Exploration Done by Directorate of Geology and Mining, Assam
Total Page:16
File Type:pdf, Size:1020Kb
TABLE-1 Exploration done by Directorate of Geology and Mining, Assam: 1.Coal Deposits: S L. NAME OF RESERVE DISTRICT LOCATION ACCESSIBILITY OCCURRENCE CHEMICAL COMPOSITION / QUALITY N THE DEPOSIT (million tons) O. 1. MAKUM COAL Tinsukia Namdang Colliery Can be approached by both rail 29 Km long and 4.6 Km wide area. Good quality with low ash and moisture. Total Reserve: 316 FIELD (271600N and roadways. Railway line is High sulphur Million tones. 955100 linked with the Tinsukia junction. Coal bearing rocks belongs to the E) Tikak Parbat and Bargolai Formation. Moisture : 2 - 9% Proved Reserve: Borgolai Colliery Sulphur: 1 - 4% 305 Million Tones.. (271600N Fixed carbon: 42 - to 60% 955100 Volatile Matter: 38 – 51% E) Calorific Value: 5035 – 7950 Kcal. / Kg. Ledo Colliery (271800N 955100 E) Tipong Colliery (271600N 955100 E) 2. DILLI Partly in Latitude: 275000 The coalfield is connected by a 12 Area of 40 km. long and 0.50 km. Good with low ash but high moisture and Total Reserve is JEYPORE Dibrugarh to 27830 Km road with Namrup railway Wide. high sulphur around 54 Million COALFIELD district N station. The coalfield can also be Four distinct geological horizons Upper coal bearing horizon: tones. (Joypore approached from Sivsagar via belonging to Tikak Parbat Formation Moisture : 3.7-6.7%; Ash: 5.4-24.9% Colliery) Longitude: 951510 Sonari and from Dibrugarh via exist in this area where thicker seams Sulphur: 3.2-7.4%; Proved Reserve is and partly to Naharkatia and Duliajan. of coal occur towards the bottom. Fixed carbon: 32.6 – 46.5% 32 Million Tones.. in Sivsagar 951500 Volatile Matter: 32.5 – 45.5%; district (Dilli E About ten coal seams of various Calorific Value: 5035 – 6020 Kcal. / Kg Colliery) thickness ranging from 0.50m to 21m Lower coal bearing horizon : separated are located in the lower most horizon. Moisture : 4.2-6.4%; Ash: 2.1-28.7% by the Dilli Sulphur: 1.7-5.1%; (Disang Fixed carbon: 32.9 – 54.9% river.) Volatile Matter: 33.7 – 46.9%; Calorific Value: 5035 – 6020 Kcal. / Kg 3. SARAIPUNG Tinsukia 5 Km SW of Bhadoi Panch Ali of Good workable coal. Probable reserve Latitude: 271500 Coal occurs intermittently along the TARAJAN Tinsukia district linked with moisture 6.5% Ash.4.7% estimated to be 0.5 to strike length of 7 Km. COAL 272000 Duliajan-Digboi road. Fixed carbon: 44.8% Million Tones.. DEPOSITS N Longitude: 952500 to 953000 E 4. SHEELVETA Karbi Latitude: 255825 40 Km northwest of Diphu and 110 Two coal seams separated by Good quality Proved Reserve :0. Anglong to Km southeast of Nagaon on NH-36 carbonaceous shale. Moisture 10.8 to 16.3%. 53 million tones 260030 Average thickness of coal seam : Fixed carbon: 22.0 to 28.4% N 2.35m ash content: 7 to 24.4% Area: 0.2 sq. Km.. Longitude: 931730 to 931835 E S L. NAME OF RESERVE DISTRICT LOCATION ACCESSIBILITY OCCURRENCE CHEMICAL COMPOSITION / QUALITY N THE DEPOSIT (million tons) O. 5. KOILAJAN Karbi Latitude: 255838 N 8 Km NW of Dilai on Manja- 1.8 m thick coal seam occurs within Assay result: Total possible reserve Anglong Longitude: 933330 E Sarihajan road. the Basal Sandstone Formation at Moisture8.82%to Ash : 8.24% is estimated at 0.50 Koliajan Nala covering an area of Fixed Carbon : 32.16% million tones. about 0.4 sq.km. Sulphur : 2% Volatile matter : 50.76% Calorific Value : 7940-8570 Kcal/kg The coal may be used in domestic purpose as coke and also in brick, tea and cement industries. 6. GARAMPANI Dima- Latitude: 253030 N Near Timang Basti and can be The coal occurs in association with Assay result is as follows: Total possible reserve Hasao Longitude: 935702 E approached from Umrongsho Barail Sandstone Formation of Jaintia Moisture: 5.9% (within the 2.5 sq.km. through a metalled road. Group of rocks covering an area of 2.5 Ash: 18.3% area) is estimated at sq.Km. Three coal seams associated Fixed carbon: 39.6% 1.00 million tones. with Basal Sandstone are exposed Volatile matter : 36.5 – 47.5% intermittently along both the banks of Sulphur : 0.0 - 5.2% Kopili River. Calorific Value : 5790 - 7380 Kcal/kg The thickness of coal seams varies from 0.30 m to 1.5 m. 7. KHOTA ARDA Dima- Latitude: 254100 N The deposit can be approached by Two nos. of coal seams separated by Assay result is as follows: The reserve of coal is COAL DEPOSIT Hasao Longitude: 925500 E Dayanamukh – Dihangi road and a thin band of carbonaceous shale Moisture: 10.6 -12.7% 0.167 million tones situated at 35 km. south of Lanka are exposed within Kopili Formation Ash: 3.8 – 24.8% railway station and 93 km. away at Phanglangsho nala over an area of Fixed carbon: 30.9 – 34.5% from the district HQ Haflong. about 1.5 sq. Km. The thickness of Volatile matter : 34.8 – 44.7% coal seams varies from 0.50 to 1.00 m. The deposit is economically viable for open cast mining. 