copper placer deposit

New Mexico Gold DepositsKnow More

The copper deposits at Santa Rita were known and mined late in the 18th century and placer gold mining began as early as 1828 in the Ortiz Mountains south of Santa Fe In 1839 placer deposits were discovered farther south along the foot of the San Pedro Mountains...

placer depositsKnow More

Copper Member Nugget Shooter Members 0 1 post Share Download/buy placer deposits of location you want to hunt This will outline the history of the deposit give you information on the type of deposit and production and tell you something about your questions on host rock Joining a prospecting club will put you on ground that while...

Gold Deposits in Utah WildernessUSAKnow More

Placer Deposits A placer is any deposit of sand gravel or other natural material that has accumulated in a streambed on a beach or in residual alluvial deposits Due to its high density gold tends to gather and concentrate in placer deposits Gold is incredibly resistant to weathering and oxidation...

MAPS SHOWING PLATINUMKnow More

of PGE in placers of streams draining New Rambler copper- gold-PGE deposits in Wyoming The PGE-bearing placers in the conterminous United States have all been classified as placer gold-PGE deposits Yeend 1986 even where gold has not been reported to be present because either the gold to PGE ratio or the geologic environment is inappropriate...

MT MlLLlGAN COPPERKnow More

diamond drilling discovered additional gold-copper mineralization on the property Southern Star deposit - --- In mid-1990 Placer Dome Inc Placer Dome purchased from BP its share of the mineral claims that covered the Main and Southern Star deposits Placer Dome then acquired Continental Gold and in late 1990 Placer Dome resumed diamond...

11 PHASES OF A MINING PROJECTKnow More

of the placer mine 1133 Underground mining In underground mining a minimal amount of overburden is removed to gain access to the ore deposit Access to this ore deposit is gained by tunnels or shafts Tunnels or shafts lead to a more horizontal network of underground tunnels that directly access the ore In an underground mining...

Placer Deposits Tulameen River Similkameen MiningKnow More

Description At both type localities the Similkameen River and Tulameen River tulameenite is found in placer deposits derived from the weathering of the Late Triassic Tulameen zoned ultramafic complex Tulameenite occurs as minute white metallic grains associated with chalcopyrite chromite magnetite almandine spessartine hematite...

Copper Basin DistrictKnow More

The Aztec deposit in Copper Basin Wash sec 21 T 13 N R 3 W is in terrace gravels cemented by copper carbonate and oxide minerals Most of the large-scale placer mining was apparently concentrated in the southwestern part of the placer field during the early 1930 s the Forbach and Easton Co the Skull Valley Corp and the Gold Star...

New Mineral Deposit Models for Gold Phosphate Rare EarthKnow More

The updated models included six gold deposit types epithermal orogenic Carlin-like alkaline-related iron oxide copper gold and Precambrian paleoplacer sedimentary phosphorus 177 rare earth elements deposits and titanium-rare earth element placer deposits...

Mineral Deposits of Finland ScienceDirectKnow More

The post of commissioner of mines was founded in 1638 The Swedish government activated mineral exploration in Finland in the seventeenth century and during the Age of Utility in the eighteenth century Numerous small iron copper and lead occurrences were found as well as the larger Orijärvi copper deposit...

Economic geologyKnow More

Jan 10 2017 0183 32 2- Placer deposits Sedimentary placer deposits are mechanically formed concentrations of heavy durable minerals that may occur in transported soil or regolith colluvial in fluviatile and in coastal sediments 7 Placer deposits Placer deposits of economic importance are classified as residual eluvial colluvial fluviatile and coastal...

Copper Basin placers Copper Basin Wash Kirkland areaKnow More

Copper Basin placers Copper Basin Wash Kirkland area Copper Basin Mining District Sierra Prieta Mountains Yavapai Co Arizona USA A placer gold deposit area located North of Copper Basin Wash between Skull Valley and the Sierra Prieta Started about the 1880 s Reactivated about 1929 Placers were located all along Copper...

CLASSIFICATION OF DEPOSITSKnow More

A syngenetic mineral deposit is a deposit which formed at the same time as the rocks that enclose it Magmatic deposits are syngenetic in that the ore minerals crystallize from the same liquid that produces the silicate minerals which form the bulk of the intrusive -...

Topic 7 Placer Mineral DepositsKnow More

Placer deposits or simply placers are accumulations of valuable minerals concentrated in overburden in stream sediments or in beach materials by natural process...

Types of Copper Deposits in the World An Investor sKnow More

Sep 09 2020 0183 32 Copper mineralization occurs in many forms and in a variety of geological settingsAs such there are various factors to consider when determining the value of different types of copper deposits...

Detrital gold Grains as Indicators of Alkalic CopperKnow More

Figure 12 Characterization of hypogene and placer grains from The Copper Mountain area A and B Ag contents and Cu-Ag variation of placer and hypogene gold C data that the large placer deposit of the Bullion Pit was stratigraphically below the glacial deposits and hence gold grains from several sources could be present in recent...

