Chromite deposits in central part Stillwater Complex, Sweet Grass County, Montana: A digital database for the geologic map of the east slope of Iron Mountain

Online link https://geo-nsdi.er.usgs.gov/metadata/open-file/01-321/metadata.faq.html
Description The digital geologic map of the east slope of Iron Mountain, Sweet Grass County, Montana was prepared from preliminary digital datasets digitized by Optronics Specialty Co., Inc. from a paper copy of plate 10 from UGSG Bulletin 1015-D (Howland, 1955).The
Originators Howland, A. L. and Moyer, Lorre A.
Publication U.S. Geological Survey Open-File Report 01-321

Related topics

States or counties

Overview of attributes

U.S. Geological Survey Open-File Report 01-321 contains a detailed
description of each attribute code and a reference to the associated map
symbols on the map source materials.  The GIS includes a geologic linework
arc attribute table, ironmtn.aat, that relates to the ironmtn.con (contact
look-up table), ironmtn.st2 (structure look-up table), and the ironmtn.ref
(source reference look-up table) files; a rock unit polygon attribute table,
ironmtn.pat, that relates to the ironmtn.ru (rock unit look-up table) and
ironmtn.ref (source reference look-up table) files; and a geologic map
symbol point attribute table, ironmtnp.pat, that relates to the ironmtnp.sym
(structural point data look-up tables) and ironmtnp.ref (source reference
look-up table) files.

http://pubs.usgs.gov/of/2001/0321/pdf/IRONMTN.PDF