8. DITHOR COAL Dima- Latitude: 252640 N The deposit is located near A small band of upper Eocene coal The proximate analysis of the coal on air Indicated reserve of DEPOSIT Hasao Longitude: 922730 E Umrangsho and can be occurs within Kopili Formation of dried basis shows as follows: 0.52 million tones. approached by 6 km. long forest Jaintia Group of rocks.The thickness Moisture: 6.9 – 8.3 % road from Lanka – Garampani of coal seams varies from 0.20 m to Ash: 15.0 – 70.6 % Road. 0.85 m. Fixed carbon: 24.6 – 41.8 % Volatile matter : 32.9 – 40.7% 2.Limestone Deposits: SL. NAME OF THE CHEMICAL COMPOSITION / RESERVE DISTRICT LOCATION ACCESSIBILITY OCCURRENCE NO. DEPOSIT QUALITY (million tons) 1. DILLAI PARBAT Karbi Latitude: 254954 to Connected by metalled road Dillai Parbat Deposit is divided into Cement grade Proved reserve: DEPOSIT Anglong 260100 N about 19 Km from Bokajan two blocks, viz., East block and Weighted average composition: 32.41 million railway station. North block. CaO: 49.72% tones Longitude: 933440 to MgO: 1.04%. 933550E 2. SHEELVETA Karbi Latitude: 260000 to On NH 36. Small bands of cement grade Cement grade Probable reserve: DEPOSIT Anglong 260036 N 122 Km from Nagaon and 37 Km limestone occur. Weighted average composition is 2 million tones. Longitude: 931735 to from Diphu railway station. CaO: 45.0% 932025E MgO: 2.0 – 2.01%. 3. KOILAJAN Karbi Latitude: 255948 N 25 Km from Dimapur railway Small to medium bands of limestone Cement grade Proved reserve: DEPOSIT Anglong station. occur. Weighted average composition is 30 million tones Longitude: 933340 E CaO: 45.30% - 47.44%, Fe2O3:0.98-2.78%, Al2O3: 0.90- 3.75%, MgO: 0.81 –1.59%. 4. NEW Dima-Hasao Latitude: 253100 to Near 18 Km post of Two bands of limestone 30m and Cement grade Proved reserve: UMRONGSHO 253300 N Garampani -Lanka road. 50m thickness intervened by shale Weighted average composition is 360 million tones DEPOSIT band. CaO: 47.00% - 50.43%, Longitude: 925600 to 924900E Fe2O3:2.92-21.74%, MgO: 0.00 – 2.85%. Al2O3: 1.53-14.0%, SiO2:1.96-11.63%,L.O.I: 16.47- 39.35%. 5. 16TH KM Dima-Hasao Latitude: 253222 to In Umrongsho. Covers a total area of 1.07 sq.Km. Weighted average composition: Proved reserve: BLOCK 253430 N 6 Km from Umrongsho and 12 where the total thickness of CaO: 46.84% , SiO2: 1.96-11.63%, 44 million tones Longitude: 924620 to Km from Lanka limestone is 80 m. MgO: 2.1%, Fe2O3: 2.92-21.74% 924625 E 6. JUIPAHAR Dima-Hasao Latitude: 253220 to Near Umrongsho-Lanka road in Occupies an area of about 6.5 sq. Weighted average composition: Proved reserve: DEPOSIT 253440 N between 22 Km post and 23 km Km. CaO: 45 % 184.00 million Longitude: 924610 to post. MgO: 1.68 %. tones 924810 E 3.Granite Deposits: SL . NAME OF THE RESERVE DISTRICT LOCATION ACCESSIBILITY CHEMICAL COMPOSITION / QUALITY NO DEPOSIT (million tons) . 1. MAHAMAYA Karbi Anglong Latitude: 261295 N Situated near Dokmoka beside NH Pink Granite. Proved reserve: 30 million cubic Longitude: 930400 E 36 and 92 Km away from Diphu. Massive, hard and fractured in nature. meter. 2. CENTRE BAZAR Karbi Anglong Latitude: 261715 N Located beside NH 36 60 Km. Pink Granite. Estimated reserve: 13 million Longitude: 930930 away from Diphu. Massive, hard and fractured in nature. Cubic meter. to 931004 E 3. BELLUGHAT Karbi Anglong Latitude: 263500 to 14 km. away from Dokomoka along Light colourd, coarse to medium grained, Estimated reserve: 2 million 263510 N NH 36. massive and gray granite. Cubic meter. Longitude: 934500 to 931001 E 4. SILONIJAN Karbi Anglong Latitude: 261925 to The area is connected by an all Massive, dark pink, coarse and fractured with Detail estimate is yet to be done. 262020 N weather road stretching west of hypidiomorphic texture and located is an Longitude: 934400 proper Silonijan along NH 39. isolated pocket. to 934500 E 5. BORJURI Karbi Anglong Latitude: 260330 N The area is connected by a fair Black in colour, hard, massive, fine grained Detail estimate is yet to be done. weather road of 3 km stretching and well fractured. Longitude: 930325 E from Kathiatoli – Salna road and situated at a distance of 20 km from Nagaon and about 180 km from the district H.Q. Diphu. 6. DUDHKURI HILL Kamrup Latitude: 260010 N Nearby Boko and about 55 km west Light Pink. Detail estimate is yet to be done.