U.S. Geological Survey 2005 database http://ardf.wr.usgs.gov/ U.S. Geological Survey Unknown database Database of descriptions of mines, prospects, and mineral occurrences in Alaska. The Alaska Resource Data File (ARDF) is a subset of the National Mineral Resource Data System (MRDS) that has been specifically re-formatted and re-designed to better meet the needs of the local user community. 1988 Present publication date In work Continually 172 -130 72 52.0 None geology mines prospects mineral occurrences economic geology prospect mineral occurence mineral minerals mine occurrence occurrences gold Au silver Ag nickel Ni copper Cu lead Pb iron Fe uranium U zinc Zn tin Sn titanium Ti aluminum Al arsenic As cobalt Co chromium Cr molybdenum Mo antimony Sb tellurium Te platinum Pt mercury Hg bismuth Bi magnesium Mg manganese Mn Alaskan resource resources None Alaska None None U.S. Geological Survey Mineral Resources Program, Western Region - Alaska Section Frederic H. Wilson Geologist mailing and physical address

4200 University Drive

Anchorage AK 99508-4667 USA 907-786-7448 fwilson@usgs.gov http://tin.er.usgs.gov/ardf/ardf.png Distribution of ARDF records in Alaska (geographic image, no projection). 1280x1024 pixels, 1.1 megabytes. PNG FileMaker Pro 3.0 - 4.1 for Windows U.S. Geological Survey 2005 20050309 map Reston, Virginia U.S. Geological Survey http://tin.er.usgs.gov/mrds/ A site is a single geographic location, point or area, which may have had multiple site names. For historical perspective, all proper names are listed. ARDF is mainly concerned with the metallic commodities. Common industrial minerals such as sand and gravel, crushed stone, and limestone are not included, nor are energy minerals such as peat, coal, and oil and gas. Uranium and thorium, and rare earth elements are included, as well as high unit-value industrial minerals as barite, jade, graphite, and gypsum. The location of a site is given in decimal degrees. Some sites are areas rather than points and the geographic coordinates are the approximate center of the area. The precision of the latitude and longitude is reflected in the number of decimal places given. A narrative description of the location and the precision of the location is given in the text field 'Location description and accuracy'. The original ARDF records came from the national database MRDS. The ARDF records are being updated from information of government, industry, and literature sources. The updated ARDF records are fed back to the national MRDS database. Downloaded Filemaker Pro database file (ARDFcomp.fp5) on 05/04/2005 from ARDF website: http://ardf.wr.usgs.gov/digital.html. Imported ARDFcomp.fp5 into Filemaker Pro 6.0 and exported all records as a DBF file. Left out the following 5 fields because field length record exceeded 255 characters: Location, Geologic Description, Workings/exploration, Additional Comments, References. Imported DBF file into ArcView 3.2 and created shapefile: ardf05042005b.shp 05/04/2005 Point 0.01 0.01 Decimal degrees ardf.dbf Descriptions of mines, prospects, and mineral occurrences in Alaska. USGS site Site names. The name or names of the mine, prospect or mineral occurrence as it is referred to in the literature. If more than one name has been used, the primary name is the one in most common usage and is listed first. Textual values of no more than 314 characters. district District. Name of the general area in which the site is located. Textual values of no more than 33 characters. (no value) Information not available for this record. 14 records have no value for district. comm_main Main commodities. Dominant elements or commodities of real or potential economic value in the site. For some deposits, the list of commodities is only a list of elements identified in a sample or samples and does not necessarily indicate the commodities that ultimately will prove valuable. Textual values of no more than 86 characters. (no value) Information not available for this record. 42 records have no value for comm_main. quad_250 Quadrangle map, 1:250,000-scale. USGS topographic maps on which the site is located. The first two letters are a code for the 1:250,000-scale quadrangle. Textual values of no more than 8 characters. (no value) Information not available for this record. 