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Oro Rico Mine (Penon Blanco Mine), Peñon Blanco Peak, Coulterville, Coulterville Mining District, Mariposa County, California, USAi
Regional Level Types
Oro Rico Mine (Penon Blanco Mine)Mine
Peñon Blanco PeakPeak
Coulterville- not defined -
Coulterville Mining DistrictMining District
Mariposa CountyCounty
CaliforniaState
USACountry

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PhotosMapsSearch
06735800017272093805441.jpg
Mine from highway

Oro Rico Mine, Peñon Blanco Peak, Coulterville, Coulterville Mining District, Mariposa County, California, USA
06735800017272093805441.jpg
Mine from highway

Oro Rico Mine, Peñon Blanco Peak, Coulterville, Coulterville Mining District, Mariposa County, California, USA
06735800017272093805441.jpg
Mine from highway

Oro Rico Mine, Peñon Blanco Peak, Coulterville, Coulterville Mining District, Mariposa County, California, USA
Latitude & Longitude (WGS84):
37° 44' 50'' North , 120° 14' 10'' West
Latitude & Longitude (decimal):
37.74722,-120.23611
GeoHash:
G#: 9qdqxzwtx
GRN:
N26W68
Type:
Mine
Köppen climate type:
Csa : Hot-summer Mediterranean climate
Nearest Settlements:
PlacePopulationDistance
Coulterville201 (2011)5.3km
Greeley Hill915 (2011)9.3km
Groveland601 (2011)10.1km
Chinese Camp126 (2011)22.1km
Bear Valley125 (2011)22.3km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Mariposa Gem & Mineral ClubMariposa, California38km
Calaveras Gem & Mineral SocietyAngels Camp, California45km
Mindat Locality ID:
82415
Long-form identifier:
mindat:1:2:82415:7
GUID (UUID V4):
0


A Au-Cu-Pb-Zn occurrence/group of claims/mine located in secs. 19, 20 & 29, T2S, R16E, MDM, 2.8 km (9,200 feet) NE of Peño Blanco Peak (coordinates of record) (on the E slope of Penon Blanco Point, just S of the Tuolumne County line along highway 49). Property consisted of 5 patented claims and 2 unpatented claims, totaling over 100 acres. Operated by Oro Rico Mines Co. C/O A. D. Vencile. MRDS database stated accuracy for this location is 500 meters. Location may be the prospects shown in the NE¼ of sec. 19, SW¼ sec. 20, and in the NW¼ sec. 29, USGS quadrangle Coulterville, California (1949).

Claims includes: Old Judge, South Judge, Little Judge, Penon Blanco and North Penon Blanco (patented); and the Star and Stevenson claims (unpatented).

Local rocks include ultramafic rocks, chiefly Mesozoic, unit 2 (Western Sierra Nevada and Klamath Mountains).

Workings include underground openings comprised of adits, shafts, tunnels and drifting. Inn 1954, 2 workigns were still recognizable on the Penon Blanco claim, but none was accessible without some cleaning out.

One of the earliest worked claims in the county. Considerable development had been made by 1868 and several ore shoots 2-4 feet thick had been discovered and ore averaged $10 - $12 per ton (period values). Worked intermittently until 1912. Little or no work done until after 1928 due to litigation. Some exploration and development done in 1934. Little or no work done since.

Total production, although incompletely recorded, is small. Copper production was less than 100,000 pounds (Eric, J.C. (1948)).

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


21 valid minerals.

