Pico Mine, Stoddard County, Missouri, USAi
| Regional Level Types | |
|---|---|
| Pico Mine | Mine |
| Stoddard County | County |
| Missouri | State |
| USA | Country |
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Latitude & Longitude (WGS84):
36° 57' 41'' North , 90° 9' 19'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Puxico | 871 (2017) | 1.3km |
| Dudley | 232 (2017) | 20.0km |
| Fisk | 339 (2017) | 20.5km |
| Bloomfield | 1,903 (2017) | 21.8km |
| Dexter | 7,992 (2017) | 25.5km |
This mine, located about one mile north of Puxico, is situated on the southeast slope of an outlying Cambrian foot-hill, which is surrounded by the southeast low-lands. The crest and upper slopes of the hill bear a strong outcrop of cherty brown ore which covers an area of several acres.
The mine consists of a series of openings extending for a distance of 300 yards along the line of the outcrop. The largest opening is about 200 feet long by 100 feet wide, and has been sunk in ore to a depth of 50 feet.
Developments show that the hill consists of roughly stratified, cherty, residual clay overlying a core of cherty dolomite of Upper Cambrian age (probably Jefferson City). The stratification of the residuum is shown by more or less continuous layers of unaltered and partly decomposed chert embedded in it at certain horizons.
The ore occurs in irregular pockets in the residual materials and at ore point, as shown by present developments, extends to the limestone underneath. It consists of dense to porous primary limonite, many of the cavities containing clay and sand. Unreplaced chert occurs throughout the deposit, especially in the larger boulders or masses. Some of the ore has a mottled appearance due to enclosed fragments of chert and is known locally as "peanut candy" ore. Many of the boulders have a concretionary structure and, when broken open, are found to contain a light colored silicious clay. In some instances they are filled with water and are lined with goethite.
This property is connected with the St. Louis and San Francisco R'y. It was opened and operated by Mr. T. J. St. Louis in 1908 and 1909, during which time about 2,100 tons of ore were mined. The present operators took possession Dec. 7th, 1909, and, during 1910, mined and shipped 10,011 tons of ore.
Only one side of the hill, showing the outcrop, has been developed and the property is no doubt capable of producing a large tonnage in the future.
The mine consists of a series of openings extending for a distance of 300 yards along the line of the outcrop. The largest opening is about 200 feet long by 100 feet wide, and has been sunk in ore to a depth of 50 feet.
Developments show that the hill consists of roughly stratified, cherty, residual clay overlying a core of cherty dolomite of Upper Cambrian age (probably Jefferson City). The stratification of the residuum is shown by more or less continuous layers of unaltered and partly decomposed chert embedded in it at certain horizons.
The ore occurs in irregular pockets in the residual materials and at ore point, as shown by present developments, extends to the limestone underneath. It consists of dense to porous primary limonite, many of the cavities containing clay and sand. Unreplaced chert occurs throughout the deposit, especially in the larger boulders or masses. Some of the ore has a mottled appearance due to enclosed fragments of chert and is known locally as "peanut candy" ore. Many of the boulders have a concretionary structure and, when broken open, are found to contain a light colored silicious clay. In some instances they are filled with water and are lined with goethite.
This property is connected with the St. Louis and San Francisco R'y. It was opened and operated by Mr. T. J. St. Louis in 1908 and 1909, during which time about 2,100 tons of ore were mined. The present operators took possession Dec. 7th, 1909, and, during 1910, mined and shipped 10,011 tons of ore.
Only one side of the hill, showing the outcrop, has been developed and the property is no doubt capable of producing a large tonnage in the future.
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
1 valid mineral.
Detailed Mineral List:
| ⓘ Goethite Formula: Fe3+O(OH) |
| ⓘ 'Limonite' |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Goethite | 4.00. | Fe3+O(OH) |
| Unclassified | |||
| ⓘ | 'Limonite' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Goethite | Fe3+O(OH) |
| O | Oxygen | |
| O | ⓘ Goethite | Fe3+O(OH) |
| Fe | Iron | |
| Fe | ⓘ Goethite | Fe3+O(OH) |
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Granite-Rhyolite ProvinceMagmatic Province
- Shawnee DomainDomain
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