Arizona Manganese prospect, Lake Havasu City, Mohave County, Arizona, USAi
| Regional Level Types | |
|---|---|
| Arizona Manganese prospect | Group of Prospects |
| Lake Havasu City | City |
| Mohave County | County |
| Arizona | State |
| USA | Country |
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Latitude & Longitude (WGS84):
34° 27' 14'' North , 114° 19' 48'' West
Latitude & Longitude (decimal):
Type:
Group of Prospects
KΓΆppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Lake Havasu City | 53,553 (2017) | 3.4km |
| Desert Hills | 2,245 (2011) | 11.8km |
| Crystal Beach | 279 (2017) | 14.2km |
| Parker Strip | 662 (2011) | 28.7km |
| Cienega Springs | 1,798 (2011) | 31.0km |
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 | 3km |
Mindat Locality ID:
34399
Long-form identifier:
mindat:1:2:34399:9
GUID (UUID V4):
1334cb06-5e73-4e42-8f82-6469115678e4
Other/historical names associated with this locality:
Arizona Manganese claims; Arizona Manganese group of claims
A Mn-Fe occurrence/group of 11 claims located in sec. 23, T13N, R20W, G&SRM, 3.4 km (2.1 miles) SSW of Lake Havasu City center, on state park land. Located by George Howard. In 1917 E.C. Humphreys obtained an option and started mining. NOTE: The USGS MRDS database presents MRDS file #10137710 as a related file; however, the coordinates presented in that file indicate that this is another Mn locality.
The rocks of the local small hills consist of an older series of gneiss, diorite, and granitic rocks of Precambrian age, and a younger series of basalt and sandstone of Quaternary or late Tertiary age. Near the manganese deposit the basalt is seemingly intruded into the sandstone. The basalt is decomposed and the abundant amygdules are filled with black calcite that is manganiferous.
Mineralization is a Mn deposit hosted in the diorite, gneiss and granite. The ore body strikes NW and dips NE at ba width of 1.52 meters. Controls for ore emplacement included breccia and fissure fillings. The hard ores give way to soft manganese oxides at shallow depths. Several veins and brecciated zones cut the basalt or lie on the contact of basalt and sandstone. Most of these veins lie in a zone which trends WNW and dips steeply NE. One vein was observed which strikes a little East of North and dips SE. Ore occurs as small shoots in the fissures. The veins and brecciated zones range from a few inches (a few centimeters) to 5 feet (1.5 meters) wide. The manganese oxides are psilomelane and pyrolusite. Calcite is abundant everywhere in these deposits. Associated rocks include Pliocene-Neoproterozoic sandstone. Local rocks include Quaternary surficial deposits, undivided.
Workings include surface openings comprised of 10 or more open cuts with an overall length of 152.4 meters. The 10 open cuts range from 20 to 80 feet long and up to 10 feet deep.
Production was about 150 tons of ore prior to 1918.
Analytical data results: Ore was judged to contain 35% Mn, 8% Fe.
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.
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:
| β Calcite Formula: CaCO3 Colour: White to brown to black. Description: Everywhere abundant & forms well-defined veins; coarse xls. in a layer 1 foot thick. |
| β 'Psilomelane' Description: Occurs near-surface as concentric crusts about basalt fragments. |
| β Pyrolusite Formula: Mn4+O2 Description: In veins & shear zones with wad. |
| β 'Wad' |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| β | Pyrolusite | 4.DB.05 | Mn4+O2 |
| Group 5 - Nitrates and Carbonates | |||
| β | Calcite | 5.AB.05 | CaCO3 |
| Unclassified | |||
| β | 'Psilomelane' | - | |
| β | 'Wad' | - | |
List of minerals for each chemical element
| C | Carbon | |
|---|---|---|
| C | β Calcite | CaCO3 |
| O | Oxygen | |
| O | β Calcite | CaCO3 |
| O | β Pyrolusite | Mn4+O2 |
| Ca | Calcium | |
| Ca | β Calcite | CaCO3 |
| Mn | Manganese | |
| Mn | β Pyrolusite | Mn4+O2 |
Other Databases
| Link to USGS MRDS: | 10027897 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Basin and Range BasinsBasin
- Mojave DomainDomain
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References