Detailed Mineral List:

ⓘ Albite
Formula: Na(AlSi3O8)
ⓘ Altaite
Formula: PbTe
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ 'Chlorite Group'
ⓘ Dolomite
Formula: CaMg(CO3)2
ⓘ Dolomite var. Iron-bearing Dolomite
Formula: Ca(Mg,Fe)(CO3)2
ⓘ Galena
Formula: PbS
ⓘ Gersdorffite
Formula: NiAsS
ⓘ Graphite
Formula: C
ⓘ Hessite
Formula: Ag2Te
ⓘ Magnesite
Formula: MgCO3
ⓘ Melonite
Formula: NiTe2
ⓘ Millerite
Formula: NiS
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Muscovite var. Mariposite
Formula: K(Al,Cr)2(Al,Si)4O10(OH)2
ⓘ Muscovite var. Phengite
Formula: KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
ⓘ Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Native Gold
Formula: Au
ⓘ Petzite
Formula: Ag3AuTe2
ⓘ Pyrite
Formula: FeS2
ⓘ Pyrrhotite
Formula: Fe1-xS
ⓘ Quartz
Formula: SiO2
ⓘ Rutile
Formula: TiO2
ⓘ 'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4
ⓘ Skutterudite
Formula: CoAs3
ⓘ Sphalerite
Formula: ZnS
ⓘ Talc
Formula: Mg3Si4O10(OH)2
ⓘ 'Tetrahedrite Subgroup'
Formula: Cu6(Cu4C2+2)Sb4S12S

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Gold1.AA.05Au
ⓘGraphite1.CB.05aC
Group 2 - Sulphides and Sulfosalts
ⓘHessite2.BA.60Ag2Te
ⓘPetzite2.BA.75Ag3AuTe2
ⓘSphalerite2.CB.05aZnS
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘPyrrhotite2.CC.10Fe1-xS
ⓘMillerite2.CC.20NiS
ⓘAltaite2.CD.10PbTe
ⓘGalena2.CD.10PbS
ⓘMelonite2.EA.20NiTe2
ⓘPyrite2.EB.05aFeS2
ⓘGersdorffite2.EB.25NiAsS
ⓘSkutterudite2.EC.05CoAs3
ⓘ'Tetrahedrite Subgroup'2.GB.05Cu6(Cu4C2+2)Sb4S12S
Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
ⓘRutile4.DB.05TiO2
Group 5 - Nitrates and Carbonates
ⓘMagnesite5.AB.05MgCO3
ⓘDolomite5.AB.10CaMg(CO3)2
ⓘvar. Iron-bearing Dolomite5.AB.10Ca(Mg,Fe)(CO3)2
Group 9 - Silicates
ⓘTalc9.EC.05Mg3Si4O10(OH)2
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘvar. Phengite9.EC.15KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
ⓘvar. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘvar. Mariposite9.EC.15K(Al,Cr)2(Al,Si)4O10(OH)2
ⓘAlbite9.FA.35Na(AlSi3O8)
Unclassified
ⓘ'Chlorite Group'-
ⓘ'Serpentine Subgroup'-D3[Si2O5](OH)4

