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Geochemical survey of the Lusk Creek Roadless Area, Pope County, Illinois

Miscellaneous Field Studies Map 1405-B

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Abstract

The Lusk Creek Roadless Area (Index map) lies along the western edge of the Illinois-Kentucky fluorspar district in which flourite deposits occur as lenticular-type veins emplaced along fult zones or as tratiform-shaped bedding-replacement deposits that occur along fault zones (Grogan and Bradbury, 1967; Trace, 1974). Although mineralogy varies between deposits, Trace (1974) points out that the principal minerals are fluorite (CaF) and calcite (CaCO3), and associated with these minerals are lesser amounts of sphalerite (ZnS), galena (PbS), and barite (BaSO4). Minor quantites of iron-rich dolomite (CaMg(CO3)2), pyrite (FeS2),  and alteration products of zinc, lead, and copper minerals also are found. 

Study Area

Additional publication details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Geochemical survey of the Lusk Creek Roadless Area, Pope County, Illinois
Series title:
Miscellaneous Field Studies Map
Series number:
1405
Chapter:
B
Year Published:
1984
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
Reston, VA
Description:
2 Plates: 33.26 x 32.91 inches and 38.57 x 44.87 inches
Country:
United States
State:
Illinois
Other Geospatial:
Lusk Creek
Scale:
24000
Online Only (Y/N):
N
Additional Online Files (Y/N):
N