Cedar Valley (AKA Cochrane) Chert
date: label: Accession Date
content: 29 Dec 2016
label: Collection Date
content: 22 Feb 1996
name: label: Collector
content: Dr. Anthony Romano
label: Donor Name
content: Estate Of John D. Holland
notes: label: Notes
content: L-1274 (Cedar Valley Chert): Provenience includes bedrock. Not a collection from archaeological context. Collection includes heat-treated specimens.
label: Notes
content: L-1274 (Cedar Valley Chert): Cedar Valley formation; Devonian; Heat-treated 400-500 degrees F; 12 hours too much TR; This may be the Jasperoid Variety; Also occurs at Cedar Valley, Minnesota.
label: Notes
content: Cedar Valley Chert is also known as Airport, Boyle, Camden, Cochrane, Coffee Creek, Falls, Fredonia, Hopkinsville, Jeffersonville, Kentucky Blue, Mammoth Cave, Marble Hill, Munfordville, Root Beer, Root River, Scipio, Solon, Sonora, or Ste. Genevieve. It is a white, gray, red, very light tan (IL), or brown jasper like (WI) chert or porcellanite. It may be mottled and banded. When heat treated, it becomes a dark cinnamon color. It has a limestone matrix when weathered. Deposited in limestone. SEE ALSO: AIRPORT, BOYLE, CAMDEN, COCHRANE, STE. GENEVIEVE
label: Notes
content: Geology remarks: Epoch- Devonian, Series- Middle Devonian, Form- Cedar Calley Limestone
label: Notes
content: Location remarks: Illinois; southeast Minnesota; LaCross, Wisconsin.
label: Notes
content: Archaeology remarks: Scarcity of outcrops probably made it a relatively unimportant raw material resource in prehistoric times.
label: Record Last Modified
content: 22 Nov 2019
label: Specimen Count
content: 7
place: label: Place
content: Buffalo/Trempealeau County, Wisconsin, United States, North America
topic: label: Topic
content: Archaeology
setName: label: See more items in
content: Anthropology
dataSource: label: Data Source
content: NMNH - Anthropology Dept.
identifier: label: Accession Number
content: 2071475
label: USNM Number
content: A599820-0
objectType: label: Object Type
content: Stone