.
Location: 1 km E from Jalahari, India
OMC House, Unit-4PO Box 34BhubaneswarIndia751001
Stay on top of the latest gold discoveries. Examine the latest updates on drilling outcomes spanning various commodities.
Mining scale, mining and mill throughput capaciites.Full profiles of select mines and projects.
Shaft depth, mining scale, backfill type and mill throughput data.Full profiles of select mines and projects.
Equipment type, model, size and quantity.Full profiles of select mines and projects.
Camp size, mine location and contacts.Full profiles of select mines and projects.
The lron ore deposit of Jilling Langalota Iron Block leasehold area forms a part of 'Horseshoe Synclinorium', near to the closure of the major Synclinorium. The major lithological units of the area comprised of mainly Banded Iron Formation (BIF) with several major granitic intrusive e.g. Singhbhum, Bonai, Mayurbhanj Granite etc. along with the volcano Sedimentary sequences. The rocks of the Iron Ore Group underwent the green schist facies of metamorphism and were characterized by the presence of some schistose rocks in the area. The metamorphic rocks observed In the area are mostly the product of regional metamorphism.Broadly three different major lithological Groups are observed in the area. They usually consist of Basic Volcanics, Green Stone, the argillaceous and Tuffaceous suite of rocks along with the cherty quartzite & variegated shale, containing workable deposit of Iron & Manganiferous are with stray occurrence of calcareous rocks.The area is a part of the westerly dipping castern limb of the NNE plunging asymmetric Synclinorium, The general trend of the rock is N-S with a variation between NNW-SSE to NNESSW with rolling dip. The structure of the rock of this area is complicated due to several fold movements. The axis of the major fold is N-S. The ore bodies are laid down In the Syn- form with their axes plunging due to south and north.The rock formation of the area is meta-Volcanics and sequence of meta-sedimentary rocks belongs to koira group of iron ore series of Precambrian age.The different litho units of Jilling Langalotta Iron Ore Block are given below.Lower Shale FormationThe Lower Shale Formation (LSF) overlies the volcanic formation and underlies the sedimentaries of BIF conformably. This formation mainly comprises of variegated shale members underlying brown and grey shales, The different colored shale members exhibit gradational contact with cach other. This unit Is considered as weathering product of volcanics. This shale at many places contains weil-preserved relics of vesicles and Amygdules, which obviously suggest its primary Tuffaceous/voicanic parentage. The members of this formation often exhibit fine lamination inherited from parent Tuff/Tuffites. Close interbedded interrelationship of lava flows with the overtying tuff indicates a sub- aqueous origín for the lava. Besides, the associated tuffs and ash beds show evidence of having becn laid in water.Upper shale formation The cessation of the chemical serdimentation is marked by the beginning of deposition of argillaccous group of rocks known as Upper Shale Formation (USF). This formation is divided into two members. Lower member is purple, brown and grey;thinly laminated and encloses lenticular /irregular shaped bodies of manganese ores.The upper member of USF is yellow, maroon and white coloured and devoid of manganese minoralization. The presence of laminations indicates its deposition in quitc water environment.Banded Iron Formation (BHJ & BHQ) On the basis of field disposition and broad composition of different members, the BIf in the study area can be classified broadly in to following three categories:• Banded Hematite Jasper: BHJ is red /buff in color and show distinct banding. Often the bands are gradational. The jasper and hematite are more or less similar in thickness, Such litho units are predominantly seen in this area;• Banded Chert/Ferruginous Chert: The exposures of Banded Chert/ Ferruginous Chert are seen in this area. Often banding is recognized by the fine color difference. They are very poor in iron content;• Bonded Hematite Shale (BHS): The Banded Ferruginous Shale is often overlain by banded hematite jasper, This unit is characteristically banded with iron minerals and shale. This is locally called as transitional ore, It is persistently noticed throughout the Iron ore mines. In this unit the banding is thinner and sharper than those in BHJ;• Banded Shale (BS)/Ferruqinous Shale (FS: Ferruginous shale / Bandod shale is a type of shale that is rich in iron. In the study area the rock typically exhibits a reddish tint if the iron present is ferric or a green tint if the iron is ferrous. Dark gray or black shale, however, often results from the presence of appreciable manganese content;• Laterites: Most part of the area is covered by laterite of various types. The laterites have been developed mostly over the shale unit of the area and depending upon the composition of the shale, different types of laterites have been developed. The shale rich in alumina has given rise to bauxitic laterite and those rich in iron have developed ferruginous laterites respectively. Ferruginous laterite occuples most of the high lands in the vicinity and is wide-spread;• Alluvial Soil: The low lying areas are filled up mostly with alluvial soil.
- subscription is required.
