Hillcrest Mine-North (Adams Brothers Company et al), Cuyuna North Range, Crow Wing County, Minnesota, USAi
| Regional Level Types | |
|---|---|
| Hillcrest Mine-North (Adams Brothers Company et al) | Mine (Abandoned) |
| Cuyuna North Range | Mountain Range |
| Crow Wing County | County |
| Minnesota | State |
| USA | Country |
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Latitude & Longitude (WGS84):
46° 29' 8'' North , 94° 0' 6'' West
Latitude & Longitude (decimal):
Type:
Mine (Abandoned) - last checked 2023
Deposit first discovered:
1915
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 |
The Hillcrest Mine (NE SE Section 9 T46N R29W) was began by the Adams Brothers Company in 1915 as an open pit strip mine. It worked lenticular manganese-rich bodies within the complexly folded cherty oolitic banded iron formation of the Proterozoic Trommald Formation. In 1964 the pit was acquired by the Hanna Coal and Ore Company. The ore at that time was mostly hematite. Aegirine (acmite), magnetite, and siderite are also reported from the mine.
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Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
5 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 DiagramDetailed Mineral List:
| ⓘ Aegirine Formula: NaFe3+Si2O6 |
| ⓘ Hematite Formula: Fe2O3 |
| ⓘ Magnetite Formula: Fe2+Fe3+2O4 |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Siderite Formula: FeCO3 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| ⓘ | Hematite | 4.CB.05 | Fe2O3 |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Siderite | 5.AB.05 | FeCO3 |
| Group 9 - Silicates | |||
| ⓘ | Aegirine | 9.DA.25 | NaFe3+Si2O6 |
List of minerals for each chemical element
| C | Carbon | |
|---|---|---|
| C | ⓘ Siderite | FeCO3 |
| O | Oxygen | |
| O | ⓘ Aegirine | NaFe3+Si2O6 |
| O | ⓘ Hematite | Fe2O3 |
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Siderite | FeCO3 |
| Na | Sodium | |
| Na | ⓘ Aegirine | NaFe3+Si2O6 |
| Si | Silicon | |
| Si | ⓘ Aegirine | NaFe3+Si2O6 |
| Si | ⓘ Quartz | SiO2 |
| Fe | Iron | |
| Fe | ⓘ Aegirine | NaFe3+Si2O6 |
| Fe | ⓘ Hematite | Fe2O3 |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
| Fe | ⓘ Siderite | FeCO3 |
Other Databases
| Link to USGS MRDS: | 10105861 |
|---|
Other Regions, Features and Areas containing this locality
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