هل ستصبح شريكنا القادم ؟
Gold mining deposit report for "Deposit #Usgs10100942" (# ... utilizing a single known shaft that extends down to a maximum depth of 549 meters (1,800 feet). The mined ore mainly comprises galena, sphalerite, and gold, while the waste material consists primarily of calcite and quartz. ... DEPOSITS ARE QUARTZ BODIES UP TO 10 FEET THICK IN HIRST ...
WhatsApp: +86 18221755073
The mine has primarily produced a relatively small amount of ore. Mining activities at the site are carried out underground, with the presence of a single known shaft. ... Antimony Metallic Tertiary; Gold Metallic Tertiary; Molybdenum Metallic Tertiary; Zinc Metallic Tertiary; Deposit. TWO VEINS, 18 INCHES TO 2 FEET THICK, ARE FILLED WITH ...
WhatsApp: +86 18221755073
The gravels are quartzitic and contain coarse gold. One of the gravel deposits is as much as 300 feet thick and covered with clay and sand. The quartz veins are lenticular and occur either in the slate or near the slate-granodiorite contact. The Ore bodies contain free gold with pyrite, arsenopyrite, and galena.
WhatsApp: +86 18221755073
The Tertiary placer channels are large cobble conglomerates cemented with a ferruginous sand matrix containing free gold. Gold is recovered as fine flakes and large nuggets (see Picture 2). The channels vary in …
WhatsApp: +86 18221755073
The drill-defined part of the Goldfield Main mineralized area has the following dimensions: 3,600 ft long, 1,000 ft down dip and open, and averages 100 ft thick. Mineralization at the Main District is structurally controlled in zones about 50-100 feet thick. The major ore host in the Goldfield District is porphyritic rhyodacite.
WhatsApp: +86 18221755073
The ore body had a tabular shape and was approximately 50 meters (164 feet) thick, situated at a depth of 50 meters (164 feet) beneath the surface. Geologically, the Kori Kollu Mine is situated in an area characterized by dacite, a type of volcanic rock, which formed during the Serravallian stage approximately 13.82 to 11.63 million years ago.
WhatsApp: +86 18221755073
deposit. mineralized albite-diorite sills intruded into slate-graywacke sequence; gold and sulfides disseminated in quartz-calcite veins 0. 1 in to 6 feet thick and in horses of slate; ore shoots 60-100 feet wide in 20 to 40 degree dipping bands concentrated along slate footwall or in swells of albite-diorite sills; pyrite is dominant sulfide, minor pyrrhotite, molybdenite, chalcopyrite ...
WhatsApp: +86 18221755073
The ore deposits are silver and gold-bearing quartz veins 3 to 30 feet thick in the earlier Tertiary (?) volcanic rocks. The ore minerals are gold, finely divided argentite, and pyrite in a gangue of quartz, carbonates, adularia, and barite (Lindgren, 1906a).
WhatsApp: +86 18221755073
Ore Deposits The quartz veins usually are a few feet thick and range from white to dark smoky gray in color. Smoky vein quartz is characteristic of some of the mines in this district. The ore contains free gold, which often is coarse, and varying amounts of sulfides. Appreciable quantities of high-grade ore have been recovered.
WhatsApp: +86 18221755073
The unconformable blanket of Tertiary rocks, which is 4,000 to 6,000 feet thick, consists of, from oldest to youngest, the Telluride Conglomerate, San Juan Tuff, Silverton Volcanic Series, and …
WhatsApp: +86 18221755073
Gold mining deposit report for "Deposit #13290" (#13290) in Chelan County, Washington. ... workings. There is only one known shaft in the mine, and the subsurface length extends up to 2,134 meters (7,000 feet). The ore that was extracted from this mine primarily consisted of magnetite, hematite, and malachite, while the waste material was ...
WhatsApp: +86 18221755073
The rocks of the district are Tertiary volcanics, primarily andesite, several thousands of feet thick (Stoddard and Carpenter, 1950, p. 76). Quartz veins, striking east, contain gold, silver, and small amounts of copper in a quartz gangue. SILVER CITY DISTRICT. The Silver City district is in the western tip of Lyon County, in T. 16 N., R. 21 E.
WhatsApp: +86 18221755073
Gold mining deposit report for "Deposit #25325" (#25325) in Alpine County, ... Copper Metallic Tertiary; Lead Metallic Tertiary; Notes. ALTHOUGH REPORTED ASSAYS WERE HIGH, COMPLEX ORES WERE DIFFICULT TO TREAT. ... VEIN OF SILICIFIED BRECCIA A FEW FEET THICK W ORE BODIES. Materials. Minerals or other materials present in the mine. …
WhatsApp: +86 18221755073
Two masses of Tertiary quartz monzonite are the most abundant bedrock of the Chalk Creek district: the Mount Pomeroy, which is the older, and the Mount Princeton. ... Most of the ore mined was from pyritic quartz veins which range from mere stringers to lodes 50 feet thick and more than a mile long. The Mary Murphy vein has been worked through ...
WhatsApp: +86 18221755073
Overlying the bedrock are patches of Tertiary and Quarternary gravels. Ore Deposits A number of northwest-striking quartz veins occur principally in the greenstones, slates, and granodiorite. Some of the veins are as much as 20 feet thick The ore contains free gold, auriferous pyrite, and smaller amounts of other sulfides. The surface ores were ...
