Carson Hill Gold Mining Company Mines (Carson Hill Mines), Melones, Carson Hill Mining District (Melones Mining District), Calaveras County, California, USAi
Regional Level Types | |
---|---|
Carson Hill Gold Mining Company Mines (Carson Hill Mines) | Group of Mines |
Melones | - not defined - |
Carson Hill Mining District (Melones Mining District) | Mining District |
Calaveras County | County |
California | State |
USA | Country |
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Latitude & Longitude (WGS84):
38° 1' 18'' North , 120° 30' 9'' West
Latitude & Longitude (decimal):
Type:
Group of Mines
Köppen climate type:
Nearest Settlements:
Place | Population | Distance |
---|---|---|
Tuttletown | 668 (2011) | 5.0km |
Angels Camp | 2,677 (2012) | 6.1km |
Vallecito | 442 (2011) | 8.0km |
Columbia | 2,297 (2017) | 9.0km |
Jamestown | 3,433 (2011) | 10.3km |
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
Local clubs are the best way to get access to collecting localities
Club | Location | Distance |
---|---|---|
Calaveras Gem & Mineral Society | Angels Camp, California | 6km |
Amador County Gem & Mineral Society | Sutter Creek, California | 49km |
Mindat Locality ID:
263616
Long-form identifier:
mindat:1:2:263616:3
GUID (UUID V4):
63808b19-7133-4646-b736-bccecbaff9de
A group of Au-Ag mines located in secs. 13, 14 & 24, T2N, R13E, MDM, in the Melones area (about 3½ miles SE of Angels Camp), on private land (Calaveras County Planning Department). Discovered in 1850.
Names of included properties: Adelaide, Bright Star, Brown Calaveras, California Ophir, Enterprise, Extension, Finnegan, Independence, Iron Rock, Kentucky, Keystone, Last Chance, Melones, Mexican, Mineral Mountain, Morgan, New Year, Reserve, Relief, Santa Cruz, South Carolina, Stanislaus, Stephens, and the Union.
The Carson Hill Mines are a collection of mines that operated independently and through various consolidations in the Carson Hill district of the Mother Lode belt. The Carson Hill district consists of that portion of the Mother Lode extending from Carson Flat southeast through Carson Hill to the town of Melones on the Stanislaus River. It has also been known as the Melones district. The Carson Hill mines were the largest source of lode gold in Calaveras County, contributing about $26 million of the district's total production of $27 million.
The principal properties of the Carson Hill mines group were the Morgan, Melones, Reserve, Calaveras, Finnegan, and Stanislaus mines. Other claims that were consolidated with one ore more of these mines were the Adelaide, Carson, Enterprise, Iron Rock, Irvine, Kentucky, May Day, Mayflower, McMillan, Mineral Mountain, Point Rock, relief, South Carolina, and Union claims. Because of the complexity of the history of operations and various consolidations, all have been generally lumped together for this report, with only the more important mines being described in more detail. Most of the earlier information contained in this report is taken from Clark and Lydon ( 1962). Many more sources, containing additional or supplemental information are listed in the references following this report.
The properties of the Carson Hill Mines group lay idle until 1975 when they were acquired by Cyprus Mines Corporation. After evaluation of the properties, Cyprus abandoned the project. In 1984, Grandview Resources acquired the property. Following further evaluations including 43,000 feet of reverses circulation drilling, the decision was made to proceed with mining. Permits to reopen the mine as an open pit operation were approved in 1985. Operations consisted of open pit mining with extraction by heap leaching using a valley leach method, carbon in column adsorption, high temperature-low pressure glycol elution, and electrowinnowing. Ore was produced at rates that ranged from 7,000 to 14,000 tons per day (Collum, 1990) with an average gold content ranging from 0.046-0.057 oz./ton. Recovery averaged between 70% to 75%. The first dore bar was poured in December, 1986. In 1988 Western Mining Corporation took over operations, but mining operations ceased in October, 1989, after dropping gold prices and a deteriorating heap leach recovery rate made operation uneconomic. During this short period, the mine produced 90,000 ounces of gold (Collum, 1990). The mine site underwent reclamation during the 1990's.
