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Henson Mine, Pope Co., Illinois, USA

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Latitude & Longitude (WGS84): 37° 27' 52'' North , 88° 28' 14'' West
Latitude & Longitude (decimal): 37.46456,-88.47077
GeoHash:G#: dn9j4u1wc
Other regions containing this locality:Illinois-Kentucky Fluorspar District, Illinois/Kentucky, USA
Locality type:Mine
Köppen climate type:Cfa : Humid subtropical climate

The last mine in the fluorspar district developed in vein deposits. Perhaps the western-most mine as well, located 8 miles W-NW of Rosiclare in the headwaters of Little Grand Pierre Creek. (A. Goldstein)

Mineral List

7 valid minerals.

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on

252.17 - 541 Ma

ID: 3187973
Paleozoic sedimentary rocks

Age: Paleozoic (252.17 - 541 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

323.2 - 330.9 Ma

ID: 2996844
Upper Pope Group (Tar Springs Sandstone through Kinkaid Limestone)

Age: Mississippian (323.2 - 330.9 Ma)

Stratigraphic Name: Vienna Limestone; Waltersburg Formation; Menard Limestone; Palestine Sandstone; Clore Formation; Degonia Sandstone; Negli Creek Limestone; Cave Hill Shale Member; Goreville Limestone Member; Grove Church Shale Member

Comments: According to the stratigraphic column, the Pope Group only occurs in southern Illinois (south of 40 degrees north latitude). The upper part of the Pope Group is comprised, from oldest to youngest, of the Tar Springs Sandstone (0-150’), Vienna Limestone (0-60’), Waltersburg Formation (0-100’), Menard Limestone (0-150’, includes the Walche Limestone, Scottsburg Limestone, and Allard Limestone Members), Palestine Sandstone (0-120’), Clore Formation (0-150’, includes the Cora Limestone, Tygett Sandstone, and Ford Station Limestone Members), Degonia Sandstone (0-150’), and Kinkaid Limestone (0-230’, includes the Negli Creek Limestone, Cave Hill Shale, Goreville Limestone, and Grove Church Shale Members).

Lithology: Major:{limestone,sandstone,shale}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Data and map coding provided by, used under Creative Commons Attribution 4.0 License

This page contains all mineral locality references listed on This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.


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Rocks & Minerals (1988): 63: 225.
Mineralogical Record (1997): 28: 3-49.

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