Swede Mine (Swede Mine and Clark prospect; Old Swede Mine; Cole Tungsten prospect; Cole Tungsten group), Powers Gulch area, Top of the World, Summit Mining District, Pinal County, Arizona, USAi
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Latitude & Longitude (WGS84):
33° 21' 39'' North , 110° 59' 30'' West
Latitude & Longitude (decimal):
Type:
KΓΆppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Top-of-the-World | 231 (2011) | 1.3km |
| Miami | 1,783 (2017) | 12.2km |
| Superior | 2,943 (2017) | 12.2km |
| Claypool | 1,538 (2011) | 14.9km |
| Central Heights-Midland City | 2,534 (2011) | 17.0km |
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 | 12km |
Mindat Locality ID:
56546
Long-form identifier:
mindat:1:2:56546:7
GUID (UUID V4):
2e802057-71c0-4beb-be20-d469af89c7d9
A former underground W-Cu mine located on 2 unpatented lode claims in the NEΒΌ sec. 12, T1S, R13E, on the SE side of Powers Gulch near its head, 1 mile north of the Pinal Ranch, and about ΒΎ mile W of Top of the World, and about 10 miles NE of Superior. Owned by Ms Helen Marie Cole.
Mineralization is the Swede vein that traverses an irregular tongue of schist that probably is a pendant projecting into the granite at the western edge of the stock. The vein was deposited along a shear zone which, at least in some segments, is slightly discordant with the bedding of the schist. Along most of its extent the zone is a poorly defined stockwork of thin, discontinuous quartz-pyrite veinlets. Replacement by vein matter is most complete along a segment in which the shear zone is intersected by two narrow dikes that are offshoots of the main granite mass. This segment contains a small oreshoot. Most of the wolframite is S of the fault and is confined to a 10 inch streak on the hanging wall at surface and on the footwall in the crosscut. Ore control was the shear zone intersection with the granite porphyry dikes.
The remaining part of the mineralized zone that is exposed in the drifts and at the edges of the stope has a central core of massive white quartz flanked by zones of coarse greisen as much as 18 inches (45 cm) wide. The minerals are scattered randomly in this quartz.
Local structures include the NE shear zone, fault displacing the vein 20 feet.
The similarity of the greisen to that formed by alteration of granite and the sharp contact between the greisen and the schist wallrock suggest that the segment of the vein containing the oreshoot was formed by replacement of granite porphyry intruded along this part of the shear zone by way of the previously mentioned dikes.
Workings include an adit crosscut and drifts; small open cuts, pits, and prospect holes. Production is limited to a few tons of tungsten concentrates from ore mined in a stope between the adit and the surface.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| β Chalcopyrite Formula: CuFeS2 Description: A little is present. |
| β Ferrimolybdite Formula: Fe2(MoO4)3 · nH2O Description: Occurs in a large quartz vein. |
| β Galena Formula: PbS References: |
| β Hematite Formula: Fe2O3 Description: Small masses in narrow quartz veins. |
| β Jarosite Formula: KFe3+3(SO4)2(OH)6 References: |
| β 'Limonite' References: |
| β Molybdenite Formula: MoS2 Description: Rounded clots and thin seams. |
| β Pyrite Formula: FeS2 Description: Masses of coarse, granular material. |
| β Quartz Formula: SiO2 |
| β Quartz var. Milky Quartz Formula: SiO2 |
| β Scheelite Formula: Ca(WO4) Description: Product of alteration of wolframite. |
| β Sphalerite Formula: ZnS References: |
| β 'Tourmaline' Formula: AD3G6 (T6O18)(BO3)3X3Z Habit: Prismatic Colour: Black |
| β 'Wolframite Group' Habit: Platy Description: Partly altered to scheelite. |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| β | Sphalerite | 2.CB.05a | ZnS |
| β | Chalcopyrite | 2.CB.10a | CuFeS2 |
| β | Galena | 2.CD.10 | PbS |
| β | Molybdenite | 2.EA.30 | MoS2 |
| β | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| β | Hematite | 4.CB.05 | Fe2O3 |
| β | Quartz | 4.DA.05 | SiO2 |
| β | var. Milky Quartz | 4.DA.05 | SiO2 |
| β | 'Wolframite Group' | 4.DB.30 va | |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| β | Jarosite | 7.BC.10 | KFe3+3(SO4)2(OH)6 |
| β | Scheelite | 7.GA.05 | Ca(WO4) |
| β | Ferrimolybdite | 7.GB.30 | Fe2(MoO4)3 Β· nH2O |
| Unclassified | |||
| β | 'Limonite' | - | |
| β | 'Tourmaline' | - | AD3G6 (T6O18)(BO3)3X3Z |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | β Ferrimolybdite | Fe2(MoO4)3 · nH2O |
| H | β Jarosite | KFe33+(SO4)2(OH)6 |
| B | Boron | |
| B | β Tourmaline | AD3G6 (T6O18)(BO3)3X3Z |
| O | Oxygen | |
| O | β Ferrimolybdite | Fe2(MoO4)3 · nH2O |
| O | β Hematite | Fe2O3 |
| O | β Jarosite | KFe33+(SO4)2(OH)6 |
| O | β Quartz | SiO2 |
| O | β Scheelite | Ca(WO4) |
| O | β Tourmaline | AD3G6 (T6O18)(BO3)3X3Z |
| O | β Quartz var. Milky Quartz | SiO2 |
| Si | Silicon | |
| Si | β Quartz | SiO2 |
| Si | β Quartz var. Milky Quartz | SiO2 |
| S | Sulfur | |
| S | β Chalcopyrite | CuFeS2 |
| S | β Galena | PbS |
| S | β Jarosite | KFe33+(SO4)2(OH)6 |
| S | β Molybdenite | MoS2 |
| S | β Pyrite | FeS2 |
| S | β Sphalerite | ZnS |
| K | Potassium | |
| K | β Jarosite | KFe33+(SO4)2(OH)6 |
| Ca | Calcium | |
| Ca | β Scheelite | Ca(WO4) |
| Fe | Iron | |
| Fe | β Chalcopyrite | CuFeS2 |
| Fe | β Ferrimolybdite | Fe2(MoO4)3 · nH2O |
| Fe | β Hematite | Fe2O3 |
| Fe | β Jarosite | KFe33+(SO4)2(OH)6 |
| Fe | β Pyrite | FeS2 |
| Cu | Copper | |
| Cu | β Chalcopyrite | CuFeS2 |
| Zn | Zinc | |
| Zn | β Sphalerite | ZnS |
| Mo | Molybdenum | |
| Mo | β Ferrimolybdite | Fe2(MoO4)3 · nH2O |
| Mo | β Molybdenite | MoS2 |
| W | Tungsten | |
| W | β Scheelite | Ca(WO4) |
| Pb | Lead | |
| Pb | β Galena | PbS |
Other Databases
| Link to USGS MRDS: | 10026870 |
|---|
Other Regions, Features and Areas containing this locality
North America
- Sonoran DesertDesert
North America PlateTectonic Plate
- Basin and Range BasinsBasin
- Mazatzal DomainDomain
USA
- Arizona
- Tonto National ForestForest
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References
