Mineral Exploration Document Areas - Minarchive

Spatial (GIS) footprints that connect to more than 10,000 scanned mineral exploration documents indexed by the Minnesota DNR's Lands and Minerals Division between 1999-2001. The inventory was called Minarchive and resulted in a searchable website at: http://minarchive.dnr.state.mn.us/. The GIS footprints from this project were reviewed and attributes modified in order to make certain that each footprint had a relationship to one or more online exploration documents. These footprints are being made available to assist users in their search for mineral exploration documents in GIS software and/or online web map applications. A PDF report organized by Minarchive mineral exploration area (Spatial_ID) was developed to give general information on each document as well as provide online links to download PDFs and georeferenced maps.<br/>http://files.dnr.state.mn.us/lands_minerals/minarchive_collections/minarchive_report_links_october_2016.pdf<br/><br/>Also included is a related GIS dataset featuring the footprints of selected Minarchive exploration documents georeferenced by the DNR between 2014-2016. This dataset has links to download the selected georeferenced maps. There are many more maps in Minarchive that can be geoferenced. <br/><br/>Lastly included is a DNR pilot project that captured GIS data from georeferenced maps in a specific area of Northern Minnesota called the Cook Area. Data collected includes grids, bedrock outrcrops, and various point features such as drill holes or surface samples.<br/><br/>GIS Datasets Provided (Shapefiles, Table, and File Geodatabase)<br/>1.mineral_exploration_areas.shp - Footprints of Minarchive mineral exploration areas.<br/>2.georeferenced_map_footprints.shp - Footprints of selected georeferenced Minarchive maps.<br/>3.grids.shp - Cook area pilot project geophysical and geochemical grids<br/>4.outcrops.shp - Cook area pilot project bedrock outcrops<br/>5.points.shp - Cook area pilot project point features<br/>6.minarchive_documents_table.dbf - Table of each indexed Minarchive document record with related footprint.

Additional Info

Field Value
Last Updated May 20, 2017, 10:02
Created May 12, 2017, 10:02
dsAccessConst None
dsCurrentRef Time period of content date indicates the date which the user can be confident of accuracy and completeness of the dataset
dsMetadataUrl ftp://ftp.gisdata.mn.gov/pub/gdrs/data/pub/us_mn_state_dnr/geos_mineral_exp_docs_minarchive/metadata/metadata.html
dsModifiedDate 2017-05-20 00:00:57
dsOriginator Minnesota Department of Natural Resources (DNR)
dsPurpose The GIS footprints representing mineral exploration areas provide a searchable link to the Minarchive inventory of online mineral exploration documents. <br/><br/>The DNR saw a value in georeferencing maps from the Minarchive document collection. Between 2014 and 2016 the DNR georeferenced greater than 800 minarchive maps and made them available online. This represents roughly 30% of the maps from Minarchive. <br/><br/>The DNR completed a pilot project to digitize geophysical and geochemical grid lines, bedrock outcrops, and mineral exploration point features off selected georeferenced maps. The Cook Area in Northern Minnesota was selected to focus the project's efforts. The features and associated table completed provide a database repository for capturing similar vector GIS data off other Minarchive georeference maps. <br/><br/>About the Minarchive Document Inventory (1999-2001):<br/>These public documents provide a rich source of information for future mineral exploration, environmental research, and historical minerals research. For many areas of the state, they contain our only view of bedrock terrain, deeply buried as it is by glacial material.<br/><br/>An extremely wide range of information is covered by documents in the index, as a glance at the Attribute Search page will show, from large regional surveys to data on individual drillholes. Documents may be maps or other drawings; may include text or tabular information on geophysics, geochemistry or other characteristics. Each document has been individually catalogued and, where possible, placed in context of other related documents from the same exploration program. For each document, cataloguing staff have noted when the work was done, by whom, where, and the type and method of work. Cataloguing guidelines are available at: http://minarchive.dnr.state.mn.us/guidelines.pdf<br/><br/>Some of the documents in this index have been generously donated by mineral exploration companies; others were submitted in fulfillment of mineral lease requirements. And some documents are present because of disclosure requirements related to re-examination and sampling of drill core housed at the Department of Natural Resources Drill Core Library in Hibbing, Minnesota. The Library contains more than three million feet of mineral samples available for analysis.<br/><br/>Efforts to improve access to records of Minnesota's historical mineral exploration have been partially funded by a grant from the Legislative Commission on Minnesota Resources - Future Resources Fund. Thanks also to the Institute for Minnesota Archaeology's From Site to Story project and website, and the Minnesota Historical Society's Visual Resources Database for inspiration.

Dataset extent

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