Structure: Gentle Dip WNW, 30 Ft/Mi Or Less, Off Bend Arch

Tectonics: Interior Basin; Deltaic Red Bed Margin

Deposit: CUMMINS (1891, PL. 18) SHOWED 3 PROSPECTS IN THIS AREA. MARCY SAW COPPER ON JULY 26, 1854, AT BASE OF TABLETOP MOUNTAIN. REFERENCES ARE MARCY (1854, P. 8; 1866, P. 188), NEIGHBOURS (1975, P. 140, 163, 304), PARKER (1856, P. 140-141), WILLIAMS AND LEE (1947, P. 117), CUMMINS (1890, P. 196; 1891, P. 451, 453, PL. 18; 1893, P. 233), AND RICHARD (1915, P. 641). PETERMANN (1859) MENTIONS THIS COPPER.

Development: Several tons of copper ore were taken out a few years before 1889, according to Cummins (1890, p. 196; 1891, p. 453, pl. 18); several deep shafts were sunk, and several thousand pounds of ore were taken out. More copper was 3 mi to NW (Cummins, 1893, p. 233). Several tons of ore were shipped to a smelter.

Geology: Geology by Garrett, Lloyd, and Laskey (1930), and Hentz and Brown (1987). Tabletop Mountain is capped by a 4-ft limestone.

Rock formation(s): Clear Fork Group, Vale Formation, Sandstone No. 5
Clear Fork Group, Vale Formation, Sandstone No. 5

Ore(s): Reducing Environment, Stratigraphic

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.

ⓘ Copper

Mineral List

ⓘ Malachite

1 valid mineral.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

ⓘ Sandstone

ⓘ Shale

Detailed Mineral List:

ⓘ Malachite

Formula: Cu₂(CO₃)(OH)₂

References:

(2005) Mineral Resources Data System (MRDS), US Geological Survey.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 5 - Nitrates and Carbonates
ⓘ	Malachite	5.BA.10	Cu₂(CO₃)(OH)₂

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Malachite	Cu₂(CO₃)(OH)₂
C	Carbon
C	ⓘ Malachite	Cu₂(CO₃)(OH)₂
O	Oxygen
O	ⓘ Malachite	Cu₂(CO₃)(OH)₂
Cu	Copper
Cu	ⓘ Malachite	Cu₂(CO₃)(OH)₂

Other Databases

Link to USGS MRDS:	10022061

Other Regions, Features and Areas containing this locality

North AmericaContinent

North America PlateTectonic Plate

Fort Worth BasinBasin
Granite-Rhyolite ProvinceMagmatic Province
Shawnee DomainDomain

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Marcy, R.B., (1856), Senate Executive Document 60, 34th Congress, 1st Session, 48 P. (p. 8).

Parker, W.B., (1856), Notes...Marcy...1854: Hays and Zell, Phil., 242 P.

Peterman, A., (1859), Kapitan R.B. Marcy's Erforschung Des Quellgebietes Des Big Witchita Und Brazos Im Innern Von Nord-amerika: Mittheilungen Aus Justus Perthes Geographischer Anstalt Uber Wichtige Neue Erforschungen Auf Dem Gessamtgebiete Der Geographie Von Dr. A. Petermann (gotha; Justus Perthes), Germany, P. 36-40, Pl. 2 (map) (p. 38, Map).

Marcy, R.B., (1866), Thirty Years Army Life: New York, Harper and Bros., 442 P. (p. 188).

Cummins, W.F., (1890), Texas Geological Survey, 1st Annual Report, P. 185-197 (p. 188, 196).

Cummins, W.F., (1891), Texas Geological Survey, 2nd Annual Report, P. 359-552 (p. 451, 453, Pl. 18).

Cummins, W.F., (1893), Texas Geological Survey, 4th Annual Report, P. 177-238 (p. 233).

Richard, Louis M. (1915) Copper deposits in the "Red Beds" of Texas. Economic Geology, 10 (7) 634-650 doi:10.2113/gsecongeo.10.7.634p.641

Garrett, M.M., Lloyd, A.M., and Laskey, G.E., Compilers, (1930), Geologic Map of Baylor Co., Texas: Texas Bureau of Economic Geology, Scale 1:48,000.

Williams, J.W., and Lee, Ernest, (1947), Marcy...1854: West Texas Historical Association, Yearbook, V. 23, P. 107-132 (p. 117).

Neighbors, K.F., (1975), Robert Simpson Neighbors and the Texas Frontier, 1836-1859: Waco, Textan Press, 349 P. (p. 140, 163, 304).

Hentz, T.F., and Brown, L.F., Jr., Compilers, (1987), in Barnes, V.E., Geologic Atlas of Texas, Wichita Falls-lawton Sheet: Texas Bureau of Economic Geology, Scale 1:250,000.

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