Mineralization is a vein deposit (Mineral occurrence model information: Model code: 273; USGS model code: 36a; deposit model name: Low-sulfide Au-quartz vein; Mark3 model number: 27), hosted in schist. The host rocks range in age from Paleozoic to Mesozoic. The ore body is tabular, pinch & swell in form, strikes NW and dips 60NE at a thickness of 30.48 meters. There are 2 principal vein systems : the Calaveras system on the W and the Bull system on the E. The veins average 10 to 15 feet diameter. The veins intersects both N & S. Stringers of Au frequently cut out with cold chisels in the early workings. Free milling gold ore shoots in quartz veins. Largest lode source in the country. Augite tuff and breccia are common country rocks. Also, intrusions of gabbro, serpentine, talc and sericite schist are present. Principal country rocks also include phyllite, amphibolite and chloritic schist. The Bull vein is up to 40 feet and, to the S, splits into 2 veins which converge with the Calaveras vein. The vein is of coarse white quartz with chlorite ribbon structures. Five flat ore veins are present with a W20-30NE dip. The ore is hosted in talcose and pyritic schist. There are large masses of ankerite and mariposite. Large hanging wall, high-grade ore body mined to 4,550 feet depth. It averaged 175 feet by 15 feet on the Bull vein ore bodies at the 3,000 foot level, under the Morgan and Melones claims. Controls for ore emplacement included fracture controlled wall rock alteration in dilation zones and ore shoots within mesothermal gold-bearing quartz veins. Local alteration includes hydrothermal Alteration in the area resulting in mariposite-ankerite rocks. Regional strike of the country rock is NW and the dip is NE with intense folding & faulting. Local rocks include undivided pre-Cenozoic metavolcanic rocks, unit 2 (undivided).
Regional geologic structures include the Bear Mountains fault zone and the Melones fault zone. Local structures also include the Melones fault zone.
LOCAL GEOLOGY:
While the Carson Hill mines are within the Mother Lode belt, the geology of the Carson Hill area is much more complex and atypical of other productive Mother Lode areas.
Bedrock, which is assigned either to the Calaveras Complex or unnamed units of Jurassic age, consists of a succession of northwest-striking, northeast dipping beds of mafic metavolcanic and associated metasedimentary rocks that have been intensely folded, faulted, and metamorphosed to upper greenschist facies. Bedrock units in the mine area include, from east to west: a hanging wall of augite-hornblende meta-andesite, interbedded carbonaceous and volcaniclastic metasedimentary rocks which grade into interbedded clay-rich and/or siliceous metasedimentary rocks, and a footwall of serpentinized peridotite. The serpentinized peridotite envelops and is in contact with numerous fragments of dikes of gabbro to diorite. For the purposes of this report, the hanging wall and footwall are located with reference to the main Bull vein around which mining was focused (Collum, 1990).
Structure
The Carson Hill area displays extensive structural upheaval with several stages and styles of shearing and faulting. Early shearing is evident in zones of intensely sheared rock that parallel the regional foliation. Later faulting is recorded in the Bull and Calaveras veins. Later brittle movement is evident in west dipping reverse faults and east-dipping low-angle thrust faults that offset the Bull and/or Calaveras veins. The west dipping reverse faults moved obliquely, offsetting the Bull vein by as much as 100 feet (Collum, 1990). The east dipping thrust faults, hosting the so-called "Flat" veins, also offset the Bull vein and the mineralized wall rock which envelops it.
Three principal quartz vein systems exist at Carson Hill. The Bull and Calaveras vein systems are Mother Lode type fissure filling veins occupying reverse fault planes. The Calaveras vein lies west of the Bull vein, but the two veins converge to the north. A third vein system, the so-called "Flat veins", is comprised of fracture filling quartz veins occupying low-angle thrust fault planes.
