Shell Rock (Silicified Coral) Chert
date: label: Accession Date
content: 29 Dec 2016
label: Collection Date
content: Not given
name: label: Collector
content: James Regan
label: Collector
content: Dr. Anthony Romano
label: Donor Name
content: Estate Of John D. Holland
notes: label: Notes
content: L-1437 (Shell Rock Chert): Unknown collection procedure. Collection includes raw material, outer surface, surrounding matrix, archaeological specimens (?), modern flint-knappers' work, heat-treated specimens, and naturally-weathered specimens.
label: Notes
content: L-1437 (Shell Rock Chert): Some specimens are raw, others heat-treated to 525 degrees F. and 625 degrees F. Chert turned pink.
label: Notes
content: Shell Rock is a chert or fossilized coral. It is faintly mottled and white to light gray in color. The white type thermally alters to light pink at 525-625 degrees F. When weathered the cortex becomes chalky and generally white. It has fossilized colonial coral (Hexagonaria) and colorless crystal quartz lined vug inclusions. It has a relatively homogeneous texture - flaking quality may generally be described as good.
label: Notes
content: Geology remarks: Form- Shell Rock
label: Notes
content: Location remarks: East of Albert Lea, Freeborn Co., MN
label: Notes
content: Archaeology remarks: Sherbuns Creek site, Fairborn Co., MN
label: Record Last Modified
content: 22 Nov 2019
label: Specimen Count
content: 9
place: label: Place
content: Austin, Mower County, Minnesota, 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: A598602-0
objectType: label: Object Type
content: Stone