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Wheatley Pegmatite Mine (Big Hicks Mine; Moneta Mine), Moneta-Forest, Bedford Co., Virginia, USA

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Latitude & Longitude (WGS84): 37° 11' North , 79° 37' West
Latitude & Longitude (decimal): 37.18333,-79.61667
Köppen climate type:Cfa : Humid subtropical climate


A mine in pegmatite located near Moneta.


Mineral List


7 valid minerals.

Rock Types Recorded

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Regional Geology

This geological map and associated 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 does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Neoproterozoic
541 - 1000 Ma



ID: 2794112
Ashe Formation - Moneta Gneiss

Age: Neoproterozoic (541 - 1000 Ma)

Stratigraphic Name: Ashe Formation

Description: Moderate-olive-brown to dusky yellowish- green to black-and-white-banded, medium- to fine-grained biotite-hornblende gneiss, with interlayers of light gray, fine-grained quartz-feldspar gneiss, amphibolite, and mica schist. Felsitic crystal tuff breccia, feldspathic conglomerate, and mafic and felsic dikes and sills are recognized within the Moneta, especially along the James River west of Lynchburg. Wang and Glover (1991) recognized two kinds of mafic metavolcanic rocks in this unit, lavas and tuffs. The lavas have well-preserved hyaloclastic textures; metatuffs commonly contain delicate mineral segregation lamination. Mineralogy: (1) quartz + plagioclase + microcline + biotite + muscovite + garnet + magnetite-ilmenite; (2) hornblende + plagioclase + biotite + quartz + magnetite-ilmenite + titanite; (3) hornblende + plagioclase + garnet + biotite + magnetiteilmenite. Geophysical signature: broad, elongate, positive magnetic anomaly. Numerous pegmatite dikes and sills concentrated within the hornblende biotite gneiss were mined for feldspar in the area between Moneta and Forest where the unit was first described by Pegau (1932). In the Lynchburg area the Moneta was mapped as Reusens Migmatite by Brown (1958). It was interpreted to be a Late Precambrian volcanic-sedimentary complex by Conley and Henika (1970) and Wang and Glover (1991). The Moneta is here assigned to the Lynchburg Group because it has an intertonguing re la tion ship with basal conglomeratic Lynchburg rocks and with similar rocks in the base of the Ashe Formation southwest of Lynchburg.

Comments: Lynchburg Group; Blue Ridge Anticlinorium (Southwest)

Lithology: Major:{hornblende gneiss}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License



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References

Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Rocks & Minerals: 60: 165.
Arthur A. Pegau (1932) Pegmatite Deposits of Virginia. Virginia Geological Survey; Bulletin 33.
Deposit:: Griffitts, Jahns, And Lemke, 1953, Mica Deposits Of The Southeastern Piedmont, Part 4, Outlying Deposits In Virginia, U.S. Geol. Survey Prof. Paper 248-c, Pp. 171-202
Deposit:: BROWN, W.R., 1962, MICA A

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