The Bull vein is the largest vein and formed the prominent ridge of Carson Hill until it was removed during open pit mining operations. It consists of a coarse massive barren or nearly barren vein of white quartz striking N 20?- 80? W and dipping 60?-70? NE (Carpenter, c. 1999). To the south it splits into two branches, the Stanislaus vein on the west and the Adelaide vein on the east. The Bull vein rarely contained more than 1/7 of an ounce of gold, and was more often nearly barren (Knopf, 1929; Clark and Lydon, 1962). The maximum dilation of the Bull vein shear zone is where it bends to strike N 80? W, at which point the vein is 50 feet thick.
The Calaveras vein system strikes northwestward, dips 60? NE, and has an average thickness of 10 to 15 feet. It consists of quartz with interspersed talcose gouge, talc and sericite schist, and extensive masses of ankerite with mariposite. Country rock in the vicinity of the vein system is talcose and pyritic schist. Ore mined from the Calaveras vein in 1919-1920 yielded $3.88 per ton.
The Flat veins consist of a series of five gently-dipping veins striking N30? - 40?W and dip 20? to 30? NE. These younger veins occupy thrust fault fissures that intersect the Bull vein at various intervals resulting in a maximum of 120 feet of measured offset at the 1100-foot level.
Hanging Wall Rocks:
Hanging wall rocks consist of metavolcanics, principally meta-andesite, that strike N 20?- 40? W and dip 60?- 70? NE. These rocks are generally disturbed by the younger reverse faults, which parallel regional foliation and by the . Flat vein thrust faults. Adjacent to the Bull vein, hydrothermal alteration of the meta-andesite formed large low-grade ore bodies. The extent and distribution of alteration, mineralization, and emplacement of quartz-carbonate veining were controlled by dilation fractures established during fault movement, with alteration and mineralization diminishing with distance from the principal faults. Early quartz veins are typically crushed into unconsolidated breccias (Collum, 1990).
Footwall Rocks:
Southwest of the Bull vein, the footwall geology is more complex. About 100 feet from the Bull vein is a large body of serpentinized-peridotite with irregular dikes and inclusions of gabbro and diorite within and at the contact of the serpentinite. The serpentinite is relatively unaltered except where highly sheared. In such places it has been metamorphosed and altered to a talc-carbonate rock that contains insignificant gold (Collum, 1990). Sandwiched between the serpentine and the Bull vein are lenses of metasediments altered to carbonaceous pyrite-ankerite schist with abundant quartz stringers that yielded low-grade ore (Carpenter, c. 1999). Similar to the hanging wall ores, fracture enhanced permeability controlled the extent and distribution of alteration.
Alteration
Rock competency is the primary factor controlling alteration and mineralization, the best ore zones being intensely sheared meta-andesite and metasedimary wall rocks of the Bull and Calaveras veins. The more brittle metavolcanic and metasedimentary rocks fractured more easily and allowed more pervasive circulation of the mineralizing fluids within the dilation zones.
Carbonate metasomatism is typified by the nearly complete replacement of the wall rock by carbonate and sericite adjacent to the major veins, which diminishes away from the veins into unaltered meta-andesite or metasediments. These altered wall rocks provided most of the Carson Hill ore. Chlorite content increases gradually with distance from the veins. Pyrite concentration in the alteration halo is as high as 5 percent but decreases rapidly away from the veins (Collum, 1990). The size of the pyrite crystals are unusual for Mother Lode mines, often exceeding the size of a half dollar and ranging from 0.02 inch to 1.25 inch cubes. Assays of solitary large pyrite crystals averaged greater than 0.333 ounces per ton (Carpenter, c. 1999).
Ore Bodies and Ore Minerals:
Telluride minerals such as calaverite, sylvanite, hessite, and petzite were also recovered in the early shallow workings with both calaverite and melonite, a rare nickel telluride, being first found and described at Carson Hill. Lack of modern processes for the extraction of gold from tellurides prevented their being a major source of production.
While some gold is found in narrow zones of intensely sheared rock that are parallel to the regional foliation, most of the gold occurs in metasomatic alteration halos as disseminated auriferous pyrite within wall rocks where dilation zones were discordant to the regional foliation. Gold is also found in brittle fractures filled with quartz-carbonate veins. Coarse free-milling gold is also found in ore shoots where the Bull vein is cut by the yuonger Flat vein thrust faults (Collum, 1990).
