Central Texas Iron Ore Resource, Texas, USAi
Regional Level Types | |
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Central Texas Iron Ore Resource | Mining District |
Texas | State |
USA | Country |
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Locality type:
Commodity: Suitable for pigments except for carbonate content. (see tx beg ri 53 for test results.)
Deposit type: Oolitic ironstones
Geology: Sediments deposited in a large, shallow bay.
Rock formation(s): Upper Unit, Hickory Sandstone Mbr, Riley Formation
Ore(s): Goethite Coats Oolites, Sand Grains, Clasts. Hematite Replaces Goethite.
Counties of: Schleicher, Coke, Taylor, Runnels, Callahan, Eastland, Crockett, Irion, Concho, McCulloch, San Saba, Lampasas, Mills, Comanche, Brown, Coleman, Nolan, Tom Green, Llano, Menard, Sutton, Kimble, Mason
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
5 valid minerals.
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 DiagramDetailed Mineral List:
ⓘ Calcite Formula: CaCO3 Reference: U.S. Geological Survey, (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. |
ⓘ Dolomite Formula: CaMg(CO3)2 Reference: U.S. Geological Survey, (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. |
ⓘ 'Feldspar Group' Reference: U.S. Geological Survey, (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. |
ⓘ Goethite Formula: α-Fe3+O(OH) Reference: U.S. Geological Survey, (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. |
ⓘ Hematite Formula: Fe2O3 Reference: U.S. Geological Survey, (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. |
ⓘ Quartz Formula: SiO2 Reference: U.S. Geological Survey, (2005) Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 4 - Oxides and Hydroxides | |||
---|---|---|---|
ⓘ | Goethite | 4.00. | α-Fe3+O(OH) |
ⓘ | Hematite | 4.CB.05 | Fe2O3 |
ⓘ | Quartz | 4.DA.05 | SiO2 |
Group 5 - Nitrates and Carbonates | |||
ⓘ | Calcite | 5.AB.05 | CaCO3 |
ⓘ | Dolomite | 5.AB.10 | CaMg(CO3)2 |
Unclassified Minerals, Rocks, etc. | |||
ⓘ | 'Feldspar Group' | - |
List of minerals for each chemical element
H | Hydrogen | |
---|---|---|
H | ⓘ Goethite | α-Fe3+O(OH) |
C | Carbon | |
C | ⓘ Calcite | CaCO3 |
C | ⓘ Dolomite | CaMg(CO3)2 |
O | Oxygen | |
O | ⓘ Calcite | CaCO3 |
O | ⓘ Dolomite | CaMg(CO3)2 |
O | ⓘ Quartz | SiO2 |
O | ⓘ Goethite | α-Fe3+O(OH) |
O | ⓘ Hematite | Fe2O3 |
Mg | Magnesium | |
Mg | ⓘ Dolomite | CaMg(CO3)2 |
Si | Silicon | |
Si | ⓘ Quartz | SiO2 |
Ca | Calcium | |
Ca | ⓘ Calcite | CaCO3 |
Ca | ⓘ Dolomite | CaMg(CO3)2 |
Fe | Iron | |
Fe | ⓘ Goethite | α-Fe3+O(OH) |
Fe | ⓘ Hematite | Fe2O3 |
References
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Year (asc) Year (desc) Author (A-Z) Author (Z-A)Barnes, V.E., and Schofield, D.A., (1964), Potential Low-grade Iron Ore and Hydraulic-fracturing Sand in Cambrian Sandstones, Northwest Llano Region, Texas: Tx Beg Ri 53, 58p
Bridge, J., Barnes, V.E., and Cloud, P.E., Jr., (1947) Stratigraphy of the Upper Cambrian, Llano uplift, Texas: Geological Society of America Bulletin v.56, no. 1, p. 109-123.
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