Geological report on Limestone Exploration of Goyla Block, Abadasa Taluka, Kachchh District, Gujarat Executive Summary Prepared for Commissioner of Geology & Mining Government of Gujarat Prepared by Geovale service Pvt. Ltd 56, Ideal villas, Kochpukur, Rajarhat Kolkata-700 156 West Bengal November, 2015
Geological Report on Limestone Exploration of Goyla Block, Abadasa Taluka, Kachchh District, Gujarat Executive Summary Prepared for Commissioner of Geology and Mining, Gujarat Geovale Services Pvt. Ltd 56, Ideal Villas, Kochpukur, Rajarhat Kolkata - 700 156 West Bengal, India www.geovale.com E: info@geovale.com November, 2015
Executive Summary Goyla Block in the Abadasa Taluka in the Kachchh District of Gujarat. It is a N-S elongated irregular polygonal block with an area of 2.619 km2 (261.9 Ha) having dimensions of approx. 3.6 km in length and 1.77 km in width. The block (Figure 1) is divided into two non-contiguous blocks (Goyla 1 in the north is 1.46 km 2 area and Goyla 2 in the south is 1.159 km 2 area). The Goyla block has been part of regional exploration conducted by Commissioner of Geology and Mining (CGM) through a Rapid Reserve Assessment Survey (RRAS) in 2009. The Goyla Block was f u rther e x p l o re d i n detail by Gujarat Mineral Development Corporation (GMDC) in 2014-2015. Cement grade nummulitic limestone occurs in the G o y l a B l o c k i n t h e Eocene - Oligocene Fulra Formation and Oligocene - Miocene Maniyara Fort Formation, which are part of the Tertiary Platformal sediments of Kachchh. Maniyara Fort Formation is exposed over most of the block, while nummulitic limestones of Fulra Formation have been intersected only in diamond core drillholes. Manyiara Fort Formation has shale, clay and sandy litho-units interbanded thin limestone units. The multiple beds of greyish white to yellowish grey micrite supported nummulitic Fulra Formation limestone define the mineralised body. The cumulative thickness of the Fulra Formation limestones, range from 12 m to 15 m. The cement grade limestone has a number of partings of clay and shale. The overburden in the area, belonging mainly to Maniyara Formation, range from 5 t o 1 5 m mostly. However, towards the southern part of the Goyla Block, shale and clay lithounits belonging to Khari Nadi Formation, overlie Maniyara Fort Formation, thus contributing to development of a thicker overburden of upto 35 m. Goyla Block has a relief of 23 m, with altitude ranging from ~30 m to ~53 m above the MSL. The topography is gently rolling with a moderately elevated landform at the southwestern and northeastern parts of the block. A thin 1 3 m veneer of red brown soil overlies the Maniyara Fort Formation in most part of the block. The block is located at about 32 kms from the Arabian Sea coastline. GMDC organized the topographic survey using Total Station theodolites. DGPS surveys have been carried out to define the boundary of the block. 66
diamond core drillholes, totalling 2887 m have been drilled within the Goyla Block in a 200m x 200 m grid. 674 half split core sample composites from 1 to 2 m length each were pulverized to 150 microns at site and sent to Inspectorate Griffith s (IG) wet chemical laboratory at Gandhidham in Gujarat for assay. Element suite determined at IG's laboratory include SiO 2, Al 2O 3, Fe 2O 3, TiO 2, CaO, MgO, P 2O 5, Na 2O, K 2O, Cl, SO 3, R 2O 3 and LoI along with specific gravity on Dried Air basis using IS standard procedures. Geovale Services finalized the Geological Report of the Block based on the data provided by the CGM and GMDC. It carried out the 3D Geological Resource modeling of the ore body, using GEOVIA SurpacTM software. The ore body modeling process involved developing a geological database from the drillhole database, which has been validated by classical statistics and geostatistics. Surpac allows the data visualization by creation of sections along desired directions and defining ore-waste contact by manual on-screen digitization. The two stage solid modeling of the ore body by wire-framing the digitized cross sections and block modeling (50m x 50m x 2 m blocks) on the basis of geostatistically derived parameters allows estimation of 3D ore volume and block wise grades. Resources and grades have been derived using both the Krigging interpolation methods. Though the specific gravity ranged from 2.2 to 2.6, a bulk density of 2.25 has been used as advised by the CGM, Gujarat for the tonnage determination of the limestone ore body. A cut-off grade of 37% CaO and cut of width of 1.0 m thickness of limestone band has been applied to determine the resource volume and grade for every Surpac block. In Goyla, GMDC carried out General Exploration (G-2 Stage) exploration. The Geological Resource o f l i m e s t o n e i n t h e B l o c k has been classified based on the Minerals (Evidence of Mineral Contents) Rules, 2015 notified by the Ministry of Mines. The total Geological Resource established in Goyla Block is 68 Mt of Indicated Mineral Resources (UNFC 1997, 332 category).
