Mt. Jasper Rhyolite
date: label: Accession Date
content: 29 Dec 2016
label: Collection Date
content: Not given
name: label: Collector
content: Not Given
label: Donor Name
content: Estate Of John D. Holland
notes: label: Notes
content: L-377 (Mt. Jasper Rhyolite): Not a collection from archaeological context. Unknown collection procedure. Collection includes raw material, outer surface, and naturally-weathered specimens.
label: Notes
content: L-377 (Mt. Jasper Rhyolite)
label: Notes
content: Mt. Jasper rhyolite, also known as Ammonoosuc, Berlin Jasper, Mt. Jasper, or Berlin Rhyolite, is a metarhyolite. It is grayish-green with pronounced flow-banding, grayish-green and orange, maroon, gray, brownish yellow or brown. When weathered it becomes clouded with patches of red brick color indicating that ferrous iron has changed to the ferric state. Clouding can develop preferentially along sets of flow-bands causing striped red and green effect. It may also become patina a light brownish yellow or, under normal soil conditions, chalky yellow, pink, or white color. It has a coarse to smooth texture. Deposits include rhyolitic dikes.
label: Notes
content: Geology remarks: Epoch- Ordovician, Form- Ammonoosuc
label: Notes
content: Location remarks: Mt. Jasper, a prehistoric quarry and workshop, Mt. Jasper, Coos Co., New Hampshire. Mt. Jasper is located on the northwest edge of the city of Berlin. Quarry is a mine 10m deep near the top of the mountain, the workshop at the base of the Dead River.
label: Notes
content: Archaeology remarks: Middle Archaic, Late Archaic, Ceramic Period projectile points from the workshop area; Rumford Falls I Site; Late Paleoindian occupation, Waterville-Winslow Bridge, Watertown, Maine
label: Record Last Modified
content: 22 Nov 2019
label: Specimen Count
content: 27
place: label: Place
content: New Hampshire, 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: A598768-0
objectType: label: Object Type
content: Stone