Conditions of formation of the iron-containing minerals, Hällefors silver mines, Bergslagen, Sweden

1986 ◽  
Vol 50 (355) ◽  
pp. 101-110 ◽  
Author(s):  
A. W. Jasiński
Keyword(s):  
Aqueous Solutions ◽  
Iron Oxides ◽  
Iron Ore ◽  
Silver Deposit ◽  
Ore Deposit ◽  
Iron Minerals ◽  
Sulphide Precipitation ◽  
Iron Ore Deposit ◽  
Two Stages

AbstractThe Hällefors silver deposit is regarded as a volcanogenic-exhalative iron ore deposit with dispersed amounts of Ag-Pb-Zn (±Cu) which has undergone secondary remobilization leading to the concentration of sulphides and sulphosalts. Based on data from the iron oxides and sulphides, the sulphide-sulphosalt mineralization is believed to have been formed in two stages. The first is characterized by the ranges 573-473 K and 2.25–1.5 kbar, higher gradient of changes of log aS2 with temperature and mostly sulphide precipitation; the second by the ranges 473–443 K, lower gradient of changes of log aS2 and mainly sulphosalt deposition. Assuming the precipitation was from fluids and aqueous solutions, possible conditions of formation of some of the iron minerals have been determined.

Exploration of Siling iron ore deposit in Shanxi Province

2019 ◽  
Vol 1 (2) ◽  
pp. 37-41
Author(s):  
Su Kangjie ◽  
Yuan Ya
Keyword(s):  
Iron Ore ◽  
Shanxi Province ◽  
Ore Deposit ◽  
Iron Ore Deposit

THE PILOT KNOB IRON ORE DEPOSIT IN SOUTHEAST MISSOURI, USA: A HIGH-TO-LOW TEMPERATURE MAGMATIC-HYDROTHERMAL CONTINUUM

2019 ◽  
Author(s):  
Bolorchimeg Nanzad ◽  
◽  
Marek Locmelis ◽  
Brandon James Sullivan ◽  
Ryan Mathur
Keyword(s):  
Low Temperature ◽  
Iron Ore ◽  
Ore Deposit ◽  
Southeast Missouri ◽  
Iron Ore Deposit

Three-dimensional geomechanical model of the Tashtagol iron-ore deposit

1998 ◽  
Vol 34 (3) ◽  
pp. 209-216 ◽  
Author(s):  
L. A. Nazarova ◽  
L. A. Nazarov ◽  
A. V. Leont'ev
Keyword(s):  
Iron Ore ◽  
Three Dimensional ◽  
Geomechanical Model ◽  
Ore Deposit ◽  
Iron Ore Deposit

Resource and reserve analysis of Hasançelebi Iron Ore deposit, Turkey

2018 ◽  
pp. 199-202
Author(s):  
B. Elevli ◽  
A. Demirci ◽  
A. Dogan ◽  
G. Onal
Keyword(s):  
Iron Ore ◽  
Ore Deposit ◽  
Iron Ore Deposit

scholarly journals Geophysical surveys of rock mass status of iron ore deposit with combined deep – opencast mining zone

2020 ◽  
Vol 177 ◽  
pp. 02006
Author(s):  
Andrey Vedernikov ◽  
Pavel Zuev ◽  
Danila Grigoriev
Keyword(s):  
Iron Ore ◽  
Diagnostic Method ◽  
Underground Mining ◽  
Opencast Mining ◽  
Combined Method ◽  
Ore Deposit ◽  
Seismic Profiling ◽  
Geophysical Surveys ◽  
Iron Ore Deposit ◽  
Underground Method

Often in deposits developed by underground mining, the task is to control the state of the earth's surface within the mine field. And this problem is even more acute in the case of combined open-underground mining. The Goroblagodatskoe iron ore deposit has been developed by a combined method for more than 40 years. The article describes the methodology and results of applying the geophysical diagnostic method at a mining facility developed by a combined open-underground method - the spectral seismic profiling method (SSP). The application of this method is justified. This method has shown its sufficient efficiency in terms of time costs and sufficient reliability for local studies. The results of field and desk studies are obtained, an assessment of the nature of the object is given, which justifies the use of further measures for the safe development of the object.

scholarly journals Petrology and genesis of the Bhainskati iron ore deposit of Palpa District, western Nepal

2013 ◽  
Vol 15 ◽  
pp. 63-68
Author(s):  
Sujan Devkota ◽  
Lalu Prasad Paudel
Keyword(s):  
Marine Environment ◽  
Mineral Assemblage ◽  
Iron Ore ◽  
Ore Deposit ◽  
Shallow Marine ◽  
Shallow Marine Environment ◽  
Long Time ◽  
Iron Ore Deposit ◽  
Petrographic Study ◽  
Oolitic Ironstone

The Bhainskati Formation of the Tansen Group in the Palpa area is known for hematite iron ore deposit for long time. A prominent band of hematite of about 1-2 m thickness and extending >5 km was identified in the upper part of the Bhainskati Formation in the present study. The band is repeated three times in the area by folding and faulting. Petrographic study shows that it is oolitic ironstone of sedimentary origin. Main minerals in the band are hematite, goethite, quartz, calcite, siderite and albite. Hematite content varies considerably among samples and occurs mainly as oolite and cement. The Bhainskati ironstone with its ferrous mineral assemblage and well-rounded texture of the ooids suggests shallow marine environment (prodeltaic to estuarine) with reduced clastic input. DOI: http://dx.doi.org/10.3126/bdg.v15i0.7418 Bulletin of the Department of Geology, Vol. 15, 2012, pp. 63-68

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