List of minerals for each chemical element

HHydrogen
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Hⓘ TalcMg3Si4O10(OH)2
Hⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Hⓘ Muscovite var. MaripositeK(Al,Cr)2(Al,Si)4O10(OH)2
Hⓘ Serpentine SubgroupD3[Si2O5](OH)4
CCarbon
Cⓘ DolomiteCaMg(CO3)2
Cⓘ GraphiteC
Cⓘ MagnesiteMgCO3
Cⓘ Dolomite var. Iron-bearing DolomiteCa(Mg,Fe)(CO3)2
OOxygen
Oⓘ AlbiteNa(AlSi3O8)
Oⓘ DolomiteCaMg(CO3)2
Oⓘ MagnesiteMgCO3
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Oⓘ QuartzSiO2
Oⓘ RutileTiO2
Oⓘ TalcMg3Si4O10(OH)2
Oⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Oⓘ Muscovite var. MaripositeK(Al,Cr)2(Al,Si)4O10(OH)2
Oⓘ Dolomite var. Iron-bearing DolomiteCa(Mg,Fe)(CO3)2
Oⓘ Serpentine SubgroupD3[Si2O5](OH)4
NaSodium
Naⓘ AlbiteNa(AlSi3O8)
MgMagnesium
Mgⓘ DolomiteCaMg(CO3)2
Mgⓘ MagnesiteMgCO3
Mgⓘ Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Mgⓘ TalcMg3Si4O10(OH)2
Mgⓘ Dolomite var. Iron-bearing DolomiteCa(Mg,Fe)(CO3)2
AlAluminium
Alⓘ AlbiteNa(AlSi3O8)
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Alⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Alⓘ Muscovite var. MaripositeK(Al,Cr)2(Al,Si)4O10(OH)2
SiSilicon
Siⓘ AlbiteNa(AlSi3O8)
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Siⓘ QuartzSiO2
Siⓘ TalcMg3Si4O10(OH)2
Siⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Siⓘ Muscovite var. MaripositeK(Al,Cr)2(Al,Si)4O10(OH)2
Siⓘ Serpentine SubgroupD3[Si2O5](OH)4
SSulfur
Sⓘ ChalcopyriteCuFeS2
Sⓘ GalenaPbS
Sⓘ GersdorffiteNiAsS
Sⓘ MilleriteNiS
Sⓘ PyriteFeS2
Sⓘ PyrrhotiteFe1-xS
Sⓘ SphaleriteZnS
Sⓘ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
KPotassium
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Kⓘ Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Kⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Kⓘ Muscovite var. MaripositeK(Al,Cr)2(Al,Si)4O10(OH)2
CaCalcium
Caⓘ DolomiteCaMg(CO3)2
Caⓘ Dolomite var. Iron-bearing DolomiteCa(Mg,Fe)(CO3)2
TiTitanium
Tiⓘ RutileTiO2
CrChromium
Crⓘ Muscovite var. MaripositeK(Al,Cr)2(Al,Si)4O10(OH)2
FeIron
Feⓘ ChalcopyriteCuFeS2
Feⓘ Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Feⓘ PyriteFeS2
Feⓘ PyrrhotiteFe1-xS
Feⓘ Dolomite var. Iron-bearing DolomiteCa(Mg,Fe)(CO3)2
CoCobalt
Coⓘ SkutteruditeCoAs3
NiNickel
Niⓘ GersdorffiteNiAsS
Niⓘ MeloniteNiTe2
Niⓘ MilleriteNiS
CuCopper
Cuⓘ ChalcopyriteCuFeS2
Cuⓘ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
ZnZinc
Znⓘ SphaleriteZnS
AsArsenic
Asⓘ GersdorffiteNiAsS
Asⓘ SkutteruditeCoAs3
AgSilver
Agⓘ HessiteAg2Te
Agⓘ PetziteAg3AuTe2
SbAntimony
Sbⓘ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
TeTellurium
Teⓘ AltaitePbTe
Teⓘ HessiteAg2Te
Teⓘ MeloniteNiTe2
Teⓘ PetziteAg3AuTe2
AuGold
Auⓘ Native GoldAu
Auⓘ PetziteAg3AuTe2
PbLead
Pbⓘ AltaitePbTe
Pbⓘ GalenaPbS

Other Databases

Link to USGS MRDS:10030836

Other Regions, Features and Areas containing this locality

North AmericaContinent
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

(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file ID #0060430040
Logan, Clarence August (1934), Mother Lode Gold Belt of California: California Division Mines Bulletin 108, 221 pp.: 185-186.
Bramel, Hadley R., Heyl, George R., Cox, Manning W., Ransome, Alfred L., Eric, John H., Wyant, Donald G. (1948) Copper in California. Bulletin 144. California State Mining Bureau p.269
Bowen, O.E., Jr. & C.H. Gray, Jr. (1957), Mines and mineral deposits of Mariposa County, California: California Journal of Mines and Geology (Report 53): 53(1&2): 147-148, 294.
Goodwin, Joseph Grant (1957) Lead and zinc in California. California Journal of Mines and Geology, Division of Mines (Report 53): 53(3&4): 551.
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
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