Ancaster (AKA Goat Island) Chert
date: label: Accession Date
content: 29 Dec 2016
label: Collection Date
content: Jun 1988
name: label: Collector
content: J. D. Holland
label: Donor Name
content: Estate Of John D. Holland
notes: label: Notes
content: L-851 (Ancaster Chert): Collection includes raw material, outer surface, and naturally-weathered specimens.
label: Notes
content: L-851 (Ancaster Chert)
label: Notes
content: Ancaster Chert is also known as Goat Island and Lockport. It is white or dark gray to bluish gray, commonly mottled with darker spots. This is due to the accumulation of foreign matter such as clay carbonaceous matter, limonite, etc. It becomes pink, red, or purple when heat-treated. When weathered it becomes dirty white with reddish-brown discoloration from the weathering of the included pyrite. It has inclusions of xenolithic partially silicified dolomite, sponge spicules, and other fossils. It has a medium to coarse texture. Deposits include elongated nodules.
label: Notes
content: Geology remarks: Epoch- Silurian, Series- Middle Silurian, Form- Lockport, Member- Oak Orchard/Goat Island/Eramosa
label: Notes
content: Location remarks: Niagara escarpment, Stoney Creek, Ontario, Canada; Oak Orchard Creek Member along Orchard Creek from falls at Shelby south for a distance of about 2 miles, nodules of white chert near base, Medina quadrangle; Clarendon Stone Company Quarry, southern outskirts of Clarendon west of Route 237; Albion quadrange; Genesee County, NY.
label: Notes
content: Archaeology remarks: Late Archaic tools, Western New York
label: Record Last Modified
content: 22 Nov 2019
label: Specimen Count
content: 8
place: label: Place
content: Ontario, Canada, 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: A599283-0
objectType: label: Object Type
content: Stone