Indiana · Martin County
Producer
National Gypsum Co. Shoals Mine
Martin County, Indiana, United States
Gypsum-Anhydrite
⌖ Show on map
USGS source ↗
Description
National Gypsum Co.
Commodities
Primary
Gypsum-Anhydrite
Commodity type
N
Deposit
Deposit type
Sedimentary
Deposit size
L
Workings
Underground
Orebody form
LINEAR
Ore control
Barrier Restricted Circulation Of Marine Water Allowing For Evapora Te Deposition In Small Embayments.
Materials
Ore minerals
Anhydrite, Gypsum
Gangue
Calcite, Chlorite, Dolomite, Illite, Quartz
Geology
Host rock
Evaporite · St. Louis Limestone (Lower Member)
Structure
Cincinnati Arch Trends Nw-Se Through North Central Indiana.
Tectonic setting
Illinois Basin-Shallow Marine Environment Southwest Of Cincinnati Arch.
Alteration
Dissolution And Leaching By Ground Water May Remove Some Gypsum
Economic & production
Development status
Producer
First production
1955
Discovery year
1951
Identification
Deposit ID
10080847
MRDS ID
W032229
Alternate names
Shoals
Region
NA
Data score
E
Coordinates
38.68338, -86.71527