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Hog Mountain prospect (Hog Mountain claim), Hog Mountain, Jacksonville Mining District, Tuolumne County, California, USAi
Regional Level Types
Hog Mountain prospect (Hog Mountain claim)Prospect
Hog MountainMountain
Jacksonville Mining DistrictMining District
Tuolumne CountyCounty
CaliforniaState
USACountry

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Latitude & Longitude (WGS84):
37° 52' 44'' North , 120° 20' 36'' West
Latitude & Longitude (decimal):
Nearest Settlements:
PlacePopulationDistance
Chinese Camp126 (2011)7.9km
Groveland601 (2011)10.7km
Jamestown3,433 (2011)10.8km
East Sonora2,266 (2011)11.1km
Sonora4,818 (2017)12.2km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Calaveras Gem & Mineral SocietyAngels Camp, California27km
Mindat Locality ID:
97837
Long-form identifier:
mindat:1:2:97837:9
GUID (UUID V4):
0


A Mn occurrence/prospect located 1.1 km (3,600 feet) ESE of Hog Mountain (coordinates of record) (on the steep S slope of Hog Mountain, about 900 feet above the Tuolumne River, about 7½ miles NE of Jackasonville; about 5 miles E of Chinese Camp, and about 10 miles SE of Jamestown), on a located claim. Discovered in 1918. MRDS database accuracy for this location is not stated.

The main outcrop of the claim lies on the steep S slope of Jacksonville. The ore body is 3.66 meters wide. Manganese is associated with massive metachert lenses. Dusty black manganese oxide occurs as stains and finely disseminated particles. The largest ore body varies from 8 to 12 feet in width and can be traced for over 100 feet. No primary minerals are present, but the ore is similar to the oxidation product of manganese garnet in Calaveras County. The metachert (quartzite) is very pure with few limonite and sericite particles. Rocks on this part of Hog Mountain are quartz schist, quartz-mica schist, and quartzite of the Calaveras Formation. Local rocks include Paleozoic marine rocks, undivided, unit 4 (Western Sierra Nevada).

Analytical data results: Ore grade is 15% Mn, 70% insoluble.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


1 valid mineral.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 9 - Silicates
Rhodonite9.DK.05CaMn3Mn[Si5O15]
Unclassified
'Manganese Oxides'-

List of minerals for each chemical element

OOxygen
O RhodoniteCaMn3Mn[Si5O15]
SiSilicon
Si RhodoniteCaMn3Mn[Si5O15]
CaCalcium
Ca RhodoniteCaMn3Mn[Si5O15]
MnManganese
Mn RhodoniteCaMn3Mn[Si5O15]

Other Databases

Link to USGS MRDS:10033740

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate
USA

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