Identification_Information: Citation: Citation_Information: Originator: Anna Wilson Originator: Melissa Crane Originator: Marc Woodard Publication_Date: 2000 Title: Mines, prospects, and mineral occurrences in the Grand Mesa, Uncompahgre, and Gunnison (GMUG) National Forest, Colorado Edition: Version 1.0 Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: Open File Issue_Identification: OF2000-XXXX Online_Linkage: http://greenwood.cr.usgs.gov/maps/ofrs.html Larger_Work_Citation: Citation_Information: Originator: Wilson, Anna Burack Originator: Spanski, Gregory T. Originator: Crane, Melissa J. Originator: Woodard, Marc D. Publication_Date: 200006 Title: Databases and spatial data model for mineralized areas, mines, and prospects in the GMUG National Forest, Colorado. Edition: Version 1.0 Geospatial_Data_Presentation_Form: map and text Series_Information: Series_Name: Open-File Report Issue_Identification: OF2000-XXXX Online_Linkage: http://greenwood.cr.usgs.gov/maps/ofrs.html Description: Abstract: In order to assess the mineral resource potential of the GMUG study area, Wilson, Crane and Woodard located mines and prospects. Much of the data was extracted from site records for mines, prospects, and occurrences contained in USGS and USBM data files. As many data records as possible were verified and many more sites were added based on information extracted from references and maps during the verification process. Locations of approximately 1,300 sites are believed to be accurate to within about 1/2 mi of their actual ground position. About 1,000 sites could not be verified from references but could be generally located using data (such as Township and Range or descriptive information) in the database records. These sites are believed to be accurate to within about 1 mi. Much of the other information pertaining to the site has also been updated and included in this new dataset. Purpose: Mine and prospect information was compiled to assist in outlining mineralized areas in the GMUG Forest. This information formed the base to use in the assessment of the mineral resource potential of the forest. Supplemental_Information: All of the mine and prospect information contained in the MRDS and MAS/MILS databases were used to compile this dataset. Data_Set_Part: Part_Type: Arc/Info export file Part_Name: mines.e00 Data_Set_Part: Part_Type: ArcView shape file Part_Name: mines.shp Data_Set_Part: Part_Type: MapInfo table file Part_Name: mines.tab Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2000 Currentness_Reference: The MRDS and MAS/MILS data, on which the mineralized areas are primarily based, were downloaded in 1997. MAS/MILS was actively updated until approximately 1995; few, if any, updates were made to any of the MRDS data in Colorado since the early 1980's. In the course of locating the sites described in MRDS and MAS/MILS, numerous corrections and additions were noted. No attempt has been made to update these data in MRDS and MAS/MILS. Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -109.00 East_Bounding_Coordinate: -106.00 North_Bounding_Coordinate: 39.50 South_Bounding_Coordinate: 37.75 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: mine Theme_Keyword: claim Theme_Keyword: prospect Theme_Keyword: occurrence Theme_Keyword: deposit Theme_Keyword: district Place: Place_Keyword_Thesaurus: None Place_Keyword: Colorado Place_Keyword: CO Place_Keyword: GMUG Place_Keyword: National Forest Place_Keyword: Grand Mesa Place_Keyword: Gunnison Place_Keyword: Uncompahgre Place_Keyword: Leadville Place_Keyword: Carbondale Place_Keyword: Grand Junction Place_Keyword: Moab Place_Keyword: Delta Place_Keyword: Nucla Place_Keyword: Montrose Place_Keyword: Paonia Place_Keyword: Saguache Place_Keyword: Durango Place_Keyword: Del Norte Place_Keyword: Silverton Place_Keyword: Cortez Place_Keyword: Dove Creek Access_Constraints: None Use_Constraints: Any hardcopies utilizing this data set shall clearly indicate this source. If the user has modified the data in any way, (s)he is obligated to describe the types of modifications performed on the hardcopy map. User specifically agrees not to misrepresent this data set, nor imply that changes were approved by the USGS. