Geology and ore deposits of the San Rafael River mining area, Emery County, Utah

1976 ◽  
Keyword(s):  
Mining Area ◽  
Ore Deposits ◽  
San Rafael ◽  
San Rafael River

Metallogenic Series Classification for the Iron Belt of Northern Hebei and Shanxi to Western Liaoning

2012 ◽  
Vol 616-618 ◽  
pp. 185-189
Author(s):  
Dao Qing Zhou ◽  
Zheng Guo Fan ◽  
Lin Tan ◽  
Xu Zhao Huang ◽  
Bao Bao Cao ◽  
...  
Keyword(s):  
Large Scale ◽  
Iron Ore ◽  
Mining Area ◽  
Ore Deposits ◽  
Liaoning Province ◽  
Geological Condition ◽  
Western Liaoning ◽  
Genetic Types ◽  
Reference Information ◽  
Geological Conditions

The iron belt of northern Hebei and Shanxi provinces to western Liaoning province locates in great geological conditions and hosts various types iron mines, so the prospecting potential is huge. The found iron ore with industrial value have sedimentary metamorphic mines with large scale, and followed by magmatic, sedimentary, and contact-metasomatic ore deposits, etc. The iron mineralization of different types is great affiliated with the geotectonic environment of different geological periods, sedimentation, magmatic conditions, that behaviors different mineralization types corresponding to different geological periods in time, behaviors different iron mining area corresponding to different structural location in the space, consists of the iron metallogenic series coupled to the different time and the different genetic types in North China. Based on the analysis to the distribution regularity, ore-controlling factors and metallogenic series of iron mine, we deeped the regional ore-controlling geological condition and metallogenic regularity of iron ore, provided important reference information for regional exploration.

The Paleoproterozoic Kristineberg mining area, northern Sweden: Results from integrated 3D geophysical and geologic modeling, and implications for targeting ore deposits

Geophysics ◽  
2009 ◽  
Vol 74 (1) ◽  
pp. B9-B22 ◽  
Author(s):  
Alireza Malehmir ◽  
Hans Thunehed ◽  
Ari Tryggvason
Keyword(s):  
Base Metal ◽  
Volcanic Rocks ◽  
Mining Area ◽  
Gold Deposits ◽  
Ore Deposits ◽  
Granitic Rocks ◽  
Gravity Modeling ◽  
Northern Sweden ◽  
Seismic Profiles ◽  
Geologic Model

The Kristineberg mining area in the western part of the Paleoproterozoic Skellefte Ore District, northern Sweden, is well known for its base-metal and recent gold discoveries. A pilot 3D geologic model has been constructed on a crustal scale, covering an area of [Formula: see text] to depths of [Formula: see text]. Constrained 3D inverse and forward gravity modeling have been performed to confirm and refine previous modeling along seismic profiles using mainly 2.5D techniques. The 3D inverse gravity modeling was geared to generating isodensity surfaces that enclose regions within the model of anomalous density contrast. The 3D forward gravity modeling was conducted to include faulting and folding systems that are difficult to include in the inversion. The 3D geologic model supports many previous interpretations but also reveals new features of the regional geology that are important for future targeting of base-metal and gold deposits. The margins of a thick granite in the south dip steeply inward, suggesting the possibility of room to accommodate another large base-metal deposit if the granitic rocks are juxtaposed with volcanic rocks at depth. Gravity modeling also suggests the observed Bouguer gravity high within the western metasediments can be explained by a large mafic intrusion that has dioritic to tonalitic composition and no significant magnetic signature. Because mafic-ultramafic intrusions within metasediments can indicate gold, this interpretation suggests the western metasediments have a high gold potential.

scholarly journals Total and Leached Arsenic, Mercury and Antimony in the Mining Waste Dumping Area of Abbadia San Salvatore (Mt. Amiata, Central Italy)

2021 ◽  
Vol 11 (17) ◽  
pp. 7893
Author(s):  
Federica Meloni ◽  
Giordano Montegrossi ◽  
Marta Lazzaroni ◽  
Daniele Rappuoli ◽  
Barbara Nisi ◽  
...  
Keyword(s):  
Meteoric Water ◽  
Saturation Index ◽  
Central Italy ◽  
Great Majority ◽  
Mining Area ◽  
Ore Deposits ◽  
Mining Waste ◽  
Mine Wastes ◽  
Roasting Process ◽  
Northern Portion