Gold is everywhere associated with sulfide minerals, the principal sulfide being pyrite. Minor amounts of galena, chalcopyrite, tetrahedrite, molybdenite, and bornite occur with gold and pyrite in the quartz-carbonate veins. Gold is also found on grain boundaries of carbonate minerals, sericite, quartz, and pyrite. Gold, along with carbonate and sulfide minerals fill fractures in the vein quartz. In the veins, gold is up to 200 microns in size and is found on the grain boundaries of carbonate minerals and pyrite (Collum, 1990).
The most famous ore body was the so-called "Hanging Wall ore shoot" which occurred at a bend in the Bull vein in the Morgan and Melones mines. This shoot averaged 175 feet by 15 feet and averaged 0.5 ounce of gold per ton. This large body was mined from the surface to the 4550-foot level. The bulk of the ore consisted of auriferous pyritic schist. Other minerals present were chalcopyrite, galena, tetrahedrite, petzite, and molybdenite in various amounts. Ore from this shoot milled in 1919-1920 yielded $11 to $14 of gold per ton.
A lower-grade ore shoot was also found on the footwall at the bend in the Bull vein in the Morgan and Melones mines. This ore body extended from the surface to the 2179-foot level and consisted of pyrite-ankerite schist with abundant quartz stringers. Unlike the higher grade ore of the Hanging Wall shoot, the average value of this ore was $2 to $2.50 per ton (Knopf, 1929)
More conventional Mother Lode gold quartz ore shoots containing coarse native gold were encountered in the Morgan and Melones workings at the intersection of the Bull vein and the five Flat veins. The most productive ore shoot in this vein system was on the second lowest Flat vein between the 1100 and 1600-foot levels northeast of the Bull vein. Another Flat vein yielded the 195-pound "Calaveras Nugget."
Workings include surface and underground openings with an area of 355.327 HA and an overall depth of 1,386.84 meters. By 1865 the mine was developed to the 250 foot level, 400 foot length on several claims. Very extensive underground workings exist. There is a glory hole and winzes. There are numerous levels. The shrinkage stope method of mining was employed for ore removal.
The principal working entries for the consolidated Carson Hills mines were the Calaveras, Melones, and Morgan adits, the Morgan shaft, the underground Melones winze extending from the 1100-foot level to the 3000-foot level, and the lower winze extending from the 3000-foot to the 4500-foot level. The Melones adit was the main haulage way and was known as the 1100-foot level. These workings and the various levels are shown in longitudinal sections by Clark and Lydon (1962, page 48, figs. 6, 7). Cursory descriptions of the workings of some of the mines when individually operated are contained in the individual Mine discussions in the Exploration and Development History section of this record.
Several mining methods, both surface and underground, were employed at Carson Hill. Large quantities of ore were mined from glory holes north of the summit of Carson Hill. Ore from the great Morgan glory hole and others, as well as the adjacent Union shovel pit, was drawn through an ore pass to the 200-foot level and trammed to the Morgan ore pass, which was just east of the Morgan shaft, where it was delivered to the 100-foot haulage level. The ore was hauled by electric trolley locomotives to the mill (Clark and Lydon, 1962).
Much of the underground ore was mined from shrinkage stopes. The Flat veins were mined by open stoping with casual pillars. Square-set shrinkage stopes with subsequent waste filling were employed at the Calaveras Mine.
The two principal mills at Carson Hill were the 100-stamp Melones mill, which operated from 1902 to 1919, and the 30-stamp mill of the Carson Hill Gold Mining Corporation, which was in operation from about 1920 to 1926 and 1933 to 1942. At the Melones mill, ore was sent through a gyratory breakers, a crusher, and the stamps. The pulp was classified and concentrated on Wilfley tables and Frue vanners. Concentrates were sent to a cyanide plant. At the Carson Hill Gold Mining Corp. mill, the ore went through jaw crushers, stamps, and conical ball mills, and was concentrated on Deister tables. Concentrates were sent to the cyanide plant at the Melones mill. Mill tailings were delivered by flume to the disposal area just east of Coyote Creek (Clark and Lydon, 1962).
