Johns Valley Chert
date: label: Accession Date
content: 29 Dec 2016
label: Collection Date
content: 1988
name: label: Collector
content: Frank Cowan
label: Donor Name
content: Estate Of John D. Holland
notes: label: Notes
content: L-550 (Johns Valley Chert): Direct collection from outcrop. Not a collection from archaeological context. Collection includes raw material, outer surface, surrounding matrix, and naturally-weathered specimens.
label: Notes
content: L-550 (Johns Valley Chert)
label: Notes
content: Johns Valley Chert is a blue-black, gray, chocolate brown, variegated, or marbled chert. When heat-treated it becomes very high quality. It becomes brittle at low temperatures and explodes in excess of 190 degrees. It has a very high texture. It looks like the fine Brandenburg or Wyandotte chert of Harrison Co., Indiana. Deposits are nodular.
label: Notes
content: Geology remarks: Form- Johns Valley Shale
label: Notes
content: Location remarks: Ouchita Mountains, Oklahoma, SE; Outcrops in the Johns Valley Shale Formation.
label: Notes
content: Archaeology remarks: n.d.
label: Record Last Modified
content: 22 Nov 2019
label: Specimen Count
content: 29
place: label: Place
content: Oklahoma, 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: A599210-0
objectType: label: Object Type
content: Stone