Black Diamond Mine group, Hidden Valley, U.S. Army Yuma Proving Grounds, Trigo Mountains Mining District (Cibola Mining District), La Paz County, Arizona, USAi
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Latitude & Longitude (WGS84):
33° 14' 45'' North , 114° 35' 24'' West
Latitude & Longitude (decimal):
Type:
Group of Mines
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Cibola | 250 (2011) | 10.5km |
| Palo Verde | 171 (2011) | 24.6km |
| Ripley | 692 (2011) | 31.6km |
| Ehrenberg | 1,470 (2011) | 40.2km |
| Blythe | 19,208 (2017) | 40.5km |
Other/historical names associated with this locality:
Myrtle Mine
A former surface and underground Mn-Pb-Zn mine located in East-central (center E½E½) sec. 29, T2S, R22W (protracted), on a military reservation. Owned at times, or in part, by Gibson; Todd & Smith; J.P. Stewart & Associated; Todd & Allen. The Western Exploration & Development Co. had unspecified involvement here (1959). NOTE: Alternate coordinates provided: 33.2233N, 114.5428W.
Mineralization is pyrolusite and psilomelane, mixed with calcite and brecciated rock, in lenticular shoots along an extensively brecciated shear zone in Tertiary andesitic porphyry. Trace amounts of lead and zinc.
Workings include an open cut, shaft and adit operations. Worked from 1953 through 1959, producing some 4,600 long tons of 40%+ Mn and 9,000 long tons of about 30% Mn.
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
2 valid minerals.
Detailed Mineral List:
| ⓘ Calcite Formula: CaCO3 |
| ⓘ 'Psilomelane' |
| ⓘ Pyrolusite Formula: Mn4+O2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Pyrolusite | 4.DB.05 | Mn4+O2 |
| 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 | ⓘ Pyrolusite | Mn4+O2 |
| Ca | Calcium | |
| Ca | ⓘ Calcite | CaCO3 |
| Mn | Manganese | |
| Mn | ⓘ Pyrolusite | Mn4+O2 |
Other Databases
| GeoNames ID: | 5285199 |
|---|---|
| Link to USGS MRDS: | 10161672 |
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Sonoran DesertDesert
North America PlateTectonic Plate
- Basin and Range BasinsBasin
- Mojave DomainDomain
- Southern Basin and RangeWide Rift
USA
- Arizona
- La Paz County
- Trigo MountainsMountain Range
- La Paz County
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