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Gold ore tailings can be used as a siliceous raw material for cement production. The cement phases are 3CaO·SiO 2, 2CaO·SiO 2, 3CaO·Al 2 O 3, and 4CaO·Al 2 O 3 ·Fe 2 …
To proceed in mechanical activation, feldspar powders were ground for 200 min [24], iron ore residues were ground for 90 min [21], muscovite was ground for 200 min [25], gold mine and siliceous ...
With non carbonaceous ore containing gold in the metallic state, a similar experiment showed only eight per cent dissolution of gold. ... If the AA assay on the roasted sample shows less than eighty per cent extraction of gold, the refractoriness is due to gold lockup in the siliceous gangue. Work by A. S. Radtke and B. J. Scheiner (1970) of ...
This deposit is localized in the frontal zone of a large thrust and bears gold-sulfide mineralization (fine-grained sulfides and submicron gold in siliceous-carbonate rocks and jasperoids). It is characterized by the presence of brecciated rocks and high contents of Hg, Sb, Ba, and Fe both in ores and in the host rocks.
lated by the midnineteenth century: the ore-magma theory involving siliceous melts, the magmatic-hydrothermal theory, secretion theories, and abyssal theo ries. The ultimate source of the gold, other metals, and gangue elements (minerals) in gold deposits is mentioned only briefly in these early theories and usually with.little elaboration.
They are well known in the Sagan-Sair and Urik-Khitoi gold ore zones, the Ospa ore cluster, and the Dibi ore field. At the Yuzhnoe, Dinamitnoe, and Zelenoe deposits and the Sagan-Sair, Zhil'noe ...
Intended Use: AMIS0337 can be used to check analysis of samples of siliceous gold ores, with a similar grade and matrix. It is a matrix matched Certified Reference Material, fit for use as control samples in routine assay ... AMIS0337 is a commissioned CRM made using ore sourced from the AngloGold Ashanti Limited - Navachab Gold Mine, situated ...
A large number of gold ore tailings pose a serious threat to the ecological environment. At the same time, with the increase of cement demand, the siliceous raw material used for cement production is in short supply and its price is rising. In this study, the gold ore tailings were used a siliceous raw material for cement production. The results proved that the clinker phases of the …
That some gold bearing ore bodies appear as is if they have been deposited by replacement, but this is not the case for the California quartz veins. The Diadem lode, southwest of Meadow Valley, in Plumas County, appears to be a bed of …
Twenty-four gold mineralized zones have been recognized in the Sawayaerdun ore deposit. Among these, the up to 4-km-long and 200-m wide No. IV mineralized zone is …
Effect of mechanical grinding on pozzolanic activity and hydration properties of siliceous gold ore tailings. G. Yao Qing Liu Junxiang Wang Peng Wu X. Lyu. Materials Science, Engineering. Journal of Cleaner Production. 2019; 106. Save. ... The disposal of gold ore tailings (GTs) has been a very difficult problem for a long time. ...
Its gold mineralization shows many typomorphic features of Carlin-type gold ores: localiza- tion in the frontal zones of large thrusts, in dolomite com- plexes with siltstone …
Map of the principal mines of the siliceous gold ore region of Bald Mountain and Ruby Basin, Whitewood Mining Distirct, Lawrence County, So. Dako., 1895 / compiled from official and private surveys and other sources by Frank S. Peck., Deputy United States
The Shewushan gold deposit is located 16 km southwest of Jiayu County, Hubei Province, eastern China, which is the largest lateritic gold deposit in Asia, consisting of a series of mineralized faults containing gold grades of 1.0-19.5 g/t set within a …
How Gold Ore is Formed · Genesis. The origin of mineral veins, including those in which gold is contained, has long been discussed by geologists. ... and derives an auriferous quartz vein from an igneous siliceous dyke. The magmatic concentration is succeeded by aqueous concentration acting underground by dissolution and precipitation, and ...
The formation of geopolymers from mine tailings using cold-bonding processes is known to be possible. Numerous cold-bonding methods exist, but the hydrothermal processes involving high temperatures and pressures in the presence of steam have been found to be the most ideal. This paper presents the results of successful preliminary studies to apply …
It is suggested that the gold tailings used in the cement are blended with silica fume and C-type fly ash to obtain higher compressive strength values. Innovative methodology …
Descriptions of major ore deposits world wide. The Mount Morgan copper-gold deposit is located on the Tropic of Capricorn in the coastal ranges of eastern Queensland, 36 km north-west of Rockhampton. The deposit was discovered in 1882 and was mined by underground and glory hole methods to 1927, and as an open pit from 1932, up to 1981 when the ore was exhausted.