Operations in the 1980s consisted of open pit mining with extraction by heap leaching using a valley leach method, carbon in column adsorption, high temperature-low pressure glycol elution, and electrowinnowing.
Production data are found in: Clark, Wm. B. & P.A. Lydon (1962).
The Carson Hill district has produced over $27 million. The vast majority of this production ($26 million) came from the Carson Hill Mines group. Reported production from Carson Hill is about one million ounces of gold with an overall average grade of about 0.120 ounces/ton (Collum, 1990).
The Hanging Wall ore body was the richest in the mine averaging about 0.5 ounce of gold per ton, while most of the low-grade ores ran about 0.1 ounce per ton. The very low-grade ore mined in the 1980s by Grandview resources ran only 0.046-0.057 ounce per ton.
One blast was reported to have brought down $110,000 (period values) of Au. Nearby, $3,000,000 (period values) was taken from the Morgan claim in less than 2 years. The large ore body to 4,550 feet of depth yielded $5,000,000 (period values). Principal hanging wall ore body averaged 0.5 ounces Au/ton. Assays of solitary large pyrite crystals averaged greater than 0.333 ounces per ton. 195 pound mass of gold (Calaveras Nugget) found in quartz vein (largest ever in North America). The telluride minerals were never exploited due to extraction problems. The ore materials are: altered metavolcanic wall rocks containing disseminated auriferous pyrite.
USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10310598.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
Mineral list contains entries from the region specified including sub-localities30 valid minerals. 2 (TL) - type locality of valid minerals.
Detailed Mineral List:
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 1 - Elements | |||
---|---|---|---|
ⓘ | Gold | 1.AA.05 | Au |
ⓘ | Graphite | 1.CB.05a | C |
ⓘ | Tellurium | 1.CC.10 | Te |
Group 2 - Sulphides and Sulfosalts | |||
ⓘ | Hessite | 2.BA.60 | Ag2Te |
ⓘ | Petzite | 2.BA.75 | Ag3AuTe2 |
ⓘ | Sphalerite | 2.CB.05a | ZnS |
ⓘ | Coloradoite | 2.CB.05a | HgTe |
ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
ⓘ | Nickeline | 2.CC.05 | NiAs |
ⓘ | Millerite | 2.CC.20 | NiS |
ⓘ | Altaite | 2.CD.10 | PbTe |
ⓘ | Galena | 2.CD.10 | PbS |
ⓘ | Tetradymite | 2.DC.05 | Bi2Te2S |
ⓘ | Sylvanite | 2.EA.05 | AgAuTe4 |
ⓘ | Calaverite (TL) | 2.EA.10 | AuTe2 |
ⓘ | Melonite (TL) | 2.EA.20 | NiTe2 |
ⓘ | Molybdenite | 2.EA.30 | MoS2 |
ⓘ | Pyrite | 2.EB.05a | FeS2 |
ⓘ | Nagyágite ? | 2.HB.20a | [Pb3(Pb,Sb)3S6](Au,Te)3 |
Group 3 - Halides | |||
ⓘ | Chlorargyrite | 3.AA.15 | AgCl |
Group 4 - Oxides and Hydroxides | |||
ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
ⓘ | Quartz var. Rock Crystal | 4.DA.05 | SiO2 |
ⓘ | 4.DA.05 | SiO2 | |
ⓘ | var. Milky Quartz | 4.DA.05 | SiO2 |
ⓘ | Opal | 4.DA.10 | SiO2 · nH2O |
Group 5 - Nitrates and Carbonates | |||
ⓘ | Magnesite | 5.AB.05 | MgCO3 |
ⓘ | Ankerite | 5.AB.10 | Ca(Fe2+,Mg)(CO3)2 |
ⓘ | Dolomite | 5.AB.10 | CaMg(CO3)2 |
Group 9 - Silicates | |||
ⓘ | Augite | 9.DA.15 | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
ⓘ | Talc | 9.EC.05 | Mg3Si4O10(OH)2 |
