Stephens Mine, Fidalgo Island, Skagit County, Washington, USAi
| Regional Level Types | |
|---|---|
| Stephens Mine | Mine |
| Fidalgo Island | Island |
| Skagit County | County |
| Washington | State |
| USA | Country |
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Latitude & Longitude (WGS84):
48° 29' 52'' North , 122° 38' 48'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Anacortes | 16,403 (2017) | 3.0km |
| Bay View | 696 (2011) | 12.5km |
| La Conner | 927 (2017) | 16.5km |
| Edison | 133 (2011) | 16.6km |
| Ault Field | 1,541 (2011) | 17.9km |
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 |
|---|---|---|
| North Puget Sound Facetors Guild | Mount Vernon, Washington | 25km |
| Skagit Rock and Gem Club | Mt. Vernon, Washington | 25km |
| Mount Baker Rock And Gem Club | Bellingham, Washington | 31km |
Other/historical names associated with this locality:
Fidalgo Mine
A copper-silver-gold mine located inside the Anacortes City Limits, about 1 mile East of the airport, by Cranberry Lake. It worked a weakly mineralized and serpentinized zone 10' wide and exposed for 600' in granodiorite. It produced 1 shipment of ore that was sent to the ASARCO smelter in Tacoma. Development includes 5 shallow shafts and an open cut.
Structure: Shear Zone
Tectonics: Active Margin (Leading Edge North American Plate); Accreted Terrane
Deposit: Shear zone in granodiorite is serpentinized and weakly mineralized
Deposit type: Polymetallic veins
Geology: Fidalgo complex is an accreted ophiolite terrane. Granodiorite may be part of complex or part of a later magmatic event. Relation to ore is not known
Ore(s): Shear Zone
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
3 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:
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ 'Chlorite Group' |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Quartz Formula: SiO2 |
| ⓘ 'Serpentine Subgroup' Formula: D3[Si2O5](OH)4 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Unclassified | |||
| ⓘ | 'Chlorite Group' | - | |
| ⓘ | 'Serpentine Subgroup' | - | D3[Si2O5](OH)4 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| O | Oxygen | |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| S | Sulfur | |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Pyrite | FeS2 |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
Other Databases
| Link to USGS MRDS: | 10088856 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Bellingham basinBasin
- Franciscan DomainDomain
- Pacific Coast RangesAccretionary Complex
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