The discovery of platinum-bearing gold ore at the Boss mine in southern Nevada was brought to the attention of the Geological Survey by Mr F A Hale jr in September 1914 Some samples of the ore were submitted at the same time These were assayed and found to be extraordinarily rich in gold platinum and palladium of gold has been mined out between 1986 and 1994 [Ashley and Savage 2001] Figure 2 contains an example of the ore pulled from the ground though not from the Sierra Nevada range it represents what the miners were looking for Though mining corporations are still in existence today people no longer make prospecting into their

Comstock Lode

Comstock Lode rich deposit of silver in Nevada U S named for Henry Comstock part-owner of the property on which it was discovered in June 1859 ia City Washoe and other mining "boomtowns" quickly arose in the vicinity and in 10 years the lode's output justified establishment of a

Gold-rich pyrite formed by dissolution of dolomite and sulfidation of its contained Fe Where dissolution and replacement were complete ore-stage pyrite and other insoluble minerals were all that remained Locally these minerals accumulated as internal sediments in dissolution cavities to form ore with gold

Ore Deposits 2000 The Great Basin and Beyond Geological Society of Nevada Symposium Proceedings Reno/Sparks Nevada p 591–614 Fleet M E and Mumin A H 1997 Gold-bearing arsenian pyrite and mar-casite and arsenopyrite from Carlin trend gold deposits and laboratory syn-thesis American Mineralogist v 82 p 182–193

Jun 18 2018In Yavapai County near the center of the state gold is found in the Verde district in massive volcanogenic sulfide deposits containing copper silver gold and zine ore The United Verde mine and United Verde Extension mines were major mines that produced very rich massive sulfide deposits but the mines left behind an unknown amount of low

Nevada has a rich mining history and it currently ranks as the #1 producer of gold and silver in the U S Prospectors often use metal detectors and drywashers to recover gold in the arid desert Mining for gold in Nevada can be challenging but also rewarding as there is still plenty of gold

Mining Techniques of the Sierra Nevada and Gold Country

Mining Techniques of the Sierra Nevada and Gold Country by Snowy Range Reflections staff Panning for Gold Panning was the oldest and simplest way to separate gold from surrounding rock It was the most basic method to obtain placer gold

Goldfield History Goldfield was the site of a rare post 1900 major gold discovery in Nevada Most major discoveries in the lower 48 occurred before 1880 The ore initially was very rich spurring rapid growth of the town from 1902 until 1906 Goldfield became Nevada's largest city with over 30 000 people

Rich lead - silver ore from the famous mines of Wallace Idaho These mines have been mined to very deep levels below the surface Dark colored high grade ruby silver ore (pyrargyrite) from the rich Nevada Mines at Battle Mountain in Lander County

The Comstock Lode had been a minor gold placer district since 1849 In 1859 several prospectors discovered its rich lode silver ore and a great rush of miners poured eastward from California and established Gold Hill and ia City the principal towns of the Comstock Lode The district has been mostly inactive since the 1920s

Presented at the Geological Society of Nevada symposium on Geology and Ore deposits of the American Cordillera in Reno NV April 10- 13 1995 Dolostone-Hosted Gold-Rich Jasperoids and their Relationship to Copper Replacement Mantos LS A and Queen Creek Mines Superior District Arizona Guillermo A Pareja

Feb 20 2020The other largest gold deposits are prized sometimes for the sheer amount of gold they produce sometimes for the value of the gold they produce and often for both reasons The following areas include some of the biggest and most valued gold deposits Muruntau Grasberg Natalka Olympic Dam Sukhoi and the Sierra Nevada

The development of a simple classification scheme for gold deposits as presented here has been approached with a full appreciation that there are many difficulties associated with classification of ore deposits in general In the case of lode gold deposits contrasting classifications and nomenclatures have been arrived at historically

Specimen gold is generally found and retrieved from lode gold deposits These are usually high-grade occurences found in quartz veins or less commonly calcite Gold may also be found as specimens in or with iron oxides adularia (a low-temperature feldspar) sulfides and with other silica-rich minerals such as tourmaline amythest or clay minerals

Arizona's Placer Gold Deposits by County

Rich silver ore was discovered in the Peck mine in 1875 and in the following 10 years $1 to $11/2 million worth of silver was mined Other silver deposits were found in the late 1870's By 1885 the rich ore of the Peck mine was depleted and work in the succeeding years was mainly by lessees

Carlin epithermal and orogenic gold deposits today mined almost exclusively for their gold content have similar suites of anomalous trace elements that reflect similar low-salinity ore fluids and thermal conditions of metal transport and deposition Many of these trace elements are commonly referred to as critical or near-critical elements or metals and have been locally recovered

Backyard Traveler by Rich Moreno For decades I've written about ghost towns geological sites historic places and other stuff in Nevada and the West Mountain City is copper and a little silver and less gold uranium—in the mid-1950s but that fizzled within a few years when the ore deposits proved to be smaller than originally

The gold pan is the most necessary tool for new prospectors and well seasoned old pros It's the first and the last tool used in gold prospecting It helps to locate gold deposits and to check the value of gold ore being processed Older gold pans were produced by machines from metal or fashioned by hand from wood or even cow horns

Apr 30 2016Mining was what made Nevada a state Due to Nevada's rich gold and silver mines there was an increase in population which led Abraham Lincoln to announce it as the 36th state in 1864 Although silver was first discovered in 1859 it was Jim Butler's discovery of heavy deposits of silver in Tonopah that led []

(MRDS FILES) GOLD MAPS INCLUDE GPS DATA AND WERE PREPARED IN THE AREAS OF NEVADA IN WHICH THE MOST OCCURRENCE OF GOLD HAS BEEN FOUND AND ARE LISTED BELOW The best chance to find Gold in the creeks and washes placer deposits and prospects is to know where the occurrence of gold has been found

This region consists of individual deposits situated in the vicinity of the towns of Columbia Sonora and Tuttletown all between the Mother Lode Belt and the East Belt of gold mineralization The deposits were noteworthy for their small but very rich gold-quartz veins