Agnew Meadow Mine (Agnew Meadow Manganese prospect/deposit; Mammoth Lakes), Olaine Lake, Agnew Meadows, Madera County, California, USAi
Regional Level Types | |
---|---|
Agnew Meadow Mine (Agnew Meadow Manganese prospect/deposit; Mammoth Lakes) | Mine |
Olaine Lake | Lake |
Agnew Meadows | - not defined - |
Madera County | County |
California | State |
USA | Country |
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
37° 40' 56'' North , 119° 4' 58'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
Place | Population | Distance |
---|---|---|
Mammoth Lakes | 7,946 (2018) | 10.4km |
June Lake | 629 (2011) | 10.8km |
Lee Vining | 222 (2011) | 30.8km |
Sunny Slopes | 182 (2017) | 38.0km |
Mono City | 172 (2011) | 40.2km |
Mindat Locality ID:
30934
Long-form identifier:
mindat:1:2:30934:8
GUID (UUID V4):
77d75d9b-71ab-40f7-b9ba-be71ac913112
A former Mn-Fe mine located in the SW¼ sec. 15, T3S, R26E, MDM, about 3.0 km (10,000 feet) ESE of Olaine Lake on Agnew Meadows (flat/swamp) (10 miles from Mammoth, in the upper part of the canyon of the Middle Fork San Joaquin River. Lat/Long estimated at culture evidence in Agnew Meadows), on National Forest wilderness land (Ansel Adams Wilderness). Owned by Charles Summers and Dr Henry A. Stevens, California (1974). MRDS database stated accuracy for this location is 1,000 meters.
Mineralization is a replacement deposit. The ore body is 1.83 meters wide and 3.05 meters long. The mineralization is hydrothermal deposits of vein origin at the intersection of the vertical mineralized zones and schist. Mineralized zones strike N40E and are essentially vertical. They are characterized by garnet, some of which is typical skarn, and by pyrite, epidote, rhodonite, rhodochrosite, piedmontite (?) and a green mineral that weathers to a black manganese oxide (johannsenite ?). The rhodonite is in a localized zone, 2 to 3 feet wide, and the rhodochrosite is in a similar zone above the rhodonite. Local rocks include Mesozoic volcanic rocks, unit 3 (Mojave Desert, Death Valley area, and Eastern Sierra Nevada).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
ⓘ Bustamite Formula: CaMn2+(Si2O6) Colour: Pale pink Description: Massive material. |
ⓘ Calcite Formula: CaCO3 |
ⓘ Epidote Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
ⓘ 'Garnet Group' Formula: X3Z2(SiO4)3 |
ⓘ Hematite Formula: Fe2O3 References: |
ⓘ Hematite var. Specularite Formula: Fe2O3 References: |
ⓘ Magnetite Formula: Fe2+Fe3+2O4 |
ⓘ Manganhumite Formula: (Mn2+,Mg)7(SiO4)3(OH)2 |
ⓘ Metamunirite Formula: NaVO3 |
ⓘ Piemontite Formula: (CaCa)(AlAlMn3+)O[Si2O7][SiO4](OH) |
ⓘ Pyrite Formula: FeS2 |
ⓘ Rhodochrosite Formula: MnCO3 References: |
ⓘ Rhodonite Formula: CaMn3Mn[Si5O15] References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 2 - Sulphides and Sulfosalts | |||
---|---|---|---|
ⓘ | Pyrite | 2.EB.05a | FeS2 |
Group 4 - Oxides and Hydroxides | |||
ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
ⓘ | Hematite | 4.CB.05 | Fe2O3 |