ⓘ | Muscovite var. Phengite | 9.EC.15 | KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2 |
ⓘ | 9.EC.15 | KAl2(AlSi3O10)(OH)2 | |
ⓘ | var. Mariposite | 9.EC.15 | K(Al,Cr)2(Al,Si)4O10(OH)2 |
ⓘ | Albite | 9.FA.35 | Na(AlSi3O8) |
Unclassified | |||
ⓘ | 'Chlorite Group' | - | |
ⓘ | 'Amphibole Supergroup' | - | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
ⓘ | 'Apatite' ? | - | Ca5(PO4)3(Cl/F/OH) |
List of minerals for each chemical element
H | Hydrogen | |
---|---|---|
H | ⓘ Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
H | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
H | ⓘ Opal | SiO2 · nH2O |
H | ⓘ Muscovite var. Phengite | KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2 |
H | ⓘ Talc | Mg3Si4O10(OH)2 |
H | ⓘ Muscovite var. Mariposite | K(Al,Cr)2(Al,Si)4O10(OH)2 |
H | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
C | Carbon | |
C | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
C | ⓘ Dolomite | CaMg(CO3)2 |
C | ⓘ Graphite | C |
C | ⓘ Magnesite | MgCO3 |
O | Oxygen | |
O | ⓘ Albite | Na(AlSi3O8) |
O | ⓘ Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
O | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
O | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
O | ⓘ Dolomite | CaMg(CO3)2 |
O | ⓘ Magnesite | MgCO3 |
O | ⓘ Magnetite | Fe2+Fe23+O4 |
O | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
O | ⓘ Opal | SiO2 · nH2O |
O | ⓘ Muscovite var. Phengite | KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2 |
O | ⓘ Quartz | SiO2 |
O | ⓘ Talc | Mg3Si4O10(OH)2 |
O | ⓘ Quartz var. Rock Crystal | SiO2 |
O | ⓘ Quartz var. Milky Quartz | SiO2 |
O | ⓘ Muscovite var. Mariposite | K(Al,Cr)2(Al,Si)4O10(OH)2 |
O | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
F | Fluorine | |
F | ⓘ Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
F | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
Na | Sodium | |
Na | ⓘ Albite | Na(AlSi3O8) |
Mg | Magnesium | |
Mg | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
Mg | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
Mg | ⓘ Dolomite | CaMg(CO3)2 |
Mg | ⓘ Magnesite | MgCO3 |
Mg | ⓘ Muscovite var. Phengite | KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2 |
Mg | ⓘ Talc | Mg3Si4O10(OH)2 |
Al | Aluminium | |
Al | ⓘ Albite | Na(AlSi3O8) |
Al | ⓘ Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
Al | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
Al | ⓘ Muscovite var. Phengite | KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2 |
Al | ⓘ Muscovite var. Mariposite | K(Al,Cr)2(Al,Si)4O10(OH)2 |
Si | Silicon | |
Si | ⓘ Albite | Na(AlSi3O8) |
Si | ⓘ Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
Si | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
Si | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
Si | ⓘ Opal | SiO2 · nH2O |
Si | ⓘ Muscovite var. Phengite | KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2 |
Si | ⓘ Quartz | SiO2 |
Si | ⓘ Talc | Mg3Si4O10(OH)2 |
Si | ⓘ Quartz var. Rock Crystal | SiO2 |
Si | ⓘ Quartz var. Milky Quartz | SiO2 |
Si | ⓘ Muscovite var. Mariposite | K(Al,Cr)2(Al,Si)4O10(OH)2 |
P | Phosphorus | |
P | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
S | Sulfur | |
S | ⓘ Chalcopyrite | CuFeS2 |
