#1MAGNESITES OF BOSNIA AND HERZEGOVINA Ri TUZLA Rudarski institut d.d.Tuzla Rudarska 72 75000 Tuzla Bosnia and Herzegovina Phone: +387 35 321 800 Fax: +387 35 282 700 e-mail:[email protected]#2. Magnesite regions Kladusa Magnesite deposits of BiH are genetically and spatially related to the zones of ultrabasic rocks (peridotite and serpentinite) in the Dinarides. There are 3 magnesite regions in BiH that are related to the eponymous ultrabazic massifs Krupa Bos. Petrovac Magnesites of Pastirevo and Kozara Stratinsk BANJA LUKA Ljeskove Sanski Most Bonter Majda Dobie Kotor Varol Grad ko Jes Brocan Bagodol Drinovca Magnesites of Krivaja-Konjuh massif 1.Banjaluka region; 2.Prnjavor region; 3.Mala Ukrina region 4. Teslić region; 5.Moševac region; 6. Novi Šeher region; 7.Žepče region; 8.Bajvati region; 9.Dištica region; 10.Olovo region; 11.Kladanj region Magnesites of the western part of Zlatibor massif sovado Konjo MOSTAR Blogaj Rolin Boa. Somec Domaljevi Odtak Podnovij Kakanj Dobrinje GoreTuzla TUZLA Zivinice Durdevik 10 Kladan Visoko Senbegovici Ozten Semizor Sokolac SARAJEV NEVESINJE Ri TUZLA Boa Rata Batkovn Podlep Bratunacy Visegr Rogatica Gorazde Huckovic Ustikolina Miljevine 'Kalinovik#3Ri Magnesite regions TUZLA Magnesite regions consists mainly of more magnesite fields which are related to the certain oriented systems of faults and cracks that are occuring allong regional faults. Minor structure elements are magnesite ore bodies like ore veins. These magnesite regions are poorly explored and magnesite production so far only exists in Kladanj region, which makes this region the most interesting one#444°20 49 10 Magnesite region of Kladanj Ri TUZLA Magnesite region "Kladanj" is located about 16 km northwest of the town of Kladanj, related to the propagation of "Krivaja-Konjuh" ophiolite complex as one of the largest in the Dinarides ophiolitic zone. This ophiolite complex is dominantly formed by peridotites, serpentinated peridotites and serpentinites. Istočno od Griniča $40 east of Greenwich Hamber 45 Mg 05 Medor 80 Azt BBab 50 22 BBab Konjuh 1327 Azt 42 55 Sqse 1540 Oloval Magnezite mine Azt Kladanj 530 Bukonci 1137 BBab Azt 40 4900 1163 Kamensk dermoel Cunista 95 1400 40. Azt BB Papal 1029 Pab Brate evići Paljevac Milankowch 8545 50 730 55 10218-L 45. J2.3? Sandstone, shale, cherts 30 BBab 761 โ T₂ N Limestone Jelačid Pab BBab So 30 BB Jelono br 40 Gojakovići 35 Bẞab Spilite 9 - Peridotite Pyroxenite Se Serpentinite Klinozoisite-amphybolite Grdina Azt schist Gojsalići Plahavid Kiabani 20 Jza? Bratile be Adp Amphybolite and amphybolite schist Diopside-amphybolite schist 1106 Gare Sqse Quartz-serizite schist Kovačić 55 60#5Magnesite region of Kladanj Ri TUZLA - Despite the fact that there are 4 magnesite fields in magnesite region of Kladanj (Miljevica, Zeničica, Drinjača i Srebrenica), significant magnesite deposits are located only in two of them (Miljevica and Zeničica) situated in eastern part of the Konjuh mountain. - Geological studies have shown that all magnesite deposits and occurrences in this region are concentrated in an area of about 34 km². 1209 | Z-2 |Z-5 Konjuh 4328 | M-11. M-2014) M-9-10 1 M-18" 1/M-20(+3) / M-B / M-7 M-20(2) |M-14 1178 /M-6a M-18a 12-9 M-18 M-23 M-Magnesite occurences Miljevica Z-Magnesite occurences Zeničica 100#6Apperiences of magnesite ore The most common apperiences of magnesite ore in Kladanj region are ore veins, which often branch out into apophyses of different lenght. Alternation of ore veins basic elements are shown in table: lenght thickness strike angle 75-500 m 0,5-5 m 250-280 dip engle 50°-80° Ri TUZLA#7Apperiences of magnesite ore veins Ri TUZLA These magnesite veins are formed by hydrothermal processes in the way that hydrothermal