التفاصيل البيبلوغرافية
| العنوان: |
The mineral composition of the Burkland Cu-sulphide deposit at Zinkgruvan, Sweden : a supplementary study |
| المؤلفون: |
Andersen, Christine |
| بيانات النشر: |
Lunds universitet/Geologiska institutionen |
| سنة النشر: |
2009 |
| المجموعة: |
Lund University Publications Student Papers (LUP-SP) |
| مصطلحات موضوعية: |
Zinkgruvan, Bergslagen, Åmmeberg-deposit, Burkland Cu-mineralisation, chalcopyrite, hydrothermalcopper sulphide, VMS, SEDEX copper sulphide, SEDEX, Åmmeberg-malmförekomst, Burkland kopparmineralisering, kopparkis, hydrotermal kopparsulfid, Earth and Environmental Sciences |
| الوصف: |
The Zinkgruvan Mining AB, situated in south-central Sweden in Örebro County, south-east of Åmmeberg, plans to expand their production on a massive, carbonate hosted copper-sulphide ore deposit, the Burkland Cu-mineralization in the eastern part of Knalla. At present mainly Zn-Pb-Ag are mined. The deformed Cu-mineralization belongs to the south-western Bergslagen ore province. It is of Paleoproterozoic age, hosted by supracrustal, metavolcanic- and metasedimentary rocks, mainly serpentine- and dolomitic marble as well as skarn. Hydrothermal ore forming processes are suggested for the formation of the Zinkgruvan deposit. It is described as a Volcanic Massive Sulphide (VMS) and a volcanic SEDimentary EXhalative (SEDEX) type. In order to judge the economic value of the Cu-ore deposit, the mineralogy and possible variation in chemical composition of the opaque minerals as well as the mineral distribution have been investigated. Also the distribution of problematic elements such as Sb, As, Hg and Bi were studied. These can lead to fines during the processing of Cuore. Ten thin sections from the most ore rich 18m section of the drillcore DBH2992 have been analysed under a reflected light and in a scanning electron microscope. This study is a complement to the master thesis of Bjärnborg (2009) on the same topic to test and strengthen her findings through extra samples and analysis. The major ore mineral found in this study is chalcopyrite (CuFeS2), mostly occurring in aggregates. Other common ore minerals are sphalerite, pentlandite and magnetite both in aggregates and as disseminated grains. Cubanite is often found intimately intergrown as lamellea in chalcopyrite or as almost massive grains. Minor ore minerals found are breithauptite, cobaltite and pyrrhotite/mackinawite. The latter two minerals could not definitely be discriminated. The problematic elements Sb and As are found in nine different minerals. None of the major or common ore phases contain Sb or As. The Sb carrying minor ore phase breithauptite (NiSb) ... |
| نوع الوثيقة: |
other/unknown material |
| وصف الملف: |
application/pdf |
| اللغة: |
English |
| العلاقة: |
http://lup.lub.lu.se/student-papers/record/2302011Test |
| الإتاحة: |
http://lup.lub.lu.se/student-papers/record/2302011Test |
| رقم الانضمام: |
edsbas.25FD5C32 |
| قاعدة البيانات: |
BASE |
