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New Idria Mine (New Idria group; New Hope vein), Idria (New Idria), San Benito County, California, USAi
Regional Level Types
New Idria Mine (New Idria group; New Hope vein)Mine
Idria (New Idria)Town (Former)
San Benito CountyCounty
CaliforniaState
USACountry

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Latitude & Longitude (WGS84):
36° 24' 51'' North , 120° 40' 24'' West
Latitude & Longitude (decimal):
36.41444,-120.67361
GeoHash:
G#: 9q6pnj01t
GRN:
N25W70
Type:
Mine
Köppen climate type:
Csb : Warm-summer Mediterranean climate
Nearest Settlements:
PlacePopulationDistance
Three Rocks246 (2011)27.0km
Cantua Creek466 (2011)33.4km
Coalinga16,564 (2017)41.5km
San Lucas269 (2015)44.4km
Tranquillity799 (2011)45.7km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Coalinga Rockhound SocietyCoalinga, California41km
Mindat Locality ID:
3537
Long-form identifier:
mindat:1:2:3537:1
GUID (UUID V4):
816931cc-941f-4772-a40a-cd1cfdaf5814


A former Hg occurrence/mine located in the NE¼SW¼SE¼ sec. 29, T17S, R12E, MDM, 0.3 km (0.2 mile; 900 feet) SSE of Idria proper, on the S side of the former town, on private land. Discovered in 1853 and in continuous production since, except the period 1921-1922. MRDS database stated accuracy for this location is 500 - 1,000 meters.

Mineralization is a Hg deposit in hydrothermally indurated beds of the Panoche Formation beneath the New Idria thrust fault and associated tear faults which offset the thrust. Local rocks include Upper Cretaceous marine rocks, unit 1 (Upper Great Valley Sequence) and/or ultramafic rocks, chiefly Mesozoic, unit 3 (Coast Ranges and Western Klamath Mountains).



Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

16 valid minerals.

Detailed Mineral List:

ⓘ Cinnabar
Formula: HgS
Description: Occurs as veins and stockworks occupying fractures in altered rocks.
ⓘ Diadochite
Formula: Fe3+2(PO4)(SO4)(OH) · 6H2O
ⓘ Dolomite
Formula: CaMg(CO3)2
Description: Occurs in veins.
ⓘ Epsomite
Formula: MgSO4 · 7H2O
Description: Occurs as crusts of long fibers, occasionally cut by later cinnabar veinlets.
ⓘ Idrialite
Formula: C22H14
ⓘ Jarosite
Formula: KFe3+3(SO4)2(OH)6
Description: Occurs as measurable crystals.
ⓘ Koninckite
Formula: Fe3+PO4 · 3H2O
ⓘ Melanterite
Formula: Fe2+(H2O)6SO4 · H2O
Description: Occurs as botryoidal masses and silky fibers.
ⓘ Mercury
Formula: Hg
ⓘ Metacinnabar
Formula: HgS
Description: Occurs in large pieces/masses.
ⓘ Metacinnabar var. Selenium-bearing Metacinnabar
Formula: Hg(S,Se)
ⓘ Millerite
Formula: NiS
Habit: Acicular
Description: Occurs as small crystals perched on cinnabar crystals.
ⓘ Pecoraite
Formula: Ni3(Si2O5)(OH)4
ⓘ Stibnite
Formula: Sb2S3
Habit: Acicular
Description: Widely distributed as fine crystals in dolomite veins.
ⓘ Tiemannite
Formula: HgSe
ⓘ Vivianite
Formula: Fe2+Fe2+2(PO4)2 · 8H2O
ⓘ Voltaite
Formula: K2Fe2+5Fe3+3Al(SO4)12 · 18H2O
Description: Occurred on No. 4 level.

Gallery:

HgSⓘ Cinnabar
Hgⓘ Mercury

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘMercury1.AD.05Hg
Group 2 - Sulphides and Sulfosalts
ⓘMetacinnabar2.CB.05aHgS
ⓘTiemannite2.CB.05aHgSe
ⓘMetacinnabar
var. Selenium-bearing Metacinnabar		2.CB.05aHg(S,Se)
ⓘMillerite2.CC.20NiS
ⓘCinnabar2.CD.15aHgS
ⓘStibnite2.DB.05Sb2S3
Group 5 - Nitrates and Carbonates
ⓘDolomite5.AB.10CaMg(CO3)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘJarosite7.BC.10KFe3+3(SO4)2(OH)6
ⓘMelanterite7.CB.35Fe2+(H2O)6SO4 · H2O
ⓘEpsomite7.CB.40MgSO4 · 7H2O
ⓘVoltaite7.CC.25K2Fe2+5Fe3+3Al(SO4)12 · 18H2O
Group 8 - Phosphates, Arsenates and Vanadates
ⓘVivianite8.CE.40Fe2+Fe2+2(PO4)2 · 8H2O
ⓘKoninckite8.CE.55Fe3+PO4 · 3H2O
ⓘDiadochite8.DB.05Fe3+2(PO4)(SO4)(OH) · 6H2O
Group 9 - Silicates
ⓘPecoraite9.ED.15Ni3(Si2O5)(OH)4
Group 10 - Organic Compounds
ⓘIdrialite10.BA.20C22H14

