Balsam Lake Chert
date: label: Accession Date
content: 29 Dec 2016
label: Collection Date
content: Mar 1991
name: label: Collector
content: J. D. Holland
label: Donor Name
content: Estate Of John D. Holland
notes: label: Notes
content: L-875 (Balsam Lake Chert): Collection includes raw material, outer surface, surrounding matrix, and naturally-weathered specimens.
label: Notes
content: L-875 (Balsam Lake Chert)
label: Notes
content: Balsam Lake Chert, also known as Trent Valley and Balsam Lake Speckled, is blackish or bluish gray. When weathered it becomes a light yellow brown patina. It may have "pellet" inclusions, echinoderm, solitary coral, or brachiopod fragments replaced by light colored quartz. Uniformly dull to vitreous luster. It is discontinuously bedded. Chert lenses pinch and swell behind bedding planes of host rock. Deposits can be occasionally nodular.
label: Notes
content: Geology remarks: Epoch- Ordovician, Series- Middle Ordovician, Form- Bobcaygeon, Member- Upper Bobcaygeon
label: Notes
content: Location remarks: Trent Valley, Ontario.
label: Notes
content: Archaeology remarks: n.d.
label: Record Last Modified
content: 22 Nov 2019
label: Specimen Count
content: 19
place: label: Place
content: Indian Point, Balsam Lake, 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: A599221-0
objectType: label: Object Type
content: Stone