S | ⓘ Galena | PbS |
S | ⓘ Millerite | NiS |
S | ⓘ Molybdenite | MoS2 |
S | ⓘ Nagyágite | [Pb3(Pb,Sb)3S6](Au,Te)3 |
S | ⓘ Pyrite | FeS2 |
S | ⓘ Sphalerite | ZnS |
S | ⓘ Tetradymite | Bi2Te2S |
Cl | Chlorine | |
Cl | ⓘ Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
Cl | ⓘ Chlorargyrite | AgCl |
Cl | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
K | Potassium | |
K | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
K | ⓘ Muscovite var. Phengite | KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2 |
K | ⓘ Muscovite var. Mariposite | K(Al,Cr)2(Al,Si)4O10(OH)2 |
Ca | Calcium | |
Ca | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
Ca | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
Ca | ⓘ Dolomite | CaMg(CO3)2 |
Ca | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
Ti | Titanium | |
Ti | ⓘ Amphibole Supergroup | AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2 |
Cr | Chromium | |
Cr | ⓘ Muscovite var. Mariposite | K(Al,Cr)2(Al,Si)4O10(OH)2 |
Fe | Iron | |
Fe | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
Fe | ⓘ Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
Fe | ⓘ Chalcopyrite | CuFeS2 |
Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
Fe | ⓘ Muscovite var. Phengite | KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2 |
Fe | ⓘ Pyrite | FeS2 |
Ni | Nickel | |
Ni | ⓘ Melonite | NiTe2 |
Ni | ⓘ Millerite | NiS |
Ni | ⓘ Nickeline | NiAs |
Cu | Copper | |
Cu | ⓘ Chalcopyrite | CuFeS2 |
Zn | Zinc | |
Zn | ⓘ Sphalerite | ZnS |
As | Arsenic | |
As | ⓘ Nickeline | NiAs |
Mo | Molybdenum | |
Mo | ⓘ Molybdenite | MoS2 |
Ag | Silver | |
Ag | ⓘ Chlorargyrite | AgCl |
Ag | ⓘ Hessite | Ag2Te |
Ag | ⓘ Petzite | Ag3AuTe2 |
Ag | ⓘ Sylvanite | AgAuTe4 |
Sb | Antimony | |
Sb | ⓘ Nagyágite | [Pb3(Pb,Sb)3S6](Au,Te)3 |
Te | Tellurium | |
Te | ⓘ Altaite | PbTe |
Te | ⓘ Calaverite | AuTe2 |
Te | ⓘ Coloradoite | HgTe |
Te | ⓘ Hessite | Ag2Te |
Te | ⓘ Melonite | NiTe2 |
Te | ⓘ Nagyágite | [Pb3(Pb,Sb)3S6](Au,Te)3 |
Te | ⓘ Petzite | Ag3AuTe2 |
Te | ⓘ Sylvanite | AgAuTe4 |
Te | ⓘ Tellurium | Te |
Te | ⓘ Tetradymite | Bi2Te2S |
Au | Gold | |
Au | ⓘ Calaverite | AuTe2 |
Au | ⓘ Gold | Au |
Au | ⓘ Nagyágite | [Pb3(Pb,Sb)3S6](Au,Te)3 |
Au | ⓘ Petzite | Ag3AuTe2 |
Au | ⓘ Sylvanite | AgAuTe4 |
Hg | Mercury | |
Hg | ⓘ Coloradoite | HgTe |
Pb | Lead | |
Pb | ⓘ Altaite | PbTe |
Pb | ⓘ Galena | PbS |
Pb | ⓘ Nagyágite | [Pb3(Pb,Sb)3S6](Au,Te)3 |
Bi | Bismuth | |
Bi | ⓘ Tetradymite | Bi2Te2S |
Other Databases
Link to USGS MRDS: | 10028998 |
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Localities in this Region
- California
- Calaveras County
- Carson Hill Mining District (Melones Mining District)
- Melones
- Carson Hill Gold Mining Company Mines (Carson Hill Mines)
- Melones
- Carson Hill Mining District (Melones Mining District)
- Calaveras County
- California
- Calaveras County
- Carson Hill Mining District (Melones Mining District)
- Melones
- Carson Hill Gold Mining Company Mines (Carson Hill Mines)
- Melones
- Carson Hill Mining District (Melones Mining District)
- Calaveras County
Other Regions, Features and Areas containing this locality
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