Rock Fence Mine, Southwest Arkansas Mercury Mining District, Howard County, Arkansas, USAi
| Regional Level Types | |
|---|---|
| Rock Fence Mine | Mine |
| Southwest Arkansas Mercury Mining District | Mining District |
| Howard County | County |
| Arkansas | State |
| USA | Country |
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Latitude & Longitude (WGS84):
34° 8' 56'' North , 93° 49' 58'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Daisy | 110 (2017) | 12.9km |
| Murfreesboro | 1,580 (2017) | 16.3km |
| Dierks | 1,092 (2017) | 17.2km |
| Kirby | 786 (2017) | 20.9km |
| Nashville | 4,479 (2017) | 22.7km |
A mercury mine located 2 miles South of, & ½ mile West of the Pike Co. line, in Howard Co. Started & worked in the period 1932-1933. Explored further in the late 1960's. Ore is fracture fillings in Gap Ridge Sandstone. Workings feature pits, trenches & shallow shafts.
Structure: Thrust Faults, N-S Tear Faults, And Two Fold Systems ; Reg.Trends: Thrust Faults From S In Late Paleozoic
Alteration: Sandstone Is Locally Silicified.
Deposit: Cinnabar is disseminated in sandstone and concentrated along fault planes.
Geology: Geol.desc: sandstone beds range from 6 in to 24 in thickness. Thin shale interbeds. Strike N 70 e, dip 90. Walls of stope are slickensided. Sandstone is locally brecciated.
Rock formation(s): Gap Ridge Sandstone Member, Sandstone
Ore(s): Faults In Sandstone And Sharp Folds
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
7 valid minerals.
Detailed Mineral List:
| ⓘ Baryte Formula: BaSO4 References: |
| ⓘ Cinnabar Formula: HgS References: |
| ⓘ Dickite Formula: Al2(Si2O5)(OH)4 References: |
| ⓘ Goethite Formula: Fe3+O(OH) References: |
| ⓘ Metacinnabar Formula: HgS References: |
| ⓘ Quartz Formula: SiO2 References: |
| ⓘ Siderite Formula: FeCO3 References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Metacinnabar | 2.CB.05a | HgS |
| ⓘ | Cinnabar | 2.CD.15a | HgS |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Goethite | 4.00. | Fe3+O(OH) |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Siderite | 5.AB.05 | FeCO3 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Baryte | 7.AD.35 | BaSO4 |
| Group 9 - Silicates | |||
| ⓘ | Dickite | 9.ED.05 | Al2(Si2O5)(OH)4 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Dickite | Al2(Si2O5)(OH)4 |
| H | ⓘ Goethite | Fe3+O(OH) |
| C | Carbon | |
| C | ⓘ Siderite | FeCO3 |
| O | Oxygen | |
| O | ⓘ Baryte | BaSO4 |
| O | ⓘ Dickite | Al2(Si2O5)(OH)4 |
| O | ⓘ Goethite | Fe3+O(OH) |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Siderite | FeCO3 |
| Al | Aluminium | |
| Al | ⓘ Dickite | Al2(Si2O5)(OH)4 |
| Si | Silicon | |
| Si | ⓘ Dickite | Al2(Si2O5)(OH)4 |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Baryte | BaSO4 |
| S | ⓘ Cinnabar | HgS |
| S | ⓘ Metacinnabar | HgS |
| Fe | Iron | |
| Fe | ⓘ Goethite | Fe3+O(OH) |
| Fe | ⓘ Siderite | FeCO3 |
| Ba | Barium | |
| Ba | ⓘ Baryte | BaSO4 |
| Hg | Mercury | |
| Hg | ⓘ Cinnabar | HgS |
| Hg | ⓘ Metacinnabar | HgS |
Other Databases
| Link to USGS MRDS: | 10040367 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Arkoma Basin–Ouachita Thrust BeltBasin
- Sabine DomainDomain
- Sabine TerraneVolcanic Arc
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