Placer Gold Resources in New MexicoKnow More

Placer gold collected from multiple districts in New Mexico coupled with a broad database of previously analyzed placer gold samples indicate correlations between chemical signatures especially gold silver and copper and type of deposits ie Au-rich copper porphyry deposits Au porphyry deposits and epithermal deposits...

What does Placer deposit meanKnow More

Definition of Placer deposit in the Definitions dictionary Meaning of Placer deposit What does Placer deposit mean Information and translations of Placer deposit in the most comprehensive dictionary definitions resource on the web...

How Ore Deposits Are FormedKnow More

New computer simulations by geologists from ETH Zurich demonstrate how large copper and gold deposits are formed The enrichment process of these metals follows physical principles that are similar to the extraction of deep geothermal energy by hydraulic fracturing of the rock...

Placer depositKnow More

In geology a placer deposit or placer is an accumulation of valuable minerals formed by gravity separation from a specific source rock during sedimentary process The name is from the Spanish word placer meaning alluvial sand Placer mining is an important source of gold and was the main technique used in the early years of many gold rushes including the California Gold Rush...

Recent and potential metallic mining projects in WisconsinKnow More

Feb 11 2020 0183 32 The Lynne deposit was discovered in 1990 by Noranda Exploration and is located on forestry land owned by Oneida County within the town of Lynne It is primarily a zinc sulfide ore with significant lead and silver and minor amounts of gold and copper The deposit is estimated to be approximately 56 million tons recoverable by open pit mining...

ORE DEPOSIT TYPES AND THEIR PRIMARY EXPRESSIONSKnow More

Iron oxide copper gold deposits Olympic Dam Ernest Henry Tennant Creek Cu-U-Au-Ag-REE S-F Cu-Au-Bi Syn-deformational hydrothermal and replacement deposits Metamorphic copper deposits Mount Isa Nifty Metasediment-hosted polymetallic deposits Elura CSA Peak New Cobar Hera Tritton Replacement deposits possibly magmatically related...

Introduction to Mineral Deposit ModelsKnow More

Mineral Deposit Models Dennis P Cox and Donald A Singer Editors INTRODUCTION By Dennis P Cox Paul B Barton and Donald A Singer The US Geological Survey has a long and distinguished history in assessing the mineral resources of the public domain and that role remains active today in programs designed to assess the mineral resources of the lands administered by the US Bureau of...

ARIZONA PLACER GOLD DEPOSITSKnow More

A few copper deposits were also worked before 1900 Wilson and others 1934 p 164-165 Total gold production of the district through 1959 was about 17 000 ounces most of which was mined before 1900 Small placer deposits in Harquahala Gulch were worked in 1886 and 1887 and the lodes of the Bonanza and Golden Eagle mines from which...

Prospecting Placer Gold DepositsKnow More

Table of ContentsPlacer MiningGeneral Geology of Placer-Gold DepositsCharacteristics of Placer Gold Prospecting for placer gold except perhaps in the case of buried placers is the simplest form of prospecting Gold platinum and tin are the principal metallic minerals won from placers but gold alloyed with varying percentages of silver is the only metal that has been recovered in...

The Geology of Rare Earth ElementsKnow More

The iron-oxide copper-gold type of deposit has been recognized as a distinct deposit type only since the discovery of the giant Olympic Dam deposit in South Australia in the 1980s The Olympic Dam deposit is unusual in that it contains large amounts of rare earth elements and uranium...

Placer deposit geology BritannicaKnow More

Placer deposit natural concentration of heavy minerals caused by the effect of gravity on moving particl When heavy stable minerals are freed from their matrix by weathering processes they are slowly washed downslope into streams that quickly winnow the lighter matrix Thus the heavy minerals...

Porphyry copper deposit mineralogy BritannicaKnow More

Porphyry copper deposit large body of rock typically a porphyry of granitic to dioritic composition that has been fractured on a fine scale and through which chalcopyrite and other copper minerals are disseminatedPorphyry copper deposits commonly contain hundreds of millions of metric tons of ore that averages a fraction of 1 percent copper by weight although they are low-grade the...

Placer Gold Deposits of ArizonaKnow More

Eighty-seven placer districts in Arizona are estimated to have produced a minimum of 564 052 ounces of placer gold from 1774 to 1968 The location areal extent past production mining history and probable lode source summarized for each district are based on information obtained from a wide variety of published reports relating to placer deposits...

Mike Higbee s Prospectors CacheKnow More

Go to the southeast 4 miles in the upper part of Gold Gulch and you will find many small placer deposits Dos Cabezas district 18 miles southeast of Wilcox in the Dos Cabezas mountains had many copper lead silver mines with a by product of gold...