ⓘ | var. Specularite | 4.CB.05 | Fe2O3 |
ⓘ | Metamunirite | 4.HD.20 | NaVO3 |
Group 5 - Nitrates and Carbonates | |||
ⓘ | Calcite | 5.AB.05 | CaCO3 |
ⓘ | Rhodochrosite | 5.AB.05 | MnCO3 |
Group 9 - Silicates | |||
ⓘ | Manganhumite | 9.AF.50 | (Mn2+,Mg)7(SiO4)3(OH)2 |
ⓘ | Epidote | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
ⓘ | Piemontite | 9.BG.05a | (CaCa)(AlAlMn3+)O[Si2O7][SiO4](OH) |
ⓘ | Bustamite | 9.DG.05 | CaMn2+(Si2O6) |
ⓘ | Rhodonite | 9.DK.05 | CaMn3Mn[Si5O15] |
Unclassified | |||
ⓘ | 'Garnet Group' | - | X3Z2(SiO4)3 |
List of minerals for each chemical element
H | Hydrogen | |
---|---|---|
H | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
H | ⓘ Manganhumite | (Mn2+,Mg)7(SiO4)3(OH)2 |
H | ⓘ Piemontite | (CaCa)(AlAlMn3+)O[Si2O7][SiO4](OH) |
C | Carbon | |
C | ⓘ Calcite | CaCO3 |
C | ⓘ Rhodochrosite | MnCO3 |
O | Oxygen | |
O | ⓘ Bustamite | CaMn2+(Si2O6) |
O | ⓘ Calcite | CaCO3 |
O | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
O | ⓘ Hematite | Fe2O3 |
O | ⓘ Manganhumite | (Mn2+,Mg)7(SiO4)3(OH)2 |
O | ⓘ Magnetite | Fe2+Fe23+O4 |
O | ⓘ Metamunirite | NaVO3 |
O | ⓘ Piemontite | (CaCa)(AlAlMn3+)O[Si2O7][SiO4](OH) |
O | ⓘ Rhodochrosite | MnCO3 |
O | ⓘ Rhodonite | CaMn3Mn[Si5O15] |
O | ⓘ Hematite var. Specularite | Fe2O3 |
O | ⓘ Garnet Group | X3Z2(SiO4)3 |
Na | Sodium | |
Na | ⓘ Metamunirite | NaVO3 |
Mg | Magnesium | |
Mg | ⓘ Manganhumite | (Mn2+,Mg)7(SiO4)3(OH)2 |
Al | Aluminium | |
Al | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
Al | ⓘ Piemontite | (CaCa)(AlAlMn3+)O[Si2O7][SiO4](OH) |
Si | Silicon | |
Si | ⓘ Bustamite | CaMn2+(Si2O6) |
Si | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
Si | ⓘ Manganhumite | (Mn2+,Mg)7(SiO4)3(OH)2 |
Si | ⓘ Piemontite | (CaCa)(AlAlMn3+)O[Si2O7][SiO4](OH) |
Si | ⓘ Rhodonite | CaMn3Mn[Si5O15] |
Si | ⓘ Garnet Group | X3Z2(SiO4)3 |
S | Sulfur | |
S | ⓘ Pyrite | FeS2 |
Ca | Calcium | |
Ca | ⓘ Bustamite | CaMn2+(Si2O6) |
Ca | ⓘ Calcite | CaCO3 |
Ca | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
Ca | ⓘ Piemontite | (CaCa)(AlAlMn3+)O[Si2O7][SiO4](OH) |
Ca | ⓘ Rhodonite | CaMn3Mn[Si5O15] |
V | Vanadium | |
V | ⓘ Metamunirite | NaVO3 |
Mn | Manganese | |
Mn | ⓘ Bustamite | CaMn2+(Si2O6) |
Mn | ⓘ Manganhumite | (Mn2+,Mg)7(SiO4)3(OH)2 |
Mn | ⓘ Piemontite | (CaCa)(AlAlMn3+)O[Si2O7][SiO4](OH) |
Mn | ⓘ Rhodochrosite | MnCO3 |
Mn | ⓘ Rhodonite | CaMn3Mn[Si5O15] |
Fe | Iron | |
Fe | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
Fe | ⓘ Hematite | Fe2O3 |
Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
Fe | ⓘ Pyrite | FeS2 |
Fe | ⓘ Hematite var. Specularite | Fe2O3 |
Other Databases
Link to USGS MRDS: | 10095174 |
---|
Other Regions, Features and Areas containing this locality
This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to
visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders
for access and that you are aware of all safety precautions necessary.
References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file ID #0060390002