Maroco Mine, Ironton, Cuyuna North Range, Crow Wing County, Minnesota, USAi
| Regional Level Types | |
|---|---|
| Maroco Mine | Mine (Flooded) |
| Ironton | City |
| Cuyuna North Range | Mountain Range |
| Crow Wing County | County |
| Minnesota | State |
| USA | Country |
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Latitude & Longitude (WGS84):
46° 30' 3'' North , 94° 0' 45'' West
Latitude & Longitude (decimal):
Type:
Mine (Flooded) - last checked 2023
Deposit first discovered:
1918
Köppen climate type:
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
Local clubs are the best way to get access to collecting localities
| Club | Location | Distance |
|---|---|---|
| Cuyuna Rock, Gem and Mineral Society | Brainerd, Minnesota | 21km |
Other/historical names associated with this locality:
Adbar Mine
The Maroco Mine (Secs 4 & 5 T46N R29W) began in 1918 as an underground working called the Adbar Underground Mine. It was soon converted to an open pit strip mine by Marquette Ore Company (MAROCO) and ore began shipping in 1921. It was eventually taken over by the Hanna Coal and Ore Corporation. It became one of the largest producers on the North Cuyuna Range, producing over 3.5 million tons of ore. The ore worked was primarily the thick-bedded chert facies of the Proterozoic Trommald Formation. The open pit displayed excellent exposures of complex faulted drag folds on the limb of a major syncline. Ore was primarily secondarily enriched hematite and goethite with local rich pockets of manganese minerals. Secondary manganese mineralization continued along fractures into the underlying quartzite. As of 2023 the pit is flooded and much of the property is owned by the Minnesota DNR. Literature from the DNR erroneously refers to this as the Morocco Mine.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
6 valid minerals.
Rock Types Recorded
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Cryptomelane Formula: K(Mn4+7Mn3+)O16 References: |
| ⓘ Goethite Formula: Fe3+O(OH) References: |
| ⓘ Hematite Formula: Fe2O3 |
| ⓘ Magnetite Formula: Fe2+Fe3+2O4 |
| ⓘ Pyrolusite Formula: Mn4+O2 |
| ⓘ Quartz Formula: SiO2 References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Goethite | 4.00. | Fe3+O(OH) |
| ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| ⓘ | Hematite | 4.CB.05 | Fe2O3 |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| ⓘ | Pyrolusite | 4.DB.05 | Mn4+O2 |
| ⓘ | Cryptomelane | 4.DK.05a | K(Mn4+7Mn3+)O16 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Goethite | Fe3+O(OH) |
| O | Oxygen | |
| O | ⓘ Cryptomelane | K(Mn74+Mn3+)O16 |
| O | ⓘ Goethite | Fe3+O(OH) |
| O | ⓘ Hematite | Fe2O3 |
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| O | ⓘ Pyrolusite | Mn4+O2 |
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| K | Potassium | |
| K | ⓘ Cryptomelane | K(Mn74+Mn3+)O16 |
| Mn | Manganese | |
| Mn | ⓘ Cryptomelane | K(Mn74+Mn3+)O16 |
| Mn | ⓘ Pyrolusite | Mn4+O2 |
| Fe | Iron | |
| Fe | ⓘ Goethite | Fe3+O(OH) |
| Fe | ⓘ Hematite | Fe2O3 |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
Other Databases
| GeoNames ID: | 5036707 |
|---|
Other Regions, Features and Areas containing this locality
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Maroco Mine, Ironton, Cuyuna North Range, Crow Wing County, Minnesota, USA