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Sumas Mountain Iron Prospect, Sumas Mountain, Mount Baker Mining District, Whatcom County, Washington, USAi
| Regional Level Types | |
|---|---|
| Sumas Mountain Iron Prospect | Prospect |
| Sumas Mountain | Mountain |
| Mount Baker Mining District | Mining District |
| Whatcom County | County |
| Washington | State |
| USA | Country |
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Latitude & Longitude (WGS84):
48° 54' 15'' North , 122° 15' 7'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Nooksack | 1,480 (2017) | 5.7km |
| Everson | 2,600 (2017) | 6.8km |
| Peaceful Valley | 3,324 (2011) | 8.5km |
| Kendall | 191 (2011) | 8.6km |
| Deming | 353 (2011) | 9.1km |
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 | 15km |
| Fraser Valley Rock & Gem Club | Aldergrove, British Columbia | 23km |
| Mount Baker Rock And Gem Club | Bellingham, Washington | 24km |
| Surrey Rockhound Club | Surrey, British Columbia | 35km |
| Maple Ridge Lapidary Club | Maple Ridge, British Columbia | 43km |
Other/historical names associated with this locality:
Sumas Iron Prospect
On the west slope of Sumas Mountain, a lateritic iron deposit occurs. The deposit was formed from the weathering of peridotite and consists of claystones and siltstones. It was developed by a short adit and several small cuts.
Deposit: Laterite developed on peridotite (almost completely serpentinized). Residual olivine, chromite, and magnetite are plainly visible microscopically. Deposit consists of blanket of ferruginous claystone on altered peridotite. Claystone has maximum thickness of 35 ft, but iron-rich part generally averages only 5 ft. Claystone consists of extremely fine grained (clay size) hydrous aluminum silicates, limonite, hematite, magnetite, and minor quartz and chromite. Color varies from grayish brown to grayish red; specific gravity ranges from 2.67 to 3.09. Bedding, visible in upper parts ofunit, marks alternating layers of claystone and siltstone and several sandy beds. Beds strike N 2 E to N 20 w, and dip 25 to 40 w. Iron-rich part of claystone is magnetic and contains magnetite oolites and pisolites, which also fill small fractures in the iron beds. Small chromite grains, probably weathered from the serpentinite are present. Nickel is present in the claystone, but its form is unknown. Absence of sulfides suggests that the nickel may be a hydrous nickel silicate. Claystone underlies a basal conglomerate of the chuckanut formation. Exposures of the claystone As much As 20-ft thick extend about 1,500 ft up side of sumas mountain. Mrds record w017830 has been merged with this record and deleted location and geologic map of deposit, and results of chemical analyses of deposit are available, moen, 1969. Map of claims available, shedd, jenkins, and cooper, 1922. ; info.src : 1 pub lit
Development: Many samples have been taken, some trenches dug, and one adit driven, but no mining has been undertaken
Ore(s): Old Weathering Surface
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:
| ⓘ Chromite Formula: Fe2+Cr3+2O4 |
| ⓘ Hematite Formula: Fe2O3 |
| ⓘ 'Limonite' |
| ⓘ Magnetite Formula: Fe2+Fe3+2O4 |
| ⓘ Quartz Formula: SiO2 |
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 |
| ⓘ | Hematite | 4.CB.05 | Fe2O3 |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Unclassified | |||
| ⓘ | 'Limonite' | - | |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Chromite | Fe2+Cr23+O4 |
| O | ⓘ Hematite | Fe2O3 |
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| Cr | Chromium | |
| Cr | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | Iron | |
| Fe | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | ⓘ Hematite | Fe2O3 |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
Other Databases
| Link to USGS MRDS: | 10047811 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Cascade RangeMountain Range
North America PlateTectonic Plate
- Bellingham basinBasin
- ChilliwackVolcanic Arc
- Franciscan DomainDomain
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