1 records have no value for quad_250. AC Arctic AD Adak AF Afognak AK Atka AL Atlin AM Amukta AN Anchorage AR Ambler River AT Attu BA Barter Island BB Bristol Bay BC Bradfield Canal BD Big Delta BG Bering Glacier BH Bethel BI Baird Inlet BL Black BM Baird Mountains BN Bendeleben BP Beechey Point BR Black River BS Blying Sound BT Bettles BV Beaver BW Barrow CA Candle CB Cold Bay CG Chignik CH Chandalar CI Circle CL Chandler Lake CM Cape Mendenhall CO Coleen CR Craig CS Christian CV Cordova CY Charley River DE Dixon Entrance DI Dillingham DL De Long Mountains DP Demarcation Point EA Eagle FB Fairbanks FI Flaxman Island FP False Pass FY Fort Yukon GI Gareloi Island GO Goodnews GU Gulkana HC Holy Cross HE Healy HG Hagemeister Island HP Hooper Bay HR Harrison Bay HU Hughes HW Howard Pass IB Icy Bay ID Iditarod IK Ikpikpuk River IL Iliamna JU Juneau KB Kuskokwim Bay KC Ketchikan KD Kodiak KG Kaguyak KH Kantishna River KK Kiska KL Killik River KN Kenai KR Karluk KT Kateel River KW Kwiguk KZ Kotzebue LC Lake Clark LG Livengood LH Lime Hills LR Lookout Ridge MA Marshall MC McCarthy MD Medfra MF Mount Fairweather MG McGrath MH Mount Hayes MI Middleton Island MK Mount Katmai ML Mount Michelson MM Mount McKinley MR Meade River MS Mount St. Elias MU Misheguk Mountain MZ Melozitna NB Nabesna NG Nushagak Bay NI Nunivak Island NK Naknek NL Nulato NM Nome NR Norton Bay NT Noatak OF Offshore OP Ophir PA Port Alexander PE Petersburg PH Point Hope PI Pribilof Islands PL Point Lay PM Port Moller PR Prince Rupert PS Philip Smith Mts. RB Ruby RI Rat Islands RM Russian Mission SA Samalga Island SB Stepovak Bay SC Saint Michael SD Sumdum SE Selawik SF Shishmaref SG Sagavanirktok SH Shugnak SI Sitka SK Skagway SL Saint Lawrence SM Sleetmute SN Simeonof Island SO Solomon SP Survey Pass SR Seward ST Saint Matthew SU Seguam SV Seldovia SW Sutwik Island TA Taylor Mountains TB Table Mountain TC Tanacross TE Teller TI Trinity Island TK Talkeetna Mountains TL Talkeetna TN Tanana TR Taku River TS Teshekpuk TY Tyonek UG Ugashik UK Umnak UL Unalakleet UM Unimak UN Unalaska UR Utukok River UT Umiat VA Valdez WA Wainwright WI Wiseman YA Yakutat quad_63360 Quadrangle map, 1:63,360-scale. USGS topographic maps on which the site is located. Maps are identified in two parts, a two-letter code for the 1:250,000-scale quadrangle followed by the letter, hyphen, and number(s) used to designate the 1:63,360-scale map sheet. following USGS. Textual values of no more than 13 characters. (no value) Information not available for this record. 77 records have no value for quad_63360. latitude Latitude. Location of the site in decimal degrees. Some sites cover large areas and the location given is a point at the approximate center of the area. Real numbers stored in double precision. 51.6 69.63 longitude Geographic longitude. Location of the site in decimal degrees. Some sites cover large areas and the location given is a point at the approximate center of the area. Real numbers stored in double precision. -178.8 -130.016 location Location and accuracy. A narrative description of the location of the site and its areal extent, which should also include information on the reliability of the location. Textual values of no more than 1418 characters. comm_other Other commodities. Other commodities present in minor amounts as determined by analysis or mineralogical determination. For some deposits, the list of commodities is only a list of elements identified in a sample or samples and does not necessarily indicate the commodities. Textual values of no more than 48 characters. (no value) Information not available for this record. 3842 records have no value for comm_other. ore Ore minerals. A list of the minerals in the site, usually metallic, which are of potential economic value. Textual values of no more than 368 characters. (no value) Information not available for this record. 726 records have no value for ore. gangue Gangue minerals. A list of the non-economic minerals in the site that cannot be avoided in mining but are separated during concentration. Textual values of no more than 220 characters. (no value) Information not available for this record. 3530 records have no value for gangue. site_type Site type. The sites described in this database are separated into mines, prospects, and mineral occurrences. In general, mines have past production, prospects have had some development work, and mineral occurrences include unexplored or incompletely explored oc. Textual values of no more than 17 characters. (no value) Information not available for this record. 5 records have no value for site_type. status Site status. Inactive or active. An active designation indicates recent work at the time of record entry or update. The determination of this status is not to be construed to reflect the legal status of the site, but rather indicates the appearance of exploration. Textual values of no more than 26 characters. (no value) Information not available for this record. 66 records have no value for status. production Indication of production. Restricted to "yes", "no", or undetermined ("undet."). "Yes" may be qualified as small, medium, or large. Textual values of no more than 16 characters. (no value) Information not available for this record. 87 records have no value for production. dep_model Mineral deposit model. One or more named descriptive or genetic mineral deposit models listed in Cox and Singer (1986), Bliss (1992), or other indicated references. The models shown are those that appeared most appropriate to the compilers of the site record. Textual values of no more than 617 characters. (no value) Information not available for this record. 