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Chlorite Schist Knob occurrence, Santa Rita Peak, New Idria District, Diablo Range, San Benito Co., California, USA

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Latitude & Longitude (WGS84): 36° 19' 50'' North , 120° 36' 11'' West
Latitude & Longitude (decimal): 36.33077,-120.60310
Köppen climate type:Csb : Warm-summer Mediterranean climate


Occurrences located in the SE¼ sec. 25, T18S, R12E, MDM, about 1.8 km (1.1 miles) S of Santa Rita Peak (coordinates of record), 2.0 km (1.2 miles) NE of Condon Peak (coordinates of record (Fresno County), below the crest of the knob (about 500 feet [153.8 meters] N of the chlorite schist knob), ½ mile (0.8 km) S of the California (Dallas) Gem Mine.

NOTE: The geographic coordinates presented are for the approximate center of the SE¼ of sec. 25.

Mineralization is substantially, if not completely, hosted in chlorite schist.


Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


13 valid minerals.

Rock Types Recorded

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Alphabetical List Tree Diagram

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Late Jurassic - Middle Jurassic
145 - 174.1 Ma



ID: 2881475
Ultramafic rocks, chiefly Mesozoic, unit 3 (Coast Ranges and Western Klamath Mountains)

Age: Jurassic (145 - 174.1 Ma)

Stratigraphic Name: Josephine Peridotite

Description: Ultramafic rocks, mostly serpentine. Minor peridotite, gabbro, and diabase. Chiefly Mesozoic unit 3

Comments: Coast Range ophiolite, Josephine ophiolite. Ultramafic rocks in Middle to Late Jurassic ophiolites of Coast Ranges and westernmost Klamath Mts.

Lithology: Major:{serpentinite}, Minor:{peridotite}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License



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

Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Bolander, L. Ph., Jr. (1950), New California mineral: perovskite: The Mineralogist: 18: 65.
Pabst, Adolf (1951), Minerals of the serpentine area in San Benito County, California Rocks & Minerals: 26: 482.
Moller, W.P. (1965) Minerals of southern San Benito County, California. Gems and Minerals: 331: 28-32.
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 195, 286, 325.
Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 151, 170, 174, 176, 322, 323, 434, 440, 476, 502.

 
Mineral and/or Locality  
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