Mill Creek Chert
date: label: Accession Date
content: 29 Dec 2016
label: Collection Date
content: Sep 1987
name: label: Collector
content: H. R. Moore
label: Donor Name
content: Estate Of John D. Holland
notes: label: Notes
content: L-128 (Mill Creek Chert): Collection includes raw material, outer surface, heat-treated specimens, and naturally-weathered specimens
label: Notes
content: L-128 (Mill Creek Chert)
label: Notes
content: Mill Creek Chert, also known as Union County (IL), Montana City, or Devil's Eyebrow (MT), is brown or gray chert. It occasionally has shades if yellow or maroon, mottling is common, banding is rare. It becomes chalky light gray with iron stains when weathered. I may have inclusions of small fossil fragments. The texture is usually grainy, occasionally smooth. Deposits are almost exclusively long, flat nodules or residuum in stream beds or ridges.
label: Notes
content: Geology remarks: Epoch- Mississippian, Form- Salem Limestone
label: Notes
content: Location remarks: Clear Creek, Dutch Creek, Lingle Creek, Cooper Creek, Mill Creek in Union and Alexander counties, IL. Collected samples in Dutch and Cooper creeks. Located a lithic workshop on the ridge immediately above Cooper Creek
label: Notes
content: Archaeology remarks: Utilizied from Paleoindian through Mississippian times. However, ultilization quite limited except for the Mississippian period.
label: Record Last Modified
content: 22 Nov 2019
label: Specimen Count
content: 29
place: label: Place
content: Union County, Illinois, 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: A598303-0
objectType: label: Object Type
content: Stone