  
• Value: Borrow Pit
  Label: Pit - various
  Description:
  Symbol:
  
• Value: Caliche Pit
  Label: Pit - various
  Description:
  Symbol:
  
• Value: Cinder Pit
  Label: Pit - various
  Description:
  Symbol:
  
• Value: Clay Pit
  Label: Pit - various
  Description:
  Symbol:
  
• Value: Gravel Pit
  Label: Pit - various
  Description:
  Symbol:
  
• Value: Gravel/Borrow Pit - Undifferentiated
  Label: Pit - various
  Description:
  Symbol:
  
• Value: Iron Pit
  Label: Pit - various
  Description:
  Symbol:
  
• Value: Lignite Pit
  Label: Pit - various
  Description:
  Symbol:
  
• Value: Pumice Pit
  Label: Pit - various
  Description:
  Symbol:
  
• Value: Sand Pit
  Label: Pit - various
  Description:
  Symbol:
  
• Value: Sand and Gravel Pit
  Label: Pit - various
  Description:
  Symbol:
  
• Value: Scoria Pit
  Label: Pit - various
  Description:
  Symbol:
  
• Value: Shale Pit
  Label: Pit - various
  Description:
  Symbol:
  
• Value: Shell Pit
  Label: Pit - various
  Description:
  Symbol:
  
• Value: Tailings - Pond
  Label: Other features
  Description:
  Symbol:
  
• Value: Tipple
  Label: Other features
  Description:
  Symbol:
  
• Value: Mine
  Label: Other features
  Description:
  Symbol:
  
• Value: Air Shaft
  Label: Other features
  Description:
  Symbol:
  
• Value: Diggings
  Label: Other features
  Description:
  Symbol:
  
• Value: Glory Hole
  Label: Other features
  Description:
  Symbol:
  
• Value: Mill Site
  Label: Other features
  Description:
  Symbol:
  
• Value: Mine Dump
  Label: Other features
  Description:
  Symbol:
  
• Value: Ore Stockpile/Storage
  Label: Other features
  Description:
  Symbol:
  
• Value: Slag Pile
  Label: Other features
  Description:
  Symbol:
  
• Value: Tailings - Dredge
  Label: Other features
  Description:
  Symbol:
  
• Value: Tailings - Placer
  Label: Other features
  Description:
  Symbol:
  
• Value: Tailings - Undifferentiated
  Label: Other features
  Description:
  Symbol:
  
• Value: Trench
  Label: Other features
  Description:
  Symbol:
  
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