San Emidio Hg-Sulphur Prospects

The San Emidio Hg-Sulphur Prospects is a mercury, sulfur, and gypsum-anhydrite mine located in Washoe county, Nevada at an elevation of 4,058 feet.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Site Name

Primary: San Emidio Hg-Sulphur Prospects
Secondary: NBMG Sample Site 2402
Secondary: Mud Flat Prospect

Commodity

Primary: Mercury
Primary: Sulfur
Primary: Gypsum-Anhydrite

Location

State: Nevada
County: Washoe
District: San Emidio Desert Area

Land Status

Land ownership: Private
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

Not available

Mineral Deposit Model

Model Name: Hot-spring Hg

Orebody

Form: LINEAR

Structure

Type: R
Description: Range-Front Fault

Alterations

Alteration Type: L
Alteration Text: Hydrothermal

Rocks

Name: Alluvium
Role: Host
Age Type: Host Rock
Age Young: Pleistocene

Analytical Data

Analytical Data: SAMPLE 2402 FROM MORE NORTHERLY GROUP OF TRENCHES CONTAINS 0.05% FE, 0.02% MG., 0.15% CA, 0.2% TI, 50 PPM B, 500 PPM BA, 10 PPM CU, 5 PPM MO, 20 PPM V, 100 PPM ZR.

Materials

Ore: Cinnabar
Ore: Sulfur
Ore: Gypsum
Gangue: Opal
Gangue: Chalcedony
Gangue: Kaolinite
Gangue: Sericite
Gangue: Quartz

Comments

Comment (Deposit): THIS RECORD HAS BEEN MERGED WITH M242712, WHICH HAS BEEN DELETED.

Comment (Location): ON EAST SIDE OF SAN EMIDIO DESERT; UNSURVEYED TOWNSHIP. ; INFO FROM LAND.ST :(1972)

Comment (Deposit): CINNABAR OCCURS IN ALTERED PLEISTOCENE ALLUVIUM IN A N-S ZONE ALONG A RANGE-FRONT FAULT ZONE, FOR AT LEAST 3 MILES ALONG STRIKE. ASSOCIATED MINERALS ARE NATIVE SULFUR, GYPSUM, OPAL, CHALCEDONY, QUARTZ, KAOLINITE, SERICITE, AND OTHER ALTERATION MINERALS. ZONE IS OVER 100 FT WIDE IN PLACES. A THIN LAYER OF LATER ALLUVIAL MATERIAL COVERS THE ALTERED ZONE. CINNABAR WAS SEEN IN 2 PLACES ALONG THE ZONE AND AN HG SOIL ANOMALY WAS DETECTED AT A THIRD LOCALITY. CINNABAR OCCURS AS VERY FINE-GRAINED PARTICLES SCATTERED THROUGHOUT BOTH SILICIFIED AND NON-SILICIFIED ALTERED ROCK, AND AS COATING ON FRACTURES AND IN VOIDS. OCCURRENCE OF CINNABAR SEEMS TO FOLLOW NATIVE SULPHUR, BUT THERE ARE HIGH-SULFUR AREAS WITH NO CINNABAR AND CONVERSELY, CINNABAR OCCURRENCES WITH NO SULFUR. ALTERED ZONE ALMOST CERTAINLY REPRESENTS DEPOSITS OF EXTINCT HOT SPRINGS.

Comment (Workings): ABOUT 12 TRENCHES SPACED 200-400 FT APART ACROSS THE ZONE. TRENCHES RUN FOR 0.25 MILE; SHALLOW PITS

References

Reference (Deposit): JONES, R.B., 4 JUL 84, NBMG FIELD EXAMINATION AND SAMPLE ANALYSIS.

Reference (Deposit): BONHAM, H.F., JR. AND PAPKE, K.G., 1969, GEOLOGY & MINERAL DEPOSITS OF WASHOE & STOREY COUNTIES, NV, NBMG BULL 70, P. 94-96.

Reference (Deposit): NBMG STAFF, 1985, NBMG OFR 85-3.

Nevada Gold

Nevada has a total of 368 distinct gold districts. Of the of those, just 36 are major producers with production and/or reserves of over 1,000,000 ounces, 49 have production and/or reserves of over 100,000 ounces, with the rest having less than 100,000 ounces. Read more: Gold Districts of Nevada.