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Fannett Dome (Fannett Dome Mine; Fannett Dome Sulfur Mine; Fannett Oil Field), Fannett, Jefferson Co., Texas, USA

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Key
Lock Map
Latitude & Longitude (WGS84): 29° 52' 19'' North , 94° 15' 50'' West
Latitude & Longitude (decimal): 29.87222,-94.26389
GeoHash:G#: 9vkcyyp4k
Locality type:Dome
Köppen climate type:Cfa : Humid subtropical climate


A salt dome located 6.1 km (3.8 miles) SSW of Fannett, on private land. The dome was discovered in 1925. Operated by Texas Gulf. MRDS database stated accuracy for this location is 100 meters.

Mineralization is a salt dome deposit (Mineral occurrence model information: Model code: 255; USGS model code: 35a.7 (35ag); Deposit model name: Salt-dome sulfur), hosted in the Middle Jurassic Louann Limestone and salt. The ore body has a depth-to-top of 396.24 meters. The depth to caprock is 741 feet, to the sulfur it is 1,300 feet and to the salt it is 2,080 feet. The of the salt was calculated at 1.0 cubic mile to a depth of 10,000 feet. Local alteration includes biogenic alteration of anhydrock to limestone. Local rocks include rocks of the Beaumont Formation, areas predominantly clay.

Local geologic structures include a piercement salt dome.

Workings include underground openings comprised of the wells and surface infrastructure necessary for the Frasch process mining of sulfur.

Production data are found in: Halbouty, Michel T. (1979).

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

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


Mineral List


11 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Alabandite
Formula: MnS
Reference: R&M 66:3 pp 196-224
Anhydrite
Formula: CaSO4
Reference: R&M 66:3 pp 196-224
'Anhydrock'
Reference: USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10061158.
Aragonite
Formula: CaCO3
Reference: R&M 66:3 pp 196-224
Baryte
Formula: BaSO4
Reference: R&M 66:3 pp 196-224
Celestine
Formula: SrSO4
Reference: R&M 66:3 pp 196-224
Gypsum
Formula: CaSO4 · 2H2O
Reference: R&M 66:3 pp 196-224
Halite
Formula: NaCl
Reference: R&M 66:3 pp 196-224
Hauerite
Formula: MnS2
Reference: R&M 66:3 pp 196-224
'Limestone'
Description: Louann limestone. Middle Jurassic.
Reference: USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10061158.
'commodity:Limestone'
Reference:  
'Petroleum'
Reference: USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10061158.
Rhodochrosite ?
Formula: MnCO3
Reference: R&M 66:3 pp 196-224
'commodity:Salt'
Reference:  
Sphalerite
Formula: ZnS
Reference: R&M 66:3 pp 196-224
'commodity:Sulfur'
Formula: S
Reference:  
Sulphur
Formula: S8
Reference: R&M 66:3 pp 196-224

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Sulphur'1.CC.05S8
Group 2 - Sulphides and Sulfosalts
'Alabandite'2.CD.10MnS
'Hauerite'2.EB.05aMnS2
'Sphalerite'2.CB.05aZnS
Group 3 - Halides
'Halite'3.AA.20NaCl
Group 5 - Nitrates and Carbonates
'Aragonite'5.AB.15CaCO3
'Rhodochrosite' ?5.AB.05MnCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
'Anhydrite'7.AD.30CaSO4
'Baryte'7.AD.35BaSO4
'Celestine'7.AD.35SrSO4
'Gypsum'7.CD.40CaSO4 · 2H2O
Unclassified Minerals, Rocks, etc.
'Anhydrock'-
'Limestone'-
'Petroleum'-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Semi-metals and non-metals
Sulphur1.3.5.1S8
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Alabandite2.8.1.4MnS
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:2
Hauerite2.12.1.9MnS2
Group 9 - NORMAL HALIDES
AX
Halite9.1.1.1NaCl
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Rhodochrosite ?14.1.1.4MnCO3
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Anhydrite28.3.2.1CaSO4
Baryte28.3.1.1BaSO4
Celestine28.3.1.2SrSO4
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Gypsum29.6.3.1CaSO4 · 2H2O
Unclassified Minerals, Rocks, etc.
'Anhydrock'-
Aragonite-CaCO3
'Limestone'-
'Petroleum'-

List of minerals for each chemical element

HHydrogen
H GypsumCaSO4 · 2H2O
CCarbon
C AragoniteCaCO3
C RhodochrositeMnCO3
OOxygen
O AnhydriteCaSO4
O AragoniteCaCO3
O BaryteBaSO4
O CelestineSrSO4
O GypsumCaSO4 · 2H2O
O RhodochrositeMnCO3
NaSodium
Na HaliteNaCl
SSulfur
S AlabanditeMnS
S AnhydriteCaSO4
S BaryteBaSO4
S CelestineSrSO4
S GypsumCaSO4 · 2H2O
S HaueriteMnS2
S SphaleriteZnS
S SulphurS8
ClChlorine
Cl HaliteNaCl
CaCalcium
Ca AnhydriteCaSO4
Ca AragoniteCaCO3
Ca GypsumCaSO4 · 2H2O
MnManganese
Mn AlabanditeMnS
Mn HaueriteMnS2
Mn RhodochrositeMnCO3
ZnZinc
Zn SphaleriteZnS
SrStrontium
Sr CelestineSrSO4
BaBarium
Ba BaryteBaSO4

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

Cenozoic
0 - 66 Ma



ID: 3186031
Cenozoic sedimentary rocks

Age: Cenozoic (0 - 66 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Holocene - Pleistocene
0 - 2.588 Ma



ID: 2793451
Barrier island deposits

Age: Pleistocene (0 - 2.588 Ma)

Description: mostly fine-grainded sand, shells scarce; surface slightly higher than that of surrounding deposits, characterized by numerous pimple mounds and poorly defined relict beach ridges; includes many Recent, locally active sand dunes; probably part of "Ingleside" barrier island system; thickness less than 60 ft.

Comments: Original map source: Stoeser, Douglas B., Shock, Nancy, Green, Gregory N., Dumonceaux, Gayle M., and Heran, William D., 2005, Geologic Map Database of Texas, USGS, DS 170, scale 1:500,000.

Lithology: Major:{sand}

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

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Hawkins, M. E. and C. J. Jirik (1966), Salt domes in Texas, Louisiana, Mississippi, Alabama, and offshore tidelands: a survey, U.S. Bureau of Mines Information Circular 8313.
Halbouty, Michel T. (1979), Salt Domes - Gulf Coast, Gulf Publishing Company, Houston, Texas: 140.
Rocks & Minerals (1991): 66(3): 196-224.
USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10061158 & 10129873.
U.S. Bureau of Mines, Minerals Availability System (MAS) file ID # 0482450002.


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.
 
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