Total and leached Arsenic, Mercury and Antimony were determined in the topsoils developed on the mining waste dumping area of Le Lame (Mt. Amiata, central Italy) where the post-processing Hg-rich ore deposits from the mining area of Abbadia San Salvatore were stored. The concentrations of As, Hg and Sb were up to 610, 1910 and 1610 mg kg−1, respectively, while those in the leachates (carried out with CO2-saturated MilliQ water to simulate the meteoric water conditions) were up to 102, 7 and 661 μg·L−1, respectively. Most aqueous solutions were characterized by Hg content <0.1 μg·L−1. This is likely suggesting that the mine wastes (locally named “rosticci”) were possibly resulting from an efficient roasting process that favored either the removal or inertization of Hg operated by the Gould furnaces and located in the southern sector of Le Lame. The highest values of total and leachate mercury were indeed mostly found in the northern portion where the “rosticci”, derived by the less efficient and older Spirek-Cermak furnaces, was accumulated. The saturation index was positive for the great majority of leachate samples in Fe-oxy-hydroxides, e.g., ferrihydrite, hematite, magnetite, goethite, and Al-hydroxides (boehmite and gibbsite). On the other hand, As- and Hg-compounds were shown to be systematically undersaturated, whereas oversaturation in tripuhyte (FeSbO4) and romeite (Ca2Sb2O7) was evidenced. The Eh-pH diagrams for the three chalcophile elements were also constructed and computed and updated according to the recent literature data.

scholarly journals IMPORTANCE OF OLISTOSTROME MEMBER FOR METALLOGENY OF LJUBIJA IRON ORE DEPOSITS

2016 ◽  
Vol 1 (13) ◽  
Author(s):  
Aleksandar Grubić ◽  
Ranko Cvijić ◽  
Aleksej Milošević ◽  
Miodrag Čelebić
Keyword(s):  
Iron Ore ◽  
Mining Area ◽  
Ore Deposits ◽  
Special Importance ◽  
Iron Ore Deposits ◽  
Stratigraphic Position

Ljubija mining area is built of more formations that belong to the Carboniferous, Permian, Triassic andCenozoic. From all of these, only two are metalliferous to iron: Javorik formation with olistostromemember and Neogene-Quaternary of Prijedor basin. The first includes primary siderite and ankeritepartially limonitised ore and in the second only redeposited limonite (limonite pieces and dust, knownunder the commercial name "brand"). Appearance of iron is also in other members of Javorik formationand other formations, but these are just thin veins. They have no significance for the economicexploitation but are an important element in the interpretation of metallogeny in the region. Thesefindings came from many years of fieldwork and synthesis of all published and unpublished data relatedto iron ore in this area.Therefore, this work gives special importance to olistostrome member, its stratigraphic position andmetallogenic characteristics.

scholarly journals Contribution of geophysics for the characterization of ore deposits, case of the Bouarfa mine, Morocco.

2018 ◽  
Vol 149 ◽  
pp. 02076
Author(s):  
Bahi Anas ◽  
Akhssas Ahmed ◽  
Ouadif Latifa ◽  
Ahmed Ait Errouhi ◽  
Kawtar Ouatiki
Keyword(s):  
Magnetic Field ◽  
Geophysical Methods ◽  
Mining Area ◽  
Ore Deposits ◽  
Magnetic Method ◽  
Total Magnetic Field ◽  
Regional Effects ◽  
Reduction To The Pole ◽  
Anomalous Bodies

Geophysical methods are one of the best ways to determine the potential of a mining area. Indeed, for the prospection of metalliferous deposits, the magnetic method remains essential as it makes it possible to characterize the extent and the depth of the anomalous bodies present in the prospected zone, mainly due to their reaction with the values of the total magnetic field. Thus, for the manganese mining zone of Bouarfa and more exactly Hammraouet, the genesis of the deposit is such that the manganese is generally associated with ferruginous minerals and clearly affect the total magnetic field. That said, the raw results obtained must imperatively be subjected to corrections to only keep the effect of the anomalous bodies on the magnetic field. Hence, we must proceed with the correction of the daytime effect then we eliminate the regional effects to get the map of the residual anomaly and finally we perform a reduction to the pole that will allow us to have well individualized and unipolar anomalies and thus allowing us to locate precisely the potentially mineralized axes. The synthesis of the various maps obtained by spatial interpolation of the data recorded in situ and corrected allows us to locate areas of mining interest and to determine the different tectonic phenomena that took place in our study area. In time, these maps will serve us to guide the subsequent mechanical surveys to confirm the results obtained by geophysical methods.

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