WhatsApp: +86 18221755073
A few tungsten ores yield gold, silver, copper, lead, or zinc as minor by-products, and conversely, some ... middle or late Tertiary age occur in several western states, as do hot-spring, lacustrine, and placer de- ... quartz vein 1 to 15 feet thick. Other veins in range have been worked intermittently with small production. Wilson, 1941. ...
WhatsApp: +86 18221755073
The gold occurs in small lenticular ore bodies 10 to 20 feet above the base of the Martin Limestone (Devonian) and adjacent to faults. Gold, malachite, and chrysocolla occur in a gangue of iron and manganese oxides and quartz. Silver is associated with the copper minerals and gold (Short and others, 1943, p. 138).
WhatsApp: +86 18221755073
The entire gold production of Catron County through 1959 came from the Mogollon district. The Mogollon Range, in which the ore deposits are found, is composed of a section more than …
WhatsApp: +86 18221755073
The Clifton (Gold Hill) district is in the Clifton Hills near the Utah-Nevada boundary. Its ore deposits are varied and contain a wide range of valuable metal constituents. Besides gold, the deposits have yielded significant amounts of copper, lead, silver, and smaller amounts of tungsten, bismuth, molybdenum, and arsenic (Nolan, 1935a, p. 119).
WhatsApp: +86 18221755073
The ore body is characterized as having a tabular shape and being approximately 30 meters (100 feet) thick. The surrounding host rock in this area is predominantly composed of andesite. In terms of the geological and geographic features of the area, the Table Mountain Mine is situated within the Mexican Highland region of the Intermontane Plateaus.
WhatsApp: +86 18221755073
Contain masses of gouge and quartz lenses as much as 1.5 feet thick. Sulfides sparse. Production: About $100,000. ... Tertiary: Antimony Tertiary: Gold Tertiary: Tungsten. Location. State: Oregon County: Baker . ... Ore Mills of the West; Home Sweet Home – Miner's Cabins of the Frontier West;
WhatsApp: +86 18221755073
ore materials: native gold-fine-coarse gold and nuggets. ... (2-4 feet thick ), but often rich, with pay streaks yielding as much as $1. 55-$2. 50 per ton. ... the discovery of these modern quaternary placers in the american river at sutter's mill sparked the california gold rush. tertiary channel gravels it has been estimated that 40 percent ...
WhatsApp: +86 18221755073
In places these rocks are overlain by Tertiary channel gravels capped by rhyolite and andesite. Ore Deposits. Several major gold-quartz vein systems traverse the district. In the west portion one system extends northwest along a granodiorite-metasedimentary rock contact. ... but in places a few are as much as 15 feet thick. The ore contains ...
WhatsApp: +86 18221755073
In terms of geological information, as of 1978, there was a documented tabular-shaped ore body within the mine. This ore body was approximately 1,000 meters (3,280 feet) long, 200 meters (656 feet) wide, and 1 meter (4 feet) thick.
WhatsApp: +86 18221755073
Gold mining deposit report for "Deposit #1188" (#1188) in Sitka County, ... Lead Metallic Tertiary; ... UP TO 10 FEET THICK, MOST 2-4 FEET THICK. LESS THAN 3% OF ORE ARE METALLIC MINERALS, INCLUDING PYRITE, ARSENOPYRITE, SPHALERITE, GALENA, CHALCOPYRITE, AND FREE GOLD FOUND IN VEIN QUARTZ, IN LAYERS OF WALL …
WhatsApp: +86 18221755073
gold grade of ore has a positive correlation with the abundance of nw-striking joints. the ore-hosting tuff consists of a 400 to 500 foot thick non-welded base, a densely welded central portion about 800 feet thick, and a less densely welded vapor-phase altered top that is 75-100 feet thick.
WhatsApp: +86 18221755073
The following summary of the geology and ore deposits of the Rochester district is from a more detailed account by Knopf (1924, p. 9-58). The oldest rocks in the district are felsitic trachytes and keratophyres 5,000 feet thick, composing the Rochester Trachyte, of Triassic age. Overlying this is a sequence of rhyolite flows also of Triassic age.
WhatsApp: +86 18221755073
ments. Paleozoic sediments, 2,500 feet thick, Cambrian to Permian in age, rest unconformably on the pre-Cambrian. Granodiorite intrusives and rhyolite dikes are assigned to the Cretaceous or early Tertiary. Tertiary (Pliocene) volcanics-flows, necks, and dikes-occur in numer-ous localities. The lacustrian Verde formation, 1,500 feet thick, is ...
WhatsApp: +86 18221755073
In places these rocks are overlain by Tertiary channel gravels capped by rhyolite and andesite. Ore Deposits Several major gold-quartz vein systems traverse the district. In the west portion one system extends northwest along a granodiorite …
WhatsApp: +86 18221755073
TWO VEINS, 18 INCHES TO 2 FEET THICK, ARE FILLED WITH CRUSHED ANDESITE AND QUARTZ. RICH SILVER ORE (AS MUCH AS 100 OZ/TON) OCCURS IN BUNCHES IN …
WhatsApp: +86 18221755073
