Latitude & Longitude (WGS84):
39° 41' 32'' North , 121° 34' 1'' West
Latitude & Longitude (decimal):
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
Long-form identifier:
mindat:1:2:74178:4
A Cr-Sb-Fe-asbestos occurrence located in the S½NE¼ sec. 7, T21N, R4E, MDM, 4.2 km (2.6 miles) NE of Sausage Mountain (coordinates of record), on the western shore of Lake Oroville, in the Lime Saddle area (also 4.0 km (2.5 miles) WSW of Yankee Hill [on opposite side of Lake Oroville], and approximately 4 miles SSE of Paradise, in the Lake Oroville State Recreation area), on state park land. Owned by the State of California (100%). Operated by Clark, Riemers, Mc Nallen and Stevens (1942). Operated by Mr. Cashom (timeframe unstated). MRDS database stated accuracy for this location is 1,000 meters.
Mineralization is a Cr-chrysotile deposit hosted in peridotite. The ore body(ies) is(are) podiform and lenticular in form, strike N30W and dip 70N, at a width of 3 meters and a length of 25 meters. The primary mode of origin was magmatic differentiation. Primary ore control is stated as "other." Wallrock alteration is intense (serpentization of peridotite). This deposit is located in an elongated peridotite mass, 200 to 300 feet wide, which is in vertical contact with amphibolite schist. Local rocks include Tertiary pyroclastic and volcanic mudflow deposits, unit 9 (Cascade Range).
Workings include surface and underground openings comprised of a large open cut (1943), an 85 foot long adit, a 25 foot deep winze, and a 40 foot deep shaft.
Production data are found in: Rynearson, Garn Arthur (1953): 282-283.
Production information: About 100 tons were mined in 1916 and 28 tons in 1917. About 520 tons total were mined.
Production statistics: Year: 1918: Grade: ^42% Cr2O3; 1942: Grade: estimated at ^37.98% Cr2o3; 1953: 50% Cr.
Reserve-Resource data are found in: Rynearson, Garn Arthur (1953): 283.
Reserve-resource information: Exploration was recommended to a greater depth in the winze and near the serpentine-schist contact.
Select Mineral List Type
Standard
Detailed Gallery
Strunz
Chemical Elements
Mineral List
2 valid minerals.
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides |
|---|
| ⓘ | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
| Group 9 - Silicates |
|---|
| ⓘ | Chrysotile | 9.00. | Mg3(Si2O5)(OH)4 |
List of minerals for each chemical element
Other Databases
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
Bradley, W.W., Huguenin, Emile, Logan, C.A., Tucker, W.B., and Waring, C.A. (1918), Manganese and chromium in California: California Mining Bureau. Bulletin 76, 248 pp.: 119. McCulloch, W.C., Oesterling, W.A., Spurck, W.H., & Tischler, M.S. (1964), Minerals for Industry, Northern California, Southern Pacific Company: Vol. II: 20. 
