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Allen Dome (Allen Dome prospect), Freeport, Brazoria County, Texas, USAi
Regional Level Types
Allen Dome (Allen Dome prospect)Dome
Freeport- not defined -
Brazoria CountyCounty
TexasState
USACountry

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Latitude & Longitude (WGS84):
28° 56' 16'' North , 95° 31' 35'' West
Latitude & Longitude (decimal):
28.93805,-95.52663
GeoHash:
G#: 9vhhdhp8k
GRN:
N20W60
Type:
Dome
Köppen climate type:
Cfa : Humid subtropical climate
Nearest Settlements:
PlacePopulationDistance
Jones Creek2,074 (2017)7.7km
Brazoria3,071 (2017)12.5km
Lake Jackson27,533 (2017)13.9km
Clute11,444 (2017)15.7km
Freeport12,154 (2017)16.3km
Mindat Locality ID:
274199
Long-form identifier:
mindat:1:2:274199:7
GUID (UUID V4):
0


A salt deposit located 16.4 km (10.2 miles) W of Freeport, along the E side of the San Bernard River, near Churchill Bridge, on private land. Dome discovered in 1924, mineralization discovered in 1927. MRDS database accuracy for this location is not stated.

Mineralization is a salt dome structure (Mineral occurrence model information: Model code: 255; USGS model code: 35a.7 (35ag); Deposit model name: Salt-dome sulfur), hosted in Pliocene-Middle Jurassic Lovann Limestone and salt. The ore body has a depth-to-top of 231.65 meters. The depth to caprock is 760 feet and depth to the salt is 1,324 feet. The salt volume is 0.8 cubic miles to a depth of 10,560 feet. Local rocks include alluvium.

Local geologic structures include a piercement salt dome.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


2 valid minerals.

Rock Types Recorded

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

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Alphabetical List Tree Diagram

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Sulphur1.CC.05S8
Group 3 - Halides
ⓘHalite3.AA.20NaCl

List of minerals for each chemical element

NaSodium
Naⓘ HaliteNaCl
SSulfur
Sⓘ Native SulphurS8
ClChlorine
Clⓘ HaliteNaCl

Other Databases

Link to USGS MRDS:10061149

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate

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

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