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Anna Wilson Contact_Organization: U.S. Geological Survey (USGS) Contact_Position: Geologist Contact_Address: Address_Type: mailing address Address: Box 25046, MS 905, Denver Federal Center City: Lakewood State_or_Province: Colorado Postal_Code: 80225 Country: U.S.A. Contact_Voice_Telephone: 303-236-1800 or 303-236-5593 Contact_Facsimile_Telephone: 303-236-3200 Contact_Electronic_Mail_Address: awilson@usgs.gov Contact_Instructions: General office phone is 303-236-1800 Native_Data_Set_Environment: MapInfo Professional 5.5 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: No accuracy determinations have been made. References are given, when known, so that the user may verify data. Completeness_Report: The data are not considered complete and coverage is inconsistent throughout the study area. Logical_Consistency_Report: Locations of mine workings versus the location of the mineral deposits is subject to interpretation and is inconsistent throughout the study area. In general, the location of the main working is given as the location, however, in some cases, especially where long haulage tunnels are involved, this may be as much as several miles from the mineral deposit. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Locations of mine workings are often shown on maps and are therefore more accurate than the locations of mineral deposits, which are subject to interpretation. The locations shown are not legal locations, have not been surveyed, and do not take into account private land ownership. Locations are the authors' interpretations of maps and descriptions in the literature. Accuracy cannot not calculated. Verified mine locations are probably within a 1/2 mi, and unverified locations within about 1 mi of either the working or actual deposit. The 177 sites that could not be located with this precision, are artificially placed at 106 degrees west, 39 degrees north. Nineteen additional placer sites could not be located. These are artificially placed at 106 degrees west, 39.25 degrees north. Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1927 Ellipsoid_Name: Clarke 1866 Semi-major_Axis: 6378206.4 Denominator_of_Flattening_Ratio: 294.98 Planar: Map_Projection: Map_Projection_Name: Lambert Conformal Conic Lambert_Conformal_Conic: Standard_Parallel: 33.00 Standard_Parallel: 45.00 Longitude_of_Central_Meridian: -108.00 Latitude_of_Projection_Origin: 0.0 False_Easting: 0.0 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 1 Ordinate_Resolution: 1 Planar_Distance_Units: meters Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: MRDS = identification number from USGS's Mineral Resources Data System. MILS = identification number from the former U.S. Bureau of Mines's Minerals Inventory and Lands System. NEW_SITE = Number assigned to new records LATITUDE = In degrees north, as determined by the authors LONGITUDE = In degrees west, as determined by the authors RECTYPE = S, site; A, area; D, district NAME = Common name for the site. SYNONYM = Synonyms for the site. Misspellings or claim names may also be listed here. Often includes comments on the reliability of the record. DISTRICT = Historic mining district to which the deposit was previously assigned. May or may not correspond to sites with RECTYPE D. COUNTY = One of the most reliable fields in the database because most mining records were kept by the counties. ELEVATION = Completely unreliable data, in feet. Unverified and unchecked from the original databases. TOWNSHIP, RANGE, SECTION, SECTION FRACTION, and POSITION = Extremely useful data. Relied on these to located many of the sites. However, much of the study area is not surveyed, and many of these entries are only estimates. LOCATION_COMMENT = Occasionally useful in locating a site. Rarely edited or added to this field. COMMODITY = Commodities associated with the site. Some of these are quite accurate, others totally inaccurate. Verified sites with references are generally much better than others. Some are actual commodities known to have been produced or prospected. Many are only guesses of what could be at the site based on geochemistry or similarity to nearby mines. List of abbreviations: AG, silver; AL2, aluminum, other than general or alunite; AL3, aluminum, alunite; AU, gold; BE, beryllium; BI, bismuth; CD, cadmium; CO, cobalt; COA, coal (only included where metallic minerals also occur); CR, chromium, CU, copper; F, fluorine, fluorite; FE, iron; FLD, feldspar; GAR, garnet; GEM, gemstone; GRF, graphite; GYP, gypsum, anhydrite; HE, helium; HG, mercury; K, potassium, MG, magnesium (brucite); MIC2, mica, scrap; Mica, mica; Mn, manganese; MO, molybdenum; NA, sodium; PB, lead; PER, perlite; PYR, pyrite; PT, platinum; PUM, pumice; QTZ, quartz; RA, radium; REE, rare earth elements; S, sulfur; SB, antimony; SDG, sand and gravel; SE, selenium; SN, tin; TA, tantalum; TE, tellurium; TH, thorium; TI, titanium; U, uranium; V, vanadium; W, tungsten. ORE_MATERIAL = Ore material or minerals. Some of these are actual commodities. Others are projections of what would be expected based on geology, geochemistry, and