Advanced search options

Advanced Search Options 🞨

Browse by author name (“Author name starts with…”).

Find ETDs with:

in
/  
in
/  
in
/  
in

Written in Published in Earliest date Latest date

Sorted by

Results per page:

Sorted by: relevance · author · university · dateNew search

You searched for subject:(Mineral Iron Ores). Showing records 1 – 2 of 2 total matches.

Search Limiters

Last 2 Years | English Only

No search limiters apply to these results.

▼ Search Limiters


University of Oulu

1. Korkalo, T. (Tuomo). Gold and copper deposits in Central Lapland, Northern Finland, with special reference to their exploration and exploitation.

Degree: 2006, University of Oulu

Abstract At least 30 gold deposits verified by means of one or more notable diamond drill hole results have been discovered in Central Lapland in the last 20 years, and these can be divided spatially into groups, between which the metal composition varies. The deposits contain varying amounts of sulphides and sulpharsenides as well as gold. Pyrite is the most common sulphide mineral in the gold deposits associated with volcanic rocks, and usually pyrrhotite in those associated with sedimentary rocks. The principal sulphide minerals in those connected with banded iron formations are pyrite and arsenopyrite. A separate group of formations consists of the palaeoplacer gold deposits associated with the molasse-like quartzites and conglomerates of Central Lapland. The iron oxide-copper-gold deposits of Central Lapland, which are a significant potential source of copper and gold, are mostly associated with skarn rocks at the eastern contact of the acidic intrusive rocks of Western Lapland and with skarn rocks occurring as interlayers in metavolcanic and metasedimentary rocks. The gold deposits that have led to actual mining activities in Central Lapland are Saattopora in Kittilä and Pahtavaara in Sodankylä. Apart from the Laurinoja iron oxide-copper-gold ore body in Kolari, copper concentrate has been produced from the Saattopora gold ore deposit and the Pahtavuoma copper ore deposit. Only one gold ore in Central Lapland is being actively exploited at present, that of the Pahtavaara mine, which was worked in 1995–2000 and reopened in 2003. The best starting point for successful gold ore exploration in Central Lapland can be achieved through a thorough knowledge of the deformation zones and their structures and alteration processes and the application of geochemical methods. Magnetic surveys can be of help in identifying and locating deformation zones of interest for exploration purposes and the majority of the associated shear zones and faults. Ore-critical zones usually feature graphite-bearing schists and iron sulphide-bearing sequences that can be traced by electrical methods and used as marker zones to verify the results of geological mapping. Geological, geophysical and geochemical techniques have been used in great diversity, and in particular till geochemistry and bedrock drilling have been methods by which the gold and copper deposits in Central Lapland have been discovered. A total of 7.6 million tonnes of gold and copper ores, including the Laurinoja iron oxide-copper-gold ore, were extracted in Central Lapland over the period 1982–2000. The resulting production of gold during this period was 10 800 kg, together with 21 000 tonnes of copper in concentrates and 4500 kg of silver. The gold and copper ores have been concentrated by gravity separation and/or flotation, since the ores so far taken into production has been of the free milling type. However, a substantial proportion of the deposits in the area contain copper, nickel, cobalt and arsenic as well, in the form of sulphides or sulpharsenides, so that…

Subjects/Keywords: Finland; Lapland; concentrating; copper ores; exploitation; exploration; feasibility study; geochemistry; geophysics; gold ores; hydrothermal alteration; iron ores; milling; mineral deposits; mining; schist belt; zinc deposits

Record DetailsSimilar RecordsGoogle PlusoneFacebookTwitterCiteULikeMendeleyreddit

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Korkalo, T. (. (2006). Gold and copper deposits in Central Lapland, Northern Finland, with special reference to their exploration and exploitation. (Doctoral Dissertation). University of Oulu. Retrieved from http://urn.fi/urn:isbn:951428108X

Chicago Manual of Style (16th Edition):

Korkalo, T (Tuomo). “Gold and copper deposits in Central Lapland, Northern Finland, with special reference to their exploration and exploitation.” 2006. Doctoral Dissertation, University of Oulu. Accessed October 25, 2020. http://urn.fi/urn:isbn:951428108X.

MLA Handbook (7th Edition):

Korkalo, T (Tuomo). “Gold and copper deposits in Central Lapland, Northern Finland, with special reference to their exploration and exploitation.” 2006. Web. 25 Oct 2020.

Vancouver:

Korkalo T(. Gold and copper deposits in Central Lapland, Northern Finland, with special reference to their exploration and exploitation. [Internet] [Doctoral dissertation]. University of Oulu; 2006. [cited 2020 Oct 25]. Available from: http://urn.fi/urn:isbn:951428108X.