solutions, in it's ascending movement along the cracks and faults, have enriched itselfs with magnesium from the ultrabasic rocks, and later this magnesium in a form of bicarbonate has beed deposited in upper parts of ultramafic massif. Some authors these hydrothermal processes links to the tertiary volcanism, and due to that prevails opinion that these magnesite deposits are tertiary age. 1070 1060 1050 4 1040- 1030- 1020 1010- 1000+ 9.90- 980- M-110 | M-11 94 - 32 M-9 970- 1.5 H-960 H-960 960- 950 940 930- BJ 920- 4 H-920 910 900 890- 880- 870- 2.35 50.00 m UM-S 920 M-90 Legend: Lherzolite Serpentinated lherzolite with tiny magnesite veins HHA Serpentinite Serpentinite with cracks and tiny magnesite veins R-3 B9-IV Serpentine breccia Magnesite-serpentinite breccia with over 30% of magnesite Magnesite Sepiolite and quartz Tranchs Mining horizons Boreholes Cross-section Concession field boundaries#8• Mineral associations Mineralogical studies have determined following minerals in mineral associacion of magnesite ore: singenetic minerals: magnesite, dolomite, calcite and quartz, epigenetic minerals: neomagnesite, dolomite, calcite, silicates (quartz, opal, calcedony), serpentinite minerals (sepiolite, parasepiolite, chrysotile), chlorite, iron hydroxides, manganese oxides and clay minerals, mechanical inpurities: serpentinite, quartz, magnetite, chromite, clay minerals, biotite, piroxenite, amphibol, feldspar Ri TUZLA#9Magnesite mine "Kladanj❞ Existence of magnesite ore in the region of Kladanj was known even before the II World War. Ri TUZLA Geological exploration have been performed since the 60's of the last century until 1992, when outbreak of the war interrupted the exploration as well as exploitation of magnesite. Today, after more than 20 years, research has continued with reopening of magnesite mine "Kladanj " by the company "Rudar " Ltd. Tuzla. The latest data on magnesite region "Kladanj" refere to the study on magnesite reserves from 2014, which covered two ore veins (M-9 and M-11) on 75ha of exploration area.#10"Kladanj mine" ore reserves Ri TUZLA Magnesite reserves (t) Vein A B C₁ C₂ BVB C1VB Total by vein (t) M-9 4.391 34.497 15.147 19.291 73.326 M-9a M-11 15.001 M-11d 18.794 12.603 8.561 28.466 19.481 5.924 11.715 3.503 54.959 3.034 56.905 3.503 M-11e M-11f 15.800 11.466 15.095 6.123 38.276 1.295 23.218 Total (t) 19.392 109.272 64.820 53.669 3.034 250.187 by category Total (t) of A+B+C₁ 193.484 category Concentration degree of ore reserves is 87 m³/m² with exploration degree of 66,5%.#11"Kladanj mine" ore quality Medium weighted chemical composition of the ore veins Ri TUZLA Vein SiO2 CaO MgO Al2O3 Fe2O3 LOI. M-9 2,38 2,98 44,58 0,56 0,62 48,89 M-9a 3,28 2,08 44,87 0,50 0,50 48,55 M-11 3,68 2,70 43,88 0,60 0,82 47,61 M-11d 3,89 2,03 44,52 0,35 0,67 49,09 M-11e 2,73 1,53 44,93 0,71 0,40 48,91 M11f 2,16 2,27 44,22 0,58 0,87 49,17 Magnesite ore quality of the "Kladanj" mine SiO2 CaO MgO Al2O3 Fe2O3 LOI. % % % % % % 3,08 2,56 44,43 0,56 0,66 48,45 Based on the results of chemical analysis can be concluded that magnesites from "Kladanj❞ region are characterized by high and uneven content of harmful components, primarily SiO 2 with respect to the requirements for the application of raw magnesite in industry of fire resistant materials.#12Proposals for further actions 1. Finding the optimal methods of ore enrichment in order to reduce content of SiO2. 2. Geological explorations with an aime to increase magnesite reserves of an existing mine in approved concesion area. 3. Regional exploration in "Konjuh-Krivaja" peridotite massif in order to define new magnesite bearing locations. Ri TUZLA#13THANKS FOR YOUR rudarski institut ATTENTION! www.rudarski-institut.com.ba Ri TUZLA