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Breckenridge Creek Mine, Sumas Mountain, Mount Baker Mining District, Whatcom County, Washington, USAi
| Regional Level Types | |
|---|---|
| Breckenridge Creek Mine | Claim |
| Sumas Mountain | Mountain |
| Mount Baker Mining District | Mining District |
| Whatcom County | County |
| Washington | State |
| USA | Country |
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Latitude & Longitude (WGS84):
48° 57' 46'' North , 122° 11' 47'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Peaceful Valley | 3,324 (2011) | 4.5km |
| Sumas | 1,373 (2017) | 6.5km |
| Kendall | 191 (2011) | 6.7km |
| Maple Falls | 324 (2011) | 9.7km |
| Nooksack | 1,480 (2017) | 9.9km |
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 |
|---|---|---|
| Abbotsford Rock & Gem Club | Abbotsford, British Columbia | 12km |
| Fraser Valley Rock & Gem Club | Aldergrove, British Columbia | 22km |
| Mount Baker Rock And Gem Club | Bellingham, Washington | 31km |
| Surrey Rockhound Club | Surrey, British Columbia | 37km |
| Maple Ridge Lapidary Club | Maple Ridge, British Columbia | 40km |
Other/historical names associated with this locality:
Sumas Mountain Mine; Stein Mine
A chromium mine on a tributary of Breckenridge Creek. It produced a few tons of ore in 1946. The geology is serpentinized saxonite injected into Chilliwack Group rocks.
Structure: One Joint Set Parallels Chromite Bands, Other Set Includes Offsetting Cross Faults
Tectonics: Accreted Terrane
Deposit: Chromite is concentrated in parallel bands 0.25-2 in. Thick (avg 1 in. Thick), in a fe W places forming lenticular bodies. Largest lens observed was 5 ft long and 4 in. Thick. Massive chromite seen in stockpile indicates some lenses may have been 10 in. Thick. The chromite bands alternate with layers of serpentinite. Most chromite bands terminate against and are offset by small cross faults striking n15w, dipping 50ne. Location and geologic map of deposit given in moen, 1967. ; info.src : 1 pub lit
Deposit type: Podiform chromite (minor)
Geology: Paleozoic graywacke and argillite are associated with the serpentinite
Rock formation(s): Sumas Mountain Serpentine
Structure: One Joint Set Parallels Chromite Bands, Other Set Includes Offsetting Cross Faults
Tectonics: Accreted Terrane
Deposit: Chromite is concentrated in parallel bands 0.25-2 in. Thick (avg 1 in. Thick), in a fe W places forming lenticular bodies. Largest lens observed was 5 ft long and 4 in. Thick. Massive chromite seen in stockpile indicates some lenses may have been 10 in. Thick. The chromite bands alternate with layers of serpentinite. Most chromite bands terminate against and are offset by small cross faults striking n15w, dipping 50ne. Location and geologic map of deposit given in moen, 1967. ; info.src : 1 pub lit
Deposit type: Podiform chromite (minor)
Geology: Paleozoic graywacke and argillite are associated with the serpentinite
Rock formation(s): Sumas Mountain Serpentine
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
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Antigorite Formula: Mg3(Si2O5)(OH)4 |
| ⓘ Chromite Formula: Fe2+Cr3+2O4 |
| ⓘ Chrysotile Formula: Mg3(Si2O5)(OH)4 |
| ⓘ Magnetite Formula: Fe2+Fe3+2O4 |
| ⓘ 'Serpentine Subgroup' Formula: D3[Si2O5](OH)4 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
| ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| Group 9 - Silicates | |||
| ⓘ | Chrysotile | 9.00. | Mg3(Si2O5)(OH)4 |
| ⓘ | Antigorite | 9.ED.15 | Mg3(Si2O5)(OH)4 |
| Unclassified | |||
| ⓘ | 'Serpentine Subgroup' | - | D3[Si2O5](OH)4 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Antigorite | Mg3(Si2O5)(OH)4 |
| H | ⓘ Chrysotile | Mg3(Si2O5)(OH)4 |
| H | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| O | Oxygen | |
| O | ⓘ Antigorite | Mg3(Si2O5)(OH)4 |
| O | ⓘ Chrysotile | Mg3(Si2O5)(OH)4 |
| O | ⓘ Chromite | Fe2+Cr23+O4 |
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| O | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| Mg | Magnesium | |
| Mg | ⓘ Antigorite | Mg3(Si2O5)(OH)4 |
| Mg | ⓘ Chrysotile | Mg3(Si2O5)(OH)4 |
| Si | Silicon | |
| Si | ⓘ Antigorite | Mg3(Si2O5)(OH)4 |
| Si | ⓘ Chrysotile | Mg3(Si2O5)(OH)4 |
| Si | ⓘ Serpentine Subgroup | D3[Si2O5](OH)4 |
| Cr | Chromium | |
| Cr | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | Iron | |
| Fe | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
Other Databases
| Link to USGS MRDS: | 10047742 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Cascade RangeMountain Range
North America PlateTectonic Plate
- ChilliwackVolcanic Arc
- Franciscan DomainDomain
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