Council of Science Editors:

Korkalo T(. Gold and copper deposits in Central Lapland, Northern Finland, with special reference to their exploration and exploitation. [Doctoral Dissertation]. University of Oulu; 2006. Available from: http://urn.fi/urn:isbn:951428108X

2. Adlreburg, Nickolas Pappas. To Make Iron of Iron : A Comprehensive Analytical Study of Spade Shaped Iron Bars.

Degree: Archaeological Research Laboratory, 2017, Stockholm University

This thesis aims to provide adequate analytical information on the spade shaped iron bars of Norrland and central Sweden. While their significance has been thoroughly debated for decades, analytical research on them has been confined to cases of single artefacts or theoretical interpretations of their value, meaning and origin. In this study a comprehensive approach is taken into consideration. Based on X-Ray fluorescence (XRF), scanning electron microscopy (SEM) and metallographical analysis this thesis seeks to facilitate new interpretations on quality, production centres and usage based on analytical results. Aiming to settle some of the long lasting questions regarding the artefacts while producing results which can further the discussion by raising new questions, previously unasked.

Subjects/Keywords: Archaeological Science; Archaeometallurgy; Spade Shaped Iron Bars; X-Ray Fluorescence (XRF); Scanning Electron Microscopy (SEM); Metallography; Swedish Archaeology; Archaeology in Norrland; Scandinavian Iron Age; Nordic Iron Age; Roman Iron Age; Migration Period; Vendel Period; Prehistoric Metallurgy; Slag; Iron Bar; Currency Bar; Bloomery; Bloom Iron; Bog Iron; Limonite; Mineral Iron Ores; Hematite; Magnetite Phosphoric Iron/Steel; Prehistoric Steel; Ferrite; Pearlite; Nickel; Cobalt; Phosphorus; Arsenic; Magnesium; Sulfur; Manganese; Norrland; Middle Norrland; Uppland; Gästrikland; Hälsingland; Medelpad; Jämtland; Södermanland; Helgö; Torsåker; Gåcksätter; Alborga; Offerdal; Selånger; Villberga; Arbrå; Laborativ Arkeologi; Arkeometallurgi; Spadformiga Ämnesjärn; Röntgenfluorescens (XRF); Svepelektronmikroskop (SEM); Metallografi; Svensk Arkeologi; Norrländsk Arkeologi; Förnnordisk Arkeologi; Skandinavisk Järnålder; Nordisk Järnålder; Fornnordisk Järnålder; Romersk Järnålder; Folkvandringstiden; Vendeltiden; Forhistorisk Metallurgi; Slaget; Ämnesjärn; Blästerugn; Blästa; Myrmalm; Sjömalm; Limonit; Bergmalm; Hematit; Magnetit; Fosforisk Järn/Stål; Förhistorisk Stål; Ferrit; Pearlit; Nickel; Kobolt; Fosfor; Arsen; Magnesium; Svavel; Mangan; Norrland; Mellannorrland; Uppland; Gästrikland; Hälsingland; Medelpad; Jämtland; Södermanland; Helgö; Torsåker; Gåcksätter; Alborga; Offerdal; Selånger; Villberga; Arbrå; Archaeology; Arkeologi

…perhaps not as labour intensive as mining mineral iron ores (described later in this… …research showcased that bogs and lakes in Sweden were rich in iron ores, which often contained 6… …177, 1996). The use Meteoric iron was prevalent. The identification of such ores is… …x29;. In the case of mineral iron ore, the procurement process is rather straight forward… …Östersund (e.g. SHM 2784 has a sister spade shaped iron bar JLM 980 curated in Östersund)… 

Record DetailsSimilar RecordsGoogle PlusoneFacebookTwitterCiteULikeMendeleyreddit

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Adlreburg, N. P. (2017). To Make Iron of Iron : A Comprehensive Analytical Study of Spade Shaped Iron Bars. (Thesis). Stockholm University. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-145694

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Adlreburg, Nickolas Pappas. “To Make Iron of Iron : A Comprehensive Analytical Study of Spade Shaped Iron Bars.” 2017. Thesis, Stockholm University. Accessed October 25, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-145694.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Adlreburg, Nickolas Pappas. “To Make Iron of Iron : A Comprehensive Analytical Study of Spade Shaped Iron Bars.” 2017. Web. 25 Oct 2020.

Vancouver:

Adlreburg NP. To Make Iron of Iron : A Comprehensive Analytical Study of Spade Shaped Iron Bars. [Internet] [Thesis]. Stockholm University; 2017. [cited 2020 Oct 25]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-145694.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Adlreburg NP. To Make Iron of Iron : A Comprehensive Analytical Study of Spade Shaped Iron Bars. [Thesis]. Stockholm University; 2017. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-145694

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

.