Animikie Red Ace pegmatite, Pine River pegmatites, Fern, Florence Co., Wisconsin, USA
|Latitude & Longitude (WGS84):||45° 51' 2'' North , 88° 21' 10'' West|
|Latitude & Longitude (decimal):||45.8505555556, -88.3527777778|
The most complex and largest pegmatite in the Hoskins Lake pegmatite field. These are undated, but probably are related to the intrusion of 1,760 million year old Bush Lake Granite.Location is in Sec 22, T39N R17E. The coordinates mark a prominent outcrop. This locality is now part of the "Pine River Wild Rivers Area", and collecting is no longer permitted.
45 valid minerals.
This information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This data will improve over time as more accurate maps and data sets are added.
|Paleoproterozoic1600 - 2500 Ma||Mafic metavolcanic rocks|
Mafic metavolcanic rocks - Dominantly tholeiitic basalt and basaltic andesite flows and tuffs; associated with sheet dikes, massive and layered metagabbro, and ultramafic rocks. In northeastern Wisconsin, rocks have been named the Quinnesec Formation.
|Paleoproterozoic1600 - 2500 Ma||Paleoproterozoic volcanic rocks|
May include hypabyssal intrusions.
|Paleoproterozoic1600 - 2500 Ma||Paleoproterozoic volcanic: undivided volcanic rocks|
Volcanic: undivided volcanic rocks
References for regional geology:
Data provided by Macrostrat.org
Garrity, C.P., and Soller, D.R.,. Database of the Geologic Map of North America: adapted from the map by J.C. Reed, Jr. and others (2005). U.S. Geological Survey Data Series 424 .
USGS compilers. State geologic map data. State Maps.
Geological Survey of Canada. Generalized geological map of the world and linked databases. doi:10.4095/195142. Open File 2915d.
Falster, A. U., W.B. Simmons & K. L. Webber (1995) Niobium-Tantalum minerals from the Animikie Red Ace Pegmatite, Florence County, Wisconsin: Rocks and Minerals: 70(2): 126-127.
Falster, A. , W.B. Simmons & P.B. Moore (1996) The mineralogy and geochemistry of the Animikie Red Ace pegmatite in Florence County, Wisconsin: Rec. Res. Dev. Mineral: 1: 7-67.
Falster, A. U. (2001), A second world occurrence for behierite in Florence County, Wisconsin: Proceedings 28th Rochester Mineralogical Symposium: 8-9.
Sirbescu, M. L. C., E. E. Hartwick, E.E., & J. J. Student (2008): Rapid crystallization of the Animikie Red Ace Pegmatite, Florence county, northeastern Wisconsin: inclusion microthermometry and conductive-cooling modeling. Contributions to Mineralogy and Petrology: 156: 289-305.