Magmatic Copper Mine (Magmatic Copper Company claims; Stacy claims; Lode Star claims), Apache Leap, Superior, Pinal County, Arizona, USAi
| Regional Level Types | |
|---|---|
| Magmatic Copper Mine (Magmatic Copper Company claims; Stacy claims; Lode Star claims) | Mine |
| Apache Leap | Cliff |
| Superior | Town |
| Pinal County | County |
| Arizona | State |
| USA | Country |
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Latitude & Longitude (WGS84):
33° 15' 20'' North , 111° 5' 21'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Superior | 2,943 (2017) | 4.3km |
| Top-of-the-World | 231 (2011) | 13.8km |
| Queen Valley | 788 (2011) | 19.2km |
| Gold Camp | 10,159 (2011) | 20.4km |
| Miami | 1,783 (2017) | 26.0km |
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 |
|---|---|---|
| Gila County Gem & Mineral Society | Miami, Arizona | 26km |
| Apache Junction Rock and Gem Club | Apache Junction, Arizona | 46km |
A group of 7 Mn-Au-Ag-Fe claims located in sec. 14, T2S, R12E, in the low-lying hills at the base of the westerly slope of Apache Leap (W of highway 177 [Superior-Ray Road]), about 2 miles South of Superior, at 3,000 feet of altitude. Owned by the Magmatic Copper Co. (1930). The claims extend into secs. 11 & 15.
Rocks exposed are quartzite, limestone, diabase and dacite. The quartzite forms the base of the series, and it is overlain by several hundred feet of massive limestone. A large mass of diabase is intruded into the limestone on the East sideof the claim group. South of the working shaft, between 2 faults, is an area of dacite identical with the rock forming the drest of Apache Leap. The sedimentary rocks strike about North and dip 35ºE. A prominant Northward-trending fault can be traced for several thousand feet on the claims. It cuts the limestone and South of the shaft, brings dacite into contact with the limestone.
Mineralization is manganese deposits that occur in the fault fissures or along bedding planes of Escabrosa Limestone adjacent to the faults. Lenses of manganous iron ore a few feet long occur along the faults, associated with silicified limestone and jasper. They dip 40W and are 3.05 meters thick.
Material from the working shaft is granular and dark brown and crumbles to a powder on exposure to air. Fresh pieces show specks and narrow seams of manganese oxides in the predominantly reddish-brown iron oxides. Many pieces show partly decomposed, coarse crystals of a brownish spar which may be manganous siderite.
Area structures include a minor N-S fault at the south end of the Concentrator Fault System; N-S-trending fault systems; N-S-trending sediments with a E dip; and various E-W-trending faults.
Workings include a 130 foot deep shaft and several older shafts at 50, 80 & 100 feet deep, respectively, and a 100 foot long tunnel.
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
4 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:
| ⓘ Calcite Formula: CaCO3 |
| ⓘ 'Limonite' |
| ⓘ Pyrolusite Formula: Mn4+O2 |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Siderite Formula: FeCO3 |
| ⓘ 'Wad' |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| ⓘ | Pyrolusite | 4.DB.05 | Mn4+O2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| ⓘ | Siderite | 5.AB.05 | FeCO3 |
| Unclassified | |||
| ⓘ | 'Limonite' | - | |
| ⓘ | 'Wad' | - | |
List of minerals for each chemical element
| C | Carbon | |
|---|---|---|
| C | ⓘ Calcite | CaCO3 |
| C | ⓘ Siderite | FeCO3 |
| O | Oxygen | |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Pyrolusite | Mn4+O2 |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Siderite | FeCO3 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| Ca | Calcium | |
| Ca | ⓘ Calcite | CaCO3 |
| Mn | Manganese | |
| Mn | ⓘ Pyrolusite | Mn4+O2 |
| Fe | Iron | |
| Fe | ⓘ Siderite | FeCO3 |
Other Databases
| Link to USGS MRDS: | 10092689 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Sonoran DesertDesert
North America PlateTectonic Plate
- Basin and Range BasinsBasin
- Mazatzal DomainDomain
- Southern Basin and RangeWide Rift
USA
- Arizona
- Pinal County
- Pioneer Mining District (Superior Mining District)Mining District
- Tonto National ForestForest
- Pinal County
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