knowledge of the area. REFERENCES = Probably the most useful information in the database. Records with reliable references are generally more complete than the others. Often, a site is mentioned in passing, or is shown on a map with no other description. Complete citations are not given here. QUAD_24K = The 1:24,000 quadrangle on which the site plots. Should be accurate with the exception of unverified mines, and mines that are listed as being located in one quadrangle, but plot in another. QUAD_100K = The 1:100,000 quadrangle on which the site plots. Generally considered accurate. MODEL and MODEL_NUM = Where enough information exists to make and educated guess as to the deposit type as defined by Cox and Singer (1986), the model is included here. Even for those deposits that are classified, these may include more than one type and overlap between types is common. SYMBOL = verified = 1222 sites, location is within about 1/2 mi unverified = 952 sites, location is within about 1 mi. placer = location given in MRDS or MILS databases. For this report, no attempt was made to confirm any of the placer locations. bad placer = location given in MRDS or MILS is clearly problematic-perhaps the township information doesn't match the latitude and longitude, the location doesn't doesn't agree with the county, drainage, or any other information. For this report, no attempt was made to resolve these problems. wrong quad = the given location does not agree with the listed quadrangle. Either the latitude/longitude or quadrangle is wrong. for this report, no serious attempt was made to reconcile these problems, especially in the western part of the study area. district = general location of a mining district. Not to be considered as the center or centroid. placer district = general location of a placer mining district. Not to be considered the center or centroid. verified, not a mine = The old Alpine Railroad Tunnel is included in the MILS database but is not a mine. unlocated = mine could not be located within a mile. Artificially plotted at 106 degrees west, 39 degrees north. unlocated placer = placer could not be located within a mile. Artificially plotted at 106 degrees west, 29.25 degrees north. MINERAL_AREA = The newly defined mineralized area to which the site is assigned. Entity_and_Attribute_Detail_Citation: none Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S.G.S. Information Services (Open-File Report Sales) Contact_Address: Address_Type: mailing address Address: Box 25286, Building 810, Denver Federal Center City: Lakewood State_or_Province: CO Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303-202-4700 Contact_Facsimile_Telephone: 303-202-4188 Contact_Electronic_Mail_Address: infoservices@usgs.gov Hours_of_Service: 8:00 a.m. - 4:30 p.m. Central time zone Resource_Description: Open-File Report 2000-XXXX Distribution_Liability: The U.S. Geological Survey (USGS) provides the data "as is." The USGS makes no guarantee or warranty concerning the accuracy of information contained in the geographic data. The USGS further makes no warranties, either expressed or implied as to any other matter whatsoever, including, without limitation, the condition of the product, or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although these data have been processed successfully on computers at the USGS, no warranty, expressed or implied, is made by the USGS regarding the use of these data on any other system, nor does the fact of distribution constitute or imply any such warranty. In no event shall the USGS have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of arising out of use of or reliance on the geographic data or arising out of the delivery, installation, operation, or support by the USGS. Technical_Prerequisites: The user should have GIS software capable of reading Arc/Info export (.e00) or ArcView shape (.shp), or MapInfo table (.tab) files. In the event the user does not have such software, ESRI's ArcExplorer is provided as a rudimentary tool for viewing and querying the data. Metadata_Reference_Information: Metadata_Date: 20000425 Metadata_Review_Date: 20000630 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Anna Wilson Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing address Address: Box 25046, MS 905, Denver Federal Center City: Lakewood State_or_Province: CO Postal_Code: 80225-0046 Country: USA Contact_Voice_Telephone: 303-236-5593 Contact_Facsimile_Telephone: 303-236-3200 Contact_Electronic_Mail_Address: awilson@usgs.gov Contact_Instructions: Main phone is 303-236-1800 Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time Metadata_Access_Constraints: none Metadata_Use_Constraints: none