Metadata for Montana Mining Districts Metadata for Montana Mining Districts

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Identification Information:

Citation:

Originator: Montana State Library
Publication date: 01/21/1994
Title: Montana Mining Districts
Other citation details:: The former name of the data set on the NRIS web site was "ab45"
Online linkage: https://ftpgeoinfo.msl.mt.gov/Data/Spatial/NonMSDI/Shapefiles/MineDist1994.zip

Browse graphic file name: https://ftpgeoinfo.msl.mt.gov/Documents/Maps/Thumbnails/20041201_497_thumb.jpg
Browse graphic file description: Thumbnail image of Montana Mining Districts map

Browse graphic file name: https://ftpgeoinfo.msl.mt.gov/Documents/Maps/Individual/20041201_497_1994_MiningDist.pdf
Browse graphic file description: Montana Mining Districts Map

Abstract:

Mining Districts of Montana, developed by the Montana Abandoned Mines Reclamation Bureau. Based on a map of mining districts made in 1935, with some districts revised or removed, with additional districts added. The districts were revised again in May of 1995.

Mining districts were formed by associations of miners in a region who developed rules and laws to govern mining in the district. They sometimes established a monument to serve as the reference point for surveys in the district and created a description of the district boundary. More information on the Montana Department of Environmental Quality Abandoned Mines Program can be found here: https://deq.mt.gov/cleanupandrec/Programs/aml
Mining districts are no longer legal entities. Historical narratives describing the mining districts and their boundaries are available at https://gis.mtdeq.us/portal/apps/instant/attachmentviewer/index.html?appid=be568ffa2d624561bd0a283e7d6adf92.

Purpose:

This data was developed to facilitate the understanding of historical documents about mining. For some mines, the only record of their locations are descriptions of their situation within a mining district.

Time period of content:

Calendar date: 12/01/1993
Currentness reference: Publication Date

Status:

Progress: Complete

Access constraints: None

Use constraints:

The Montana State Library provides this product/service for informational purposes only. The Library did not produce it for, nor is it suitable for legal, engineering, or surveying purposes. Consumers of this information should review or consult the primary data and information sources to ascertain the viability of the information for their purposes. The Library provides these data in good faith but does not represent or warrant its accuracy, adequacy, or completeness. In no event shall the Library be liable for any incorrect results or analysis; any direct, indirect, special, or consequential damages to any party; or any lost profits arising out of or in connection with the use or the inability to use the data or the services provided. The Library makes these data and services available as a convenience to the public, and for no other purpose. The Library reserves the right to change or revise published data and/or services at any time.

Point of contact:

Montana State Library
PO Box 201800
Helena, Montana 59620-1800
Telephone: 406-444-5354
TDD/TTY telephone: Montana Relay 711
Fax: 406-444-0266
E-Mail: geoinfo@mt.gov

Data Quality Information:

Attribute accuracy report:

Mining District names and alternate names have been reviewed by the Dept. of Environmental Quality.

Logical consistency report:

Polygon and arc-node topology exist. Some districts include the boundaries of old districts that have been deleted, and there is no indication in the polygon representing the old district of which new district it belongs to.

Completeness report: The data set is complete.

Horizontal Positional Accuracy Report:

Poor. Some coordinates appear to be as far as 400 meters from their correct positions.

Lineage:

Source information:

Originator:: Uuno M. Sahinen
Montana College of Mineral Science and Technology
Publication date: 1935
Title: Mining Districts of Montana
Other citation details: Masters Thesis
Source contribution: Part of the data set was digitized from this map.
Calendar date: 1935

Source information:

Originator: Montana Bureau of Mines and Geology
Publication date: 1935
Title: Memoir #15, Plate 1
Type of source media: paper
Source contribution: Part of the data set was digitized from this source.
Calendar date: 1935

Process step:

Digitize the source maps and make revisions as directed by the Montana Dept. of Environmental Quality (DEQ). Contact person at the DEQ is Joel Chavez.


Process date: 01/21/1994

Process step: Revise the map as directed by the DEQ.


Process date: 05/12/1995

Spatial Data Organization Information:

Point and vector object information:

SDTS object type: G-polygon

SDTS object count: 231

Spatial Reference Information:

Horizontal coordinate system definition:

Grid coordinate system name: State Plane Coordinate System 1983

SPCS zone identifier: 2500

Lambert conformal conic:

Standard parallel: 45
Standard parallel: 49
Longitude of central meridian: -109.5
Latitude of projection origin: 44.25
False easting: 600000.00000
False northing: 0.00000

Planar distance units: meters

Geodetic model:

Horizontal datum name: North American Datum of 1983
Ellipsoid name: Geodetic Reference System 80
Semi-major axis: 6378137
Denominator of flattening ratio: 298.257

Entity and Attribute Information:

Entity type label: MineDist1994.dbf

Entity type definition: Polygon Attribute Table

Attribute label: FID

Attribute definition: Shapefile sequence number

Attribute label: Shape

Attribute definition: Feature geometry

Attribute label: Area

Attribute definition: area of the polygon in square meters

Attribute label: Perimeter

Attribute definition: perimeter of the polygon in meters

Attribute label: AB45_

Attribute definition: Sequence number from original coverage version of the data

Attribute label: AB45_ID

Attribute definition: ID number from original coverage version of the data

Attribute label: NAME

Attribute definition: District name

Attribute label: NUM

Attribute definition: District Number (character version)

Attribute label: TYPE

Attribute definition: Code for old vs new districts

Attribute label: ACRES

Attribute definition: Area, acres
Range domain minimum: 0
Range domain maximum: 898662
Attribute units of measure: acres

Attribute label: NUMN

Attribute definition: District Number (integer)
Range domain minimum: 1
Range domain maximum: 200

Attribute label: AKA

Attribute definition: List of alternate names

Attribute label: SCALE

Attribute definition:: Map scale of large scale base map
This is the scale that was used for plotting the large-scale base maps.

Attribute label: XC

Attribute definition: X coordinate of base map center
Range domain minimum: 129621
Range domain maximum: 669453

Attribute label: YC

Attribute definition: Y coordinate of base map center
Range domain minimum: 32825
Range domain maximum: 518454

Attribute label: ANGLE

Attribute definition:: Coarse base map rotation angle.
For large-scale base maps of individual districts, this attribute flags whether or not the map should be rotated 90 degrees to fit on a page.
Range domain minimum: 0
Range domain maximum: 90

Attribute label: SIZE

Attribute definition: Code for base map size/scale

Attribute label: GRIDANGLE

Attribute definition:: Fine rotation angle for true north
For large-scale base maps of individual districts, this attribute tells the difference between grid north and true north, allowing rotation of the map so that true north is square with the neatline.
Range domain minimum: -0.5
Range domain maximum: 4.2

Attribute label: UTMZONE