List of minerals for each chemical element

HHydrogen
Hⓘ DiadochiteFe23+(PO4)(SO4)(OH) · 6H2O
Hⓘ EpsomiteMgSO4 · 7H2O
Hⓘ IdrialiteC22H14
Hⓘ JarositeKFe33+(SO4)2(OH)6
Hⓘ KoninckiteFe3+PO4 · 3H2O
Hⓘ MelanteriteFe2+(H2O)6SO4 · H2O
Hⓘ PecoraiteNi3(Si2O5)(OH)4
Hⓘ VivianiteFe2+Fe22+(PO4)2 · 8H2O
Hⓘ VoltaiteK2Fe52+Fe33+Al(SO4)12 · 18H2O
CCarbon
Cⓘ DolomiteCaMg(CO3)2
Cⓘ IdrialiteC22H14
OOxygen
Oⓘ DiadochiteFe23+(PO4)(SO4)(OH) · 6H2O
Oⓘ DolomiteCaMg(CO3)2
Oⓘ EpsomiteMgSO4 · 7H2O
Oⓘ JarositeKFe33+(SO4)2(OH)6
Oⓘ KoninckiteFe3+PO4 · 3H2O
Oⓘ MelanteriteFe2+(H2O)6SO4 · H2O
Oⓘ PecoraiteNi3(Si2O5)(OH)4
Oⓘ VivianiteFe2+Fe22+(PO4)2 · 8H2O
Oⓘ VoltaiteK2Fe52+Fe33+Al(SO4)12 · 18H2O
MgMagnesium
Mgⓘ DolomiteCaMg(CO3)2
Mgⓘ EpsomiteMgSO4 · 7H2O
AlAluminium
Alⓘ VoltaiteK2Fe52+Fe33+Al(SO4)12 · 18H2O
SiSilicon
Siⓘ PecoraiteNi3(Si2O5)(OH)4
PPhosphorus
Pⓘ DiadochiteFe23+(PO4)(SO4)(OH) · 6H2O
Pⓘ KoninckiteFe3+PO4 · 3H2O
Pⓘ VivianiteFe2+Fe22+(PO4)2 · 8H2O
SSulfur
Sⓘ CinnabarHgS
Sⓘ DiadochiteFe23+(PO4)(SO4)(OH) · 6H2O
Sⓘ EpsomiteMgSO4 · 7H2O
Sⓘ JarositeKFe33+(SO4)2(OH)6
Sⓘ MelanteriteFe2+(H2O)6SO4 · H2O
Sⓘ MetacinnabarHgS
Sⓘ MilleriteNiS
Sⓘ StibniteSb2S3
Sⓘ VoltaiteK2Fe52+Fe33+Al(SO4)12 · 18H2O
Sⓘ Metacinnabar var. Selenium-bearing MetacinnabarHg(S,Se)
KPotassium
Kⓘ JarositeKFe33+(SO4)2(OH)6
Kⓘ VoltaiteK2Fe52+Fe33+Al(SO4)12 · 18H2O
CaCalcium
Caⓘ DolomiteCaMg(CO3)2
FeIron
Feⓘ DiadochiteFe23+(PO4)(SO4)(OH) · 6H2O
Feⓘ JarositeKFe33+(SO4)2(OH)6
Feⓘ KoninckiteFe3+PO4 · 3H2O
Feⓘ MelanteriteFe2+(H2O)6SO4 · H2O
Feⓘ VivianiteFe2+Fe22+(PO4)2 · 8H2O
Feⓘ VoltaiteK2Fe52+Fe33+Al(SO4)12 · 18H2O
NiNickel
Niⓘ MilleriteNiS
Niⓘ PecoraiteNi3(Si2O5)(OH)4
SeSelenium
Seⓘ TiemanniteHgSe
Seⓘ Metacinnabar var. Selenium-bearing MetacinnabarHg(S,Se)
SbAntimony
Sbⓘ StibniteSb2S3
HgMercury
Hgⓘ CinnabarHgS
Hgⓘ MercuryHg
Hgⓘ MetacinnabarHgS
Hgⓘ TiemanniteHgSe
Hgⓘ Metacinnabar var. Selenium-bearing MetacinnabarHg(S,Se)

Other Databases

Link to USGS MRDS:10110937

Localities in this Region

USA
  • California

Other Regions, Features and Areas containing this locality

North America
North America PlateTectonic Plate
USA

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

U.S. Bureau of Mines Minerals Availability System/Mineral Industry Location System (MAS/MILS): file #0060690120 & 0060690175.
www.mineralsocal.org.
Becker, George F. (1888), Geology of the quicksilver deposits of the Pacific slope: USGS Monograph 13, atlas: 302, 306.
Dana, Edward Salisbury (1892) A System of Mineralogy (6th ed.)
Rogers, Austin Flint (1912b), Notes on rare minerals from California: Columbia University, School of Mines Quarterly: 33: 376.
Bradley, W.W. (1918), Quicksilver resources of California, with a section on metallurgy and ore dressing: California Mining Bureau. Bulletin 78, 389 pp.: 97.
Laizure, Clyde McK (1926), Marin, San Benito, Santa Cruz, and Sonoma Counties: California Mining Bureau. Report 22: 242-244.
Bradley, W.W. (1937), Thirty-third report of the State Mineralogist: California Division Mines Report 33: 251.
Rogers, Austin Flint (1938a), Diadochite, a mineraloid from the New Idria mine, San Benito County, California […(abstract): American Mineralogist: 22(12), part 2: 13; …vol. 23: 178 (1938)]: 178.
Eckel, Edwin Butt & W.B. Myers (1946), Quicksilver deposits of the New Idria district, San Benito and Fresno Counties, California: California Journal of Mines and Geology, California Division Mines (Report 42): 42: 109-115.
California Journal of Mines and Geology (1947): 43: 55-58.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 1013.
Learned, R.E. (1962) Paragenesis of mercury-ore deposits. Unpublished Master’s thesis, University of California, Los Angeles: 2, 43.
Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 119, 146-147, 168, 178, 233, 236, 258, 260, 262, 382.
Linn, R.K. (1968) New Idria mining district. In: Ore Deposits of the United States, 1933-1967. The Graton-Sales volume, New York, A.I.M.E.: 1623-1649.
Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
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