Dawson deposit (Mc Dowell; Black Chief), Havasu Palms (Roads End Camp), Whipple District (Monumental District), Whipple Mountains, San Bernardino County, California, USAi
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Latitude & Longitude (WGS84):
34° 23' 23'' North , 114° 15' 44'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Lake Havasu City | 53,553 (2017) | 11.8km |
| Parker Strip | 662 (2011) | 19.8km |
| Desert Hills | 2,245 (2011) | 20.8km |
| Cienega Springs | 1,798 (2011) | 22.6km |
| Crystal Beach | 279 (2017) | 23.4km |
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 |
|---|---|---|
| Lake Havasu Gem & Mineral Society | Lake Havasu City, Arizona | 12km |
A Mn occurrence located in sec. 32, T4N, R26E, SBM, 1.9 km (1.2 miles) ESE of Havasu Palms, along the western shore of Lake Havasu (Colorado River) (located claim). Discovered in 1917. Owned by J. W. Dawson, California (1974). MRDS database stated accuracy for this location is 1,000 meters.
Mineralization is hosted in Pliocene basalt. The ore body strikes N10E to N10W and dips nearly vertically at a thickness of 0.3 meter. Stringers of Mn oxides fill fissures in a flow of vesicular and amygdaloidal basalt. The basalt strikes E and dips 30S and has a fault (?) contact with granite to the N, and is overlain by brown sandstone to the N. The stringers are generally 1 to 4 inches thick, and all terminate against the granite to the N. The ore is mostly banded psilomelane, with some soft, black oxide, and a dark gray, crystalline oxide. Calcite and hematite are present. Local rocks include Quaternary alluvium and marine deposits.
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Standard Detailed Gallery Strunz Chemical ElementsMineral List
2 valid minerals.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
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Alphabetical List Tree DiagramGallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Hematite | 4.CB.05 | Fe2O3 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| Unclassified | |||
| ⓘ | 'Psilomelane' | - | |
List of minerals for each chemical element
| C | Carbon | |
|---|---|---|
| C | ⓘ Calcite | CaCO3 |
| O | Oxygen | |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Hematite | Fe2O3 |
| Ca | Calcium | |
| Ca | ⓘ Calcite | CaCO3 |
| Fe | Iron | |
| Fe | ⓘ Hematite | Fe2O3 |
Other Databases
| Link to USGS MRDS: | 10095185 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Basin and Range BasinsBasin
- Mojave DomainDomain
- Southern Basin and RangeWide Rift
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