Allen Dome (Allen Dome prospect), Freeport, Brazoria County, Texas, USAi
| Regional Level Types | |
|---|---|
| Allen Dome (Allen Dome prospect) | Dome |
| Freeport | - not defined - |
| Brazoria County | County |
| Texas | State |
| USA | Country |
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Latitude & Longitude (WGS84):
28° 56' 16'' North , 95° 31' 35'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Jones Creek | 2,074 (2017) | 7.7km |
| Brazoria | 3,071 (2017) | 12.5km |
| Lake Jackson | 27,533 (2017) | 13.9km |
| Clute | 11,444 (2017) | 15.7km |
| Freeport | 12,154 (2017) | 16.3km |
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 ElementsMineral List
2 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:
| ⓘ Halite Formula: NaCl |
| ⓘ Native Sulphur Formula: S8 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Sulphur | 1.CC.05 | S8 |
| Group 3 - Halides | |||
| ⓘ | Halite | 3.AA.20 | NaCl |
List of minerals for each chemical element
| Na | Sodium | |
|---|---|---|
| Na | ⓘ Halite | NaCl |
| S | Sulfur | |
| S | ⓘ Native Sulphur | S8 |
| Cl | Chlorine | |
| Cl | ⓘ Halite | NaCl |
Other Databases
| Link to USGS MRDS: | 10061149 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Gulf of Mexico BasinBasin
- Northern Gulf of Mexico MarginPassive Margin
- Sabine DomainDomain
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