812 records have no value for dep_model. geol_desc Geologic description. Local geology and character of the deposit including, where possible, the host rock, structure of the host and mineralized system, mineralogical relations, and the shape and form of the deposit. Textual values of no more than 8693 characters. (no value) Information not available for this record. 3 records have no value for geol_desc. work_expl Workings or exploration. A description of the mining or exploration efforts to evaluate a mine or prospect. For mineral occurrences, this field would normally include the work done or the evidence to suggest mineral potential. Textual values of no more than 6459 characters. (no value) Information not available for this record. 679 records have no value for work_expl. comments Additional comments. Pertinent information not appropriate for other fields in the description. Textual values of no more than 1660 characters. (no value) Information not available for this record. 4319 records have no value for comments. reference References. List of known references that discuss the occurrence or are applicable to its description. Textual values of no more than 1372 characters. (no value) Information not available for this record. 14 records have no value for reference. ARDF_num ARDF Number. Unique label assigned to each site. First two letters comprise the quadrangle code, followed by a three digit number. Textual values of no more than 11 characters. rept_names Reporters. Names of people responsible for completion of the record. Textual values of no more than 134 characters. rept_date Last report date. Date of record entry or last update. Textual values of no more than 16 characters. (no value) Information not available for this record. 3 records have no value for rept_date. MRDS_num MRDS Number. Unique identifier for the record as it appeared in the Mineral Resources Data System (MRDS). Textual values of no more than 61 characters. (no value) Information not available for this record. 3183 records have no value for MRDS_num. age Age of mineralization. The age of mineralization and an explanation of the evidence for the age, if warranted. Textual values of no more than 1323 characters. (no value) Information not available for this record. 1546 records have no value for age. rept_aff Reporter affiliation. Institutional affiliation of the reporter providing the information about the site. Textual values of no more than 53 characters. (no value) Information not available for this record. 5197 records have no value for rept_aff. model_code Mineral deposit model number. Unique identifier for the mineral deposit model, from Cox and Singer (1986) or Bliss (1992). Textual values of no more than 68 characters. (no value) Information not available for this record. 2071 records have no value for model_code. alteration Alteration of deposit. Description of alteration of the deposit. Textual values of no more than 1594 characters. (no value) Information not available for this record. 4254 records have no value for alteration. prod_notes Production notes. More extensive (and variable) information about production at the site, if known. Textual values of no more than 3488 characters. (no value) Information not available for this record. 5435 records have no value for prod_notes. reserves Reserve estimates. Reserve figures and references to their source. This field may include estimates based on a variety of assumptions at various times; this can result in conflicting assessments of reserves. This field may also include resource estimates based on probab. Textual values of no more than 1661 characters. (no value) Information not available for this record. 5990 records have no value for reserves. prime_ref Primary reference. The best reference describing the occurrence, although it may be far from a complete description. Textual values of no more than 193 characters. (no value) Information not available for this record. 42 records have no value for prime_ref. U.S. Geological Survey Mineral Resources Program, Western Region - Alaska Section Frederic H. Wilson Geologist mailing and physical address

4200 University Drive

Anchorage AK 99508-4667 USA 907-786-7448 fwilson@usgs.gov The distributor assumes no liability. Comma-separated values ARDF mineral resource records not compressed http://ardf.wr.usgs.gov/ardf_data/ardfcomp.csv Shapefile 1.0 ARDF mineral resource records truncated to fit in the 255-character limit of DBF unzip 2 megabytes http://tin.er.usgs.gov/ardf/ardf.zip none 20050617 U.S. Geological Survey Mineral Resources Program, Western Region - Alaska Section Nora Shew Geologist mailing and physical address

4200 University Drive

Anchorage AK 99508-4667 USA 907-786-7445 nshew@usgs.gov Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998