Mammoth Mine, Slate Creek Mining District, Whatcom County, Washington, USAi
| Regional Level Types | |
|---|---|
| Mammoth Mine | Mine |
| Slate Creek Mining District | Mining District |
| Whatcom County | County |
| Washington | State |
| USA | Country |
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Latitude & Longitude (WGS84):
48° 45' 11'' North , 120° 42' 48'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
The Mammoth was located on the east side of Bonita Creek. The ore occurred as a fissure vein in quartzite, slate, and arkose of the Early Cretaceous Harts Pass Formation. Development consisted of three adits containing 2250' of workings and two stamp mills. It was one of the larger producing mines in the county, having about 30,000 tons of ore produced from around the turn of the century and 1936-1942.
Structure: Jur-Cret Fold And Thrust Belt Faults (N45-60w, 40-55ne) Offset Vein As Much As 25 Ft
Alteration: Oxidation
Tectonics: Cascade Volcanic Arc
Commodity: Presence of tellurides indicated in early reports, but this has not been verified
Deposit: Quartz fissure vein ranges from 2-40 in. Thick (averages 20 in.) in upper level, from 1-24 in. Thick in lower level. 5 patented claims. ; info.src : 1 pub lit
Deposit type: Polymetallic veins
Geology: Sedimentary rocks were deposited by turbidity currents
Rock formation(s): Harts Pass Group, Harts Pass Formation;Harts Pass Group, Harts Pass Formation
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
7 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:
| ⓘ Arsenopyrite Formula: FeAsS |
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Galena Formula: PbS |
| ⓘ Native Gold Formula: Au |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Sphalerite Formula: ZnS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | Arsenopyrite | 2.EB.20 | FeAsS |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Arsenopyrite | FeAsS |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Galena | PbS |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Sphalerite | ZnS |
| Fe | Iron | |
| Fe | ⓘ Arsenopyrite | FeAsS |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
| As | Arsenic | |
| As | ⓘ Arsenopyrite | FeAsS |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
Other Databases
| Link to USGS MRDS: | 10047782 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Cascade RangeMountain Range
North America PlateTectonic Plate
- Franciscan DomainDomain
- MethowAccretionary Complex
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Mammoth Mine, Slate Creek Mining District, Whatcom County, Washington, USA