Solutions to this problem typically propose the use of larger sample sizes, typically 30 g or greater. 3 Furthermore, when using acid digestions, in the absence of hydrofluoric acid, low recoveries have been associated with the encapsulation of gold in the siliceous rock. 1,2,4,5 Here, it is presumed that gold is secreted within a refractory matrix, making it inaccessible to …
Gold usually occurs as intergrowths with sulfides in quartz veins or as individual dendritic isometric grains 0.1 to 3–7 mm in size. The gold fineness of the studied sample (300 gold grains) varies from 250 to 1000. The gold distribution histogram (Fig. 4) shows three peaks of gold fineness: 47–52, 67–68.5, and 88–90 wt.% (Fig. 4, a).
The pozzolanic activity of siliceous gold ore tailings is gradually improved with increasing grinding time, and the aluminosilicate mineral muscovite possesses higher …
Ore deposits in the Cement Creek area are quartz-pyrite-gold veins characteristic of the Gold King mine, tungsten-bearing quartz veins, and chimney deposits rich in lead, silver, and a little gold (D. J. Varnes and W. S. Burbank, in Vanderwilt and others, 1947, p. 435, 436).
Effect of mechanical grinding on pozzolanic activity and hydration properties of siliceous gold ore tailings. J. Clean. Prod., 217 (2019), pp. 12-21. View PDF View article View in Scopus Google Scholar. Young and Yang, 2019. G. Young, M. Yang. Preparation and characterization of Portland cement clinker from iron ore tailings.
At MacLeod Cockshutt Gold Mines, Ltd., the cost of roasting in 1941- 1942 was 32 cents per ton milled or $1.25 per ton of ore roasted, while at Lake Shore mines for the same year the cost was about 80 cents per ton roasted.
ore types are siliceous, pyritic, arsenic, and oxidized ore. Normal ores are composed of dolomite, illite, quartz, and carbonaceous materials (with organic carbon content ranging from …
Effect of mechanical grinding on pozzolanic activity and hydration properties of siliceous gold ore tailings. ... Hydration kinetics and properties of cement blended with mechanically activated gold mine ... Yao, Geng Wang, Qiang Wang, Zhiming Wang, Junxiang and Lyu, Xianjun 2020. Activation of hydration properties of iron ore tailings and ...
Gold ore tailings were used as a siliceous raw material for cement production. The clinker mineralogical phases and cement's hydration products were not affected by gold ore tailings. The burnability of cement raw materials was improved by gold ore tailings. Statement of novelty: gold ore tailings are the solid wastes produced by mineral ...
As can be seen from Table 2, there is little difference between the specific surface areas of the carbonaceous gold ore and the NaOH and benzene leach residues, whereas the surface areas of the carbon extract and the siliceous res- TABLE 3 Infrared analysis of the Prestea carbonaceous gold ore and its extracts Sample Absorption band (cm ...
Abstract This paper deals with characteristics of silicon isotope compositions and siliceous cathodoluminescence of host rocks, ores and hydrothermal silicified quartz of the Carlin‐type ore deposits in the Yunnan‐Guizhou‐Guangxi triangle area. The study shows that primary silicified quartz is nonluminescent but quartz in host rocks and secondary silicified …
A large number of gold ore tailings pose a serious threat to the ecological environment. At the same time, with the increase of cement demand, the siliceous raw material used for cement production is in short supply and its price is rising. In this study, the gold ore tailings were used a siliceous raw material for cement production.
Supplementary cementitious material (SCM) plays an important role in blended cement, and the effect of the particle size and morphology of siliceous supplementary …
Abstract: The gold content in siliceous deposits formed from geothermal waters at the Hatchobaru geothermal power station in central Kyushu, Japan, was determined by inductively coupled plasma quadrupole mass spectrometry (ICP–MS). It ranges from 1.3 to 4.6 mg/kg. The highest gold content was obtained from the siliceous deposit formed from acidic …
In an effort to increase resource recycling and minimize waste, mining and mineral processing waste should be of widespread concern in the scientific community owing to their large emissions [1], [2].Mining and mineral processing waste remains one of the world's leading waste sources [3], [4], [5], [6].The environmental challenges associated with the mining and mineral …
The gold-bearing ore was heated as a thick slurry of ore, air, water and limestone in large pressure chambers. The slurry interacted with thiosulfate and a fine, bead-like material that collects the gold. At full capacity, 13,400 tons of ore can be processed daily, with leaching taking place simultaneously in two sets of seven tanks.
Gold solubility, speciation, and partitioning as a function of HCl in the brine-silicate melt-metallic gold system at 800°C and 100 MPa. Geochim Cosmochim Acta, 66: 3719–3732 …