Table 1 summarises the grade wise Indicated Geological Resource (UNFC 332) of the Goyla Block (also separately shown for the two sub-blocks). Table 1: Summary Resource Classification: Goyla Block CaO% Range Sub-Block A (North) Sub-Block B (South) Total Volume (m 3 ) Tonnes CaO% Volume (m 3 ) Tonnes CaO% Volume (m 3 ) Tonnes CaO% 37.0-40.0 630000 1417500 38.53 0 0 0.00 0 0 0.00 40.0-42.0 630000 1417500 41.12 35000 78750 41.40 665000 1496250 0.00 42.0-44.0 1400000 3150000 43.10 470000 1057500 43.18 1870000 4207500 0.00 + 44.0 15670000 35257500 47.55 11655000 26223750 47.31 27325000 61481250 47.45 Grand Total 18330000 41242500 46.68 12160000 27360000 47.13 30490000 68602500 46.86 The following table provides the summary information about Goyla Block. Table 2: Summary Information Table: Goyla Block Name of the Block Goyla Location Summary Village Taluka District State Goyla Abadasa Kachchh Gujarat Area Summary Size of the block (Sq km) 2.619 Boundary coordinates: Goyla 1 Point Easting Northing Latitude Longitude BP 01 478480.993 2593917.415 23 27'18.391" 68 47'21.509" BP 02 478603.970 2594063.068 23 27'23.133" 68 47'25.836" BP 03 478989.053 2594213.020 23 27'28.027" 68 47'39.402" BP 04 479334.752 2594465.232 23 27'36.244" 68 47'51.574" BP 05 479919.512 2594639.927 23 27'41.951" 68 48'12.177" BP 06 479979.000 2594552.654 23 27'39.116" 68 48T4.279" BP 07 479949.113 2594438.747 23 27'35.411" 68 48T3.231" BP 08 479955.533 2594400.000 23 27'34.151" 68 48'13.459" BP 09 479909.184 2594392.419 23 27'33.903" 68 48'11.826" BP 10 479937.766 2594308.136 23 27'31.163" 68 48T2.837" BP 11 480009.399 2594335.540 23 27'32.057" 68 48'15.361"
BP 12 480329.834 2594045.318 23 27'22.634" 68 48'26.669" BP 13 480044.839 2593309.427 23 26'58.691" 68 48T6.659" BP 14 479617.248 2593691.426 23 27'11.094" 68 48'1.57" BP 15 479566.919 2593839.262 23 27'15.9" 68 47'59.789" BP 16 479430.879 2593831.137 23 27'15.629" 68 47'54.994" BP 17 479380.913 2593945.793 23 27'19.355" 68 47'53.227" BP 18 479301.886 2593896.449 23 27'17.747" 68 47'50.444" BP 19 479263.054 2593852.570 23 27'16.318" 68 47'49.078" BP 20 479350.442 2593761.514 23 27'13.361" 68 47'52.162" BP 21 479394.268 2593771.822 23 27'13.699" 68 47'53.706" BP 22 479367.267 2593722.426 23 27'12.091" 68 47'52.757" BP 23 479215.648 2593587.487 23 27'7.696" 68 47'47.42" BP 24 478881.810 2593670.234 23 27'10.372" 68 47'35.649" BP 25 478863.334 2593385.756 23 27T.12" 68 47'35.012" BP 26 478894.852 2593279.139 23 26'57.654" 68 47'36.128" BP 27 479046.016 2593187.428 23 26'54.679" 68 47'41.461" BP 28 479061.235 2593143.883 23 26'53.264" 68 47'42" BP 29 479027.938 2593103.665 23 26'51.954" 68 47'40.828" BP 30 478699.197 2593018.456 23 26'49.168" 68 47'29.246" BP 31 478737.937 2592980.439 23 26'47.934" 68 47'30.613" BP 32 478832.022 2592937.585 23 26'46.545" 68 47'33.931" BP 33 478621.924 2592943.946 23 26'46.742" 68 47'26.526" BP 34 478595.351 2592913.484 23 26'45.75" 68 47'25.591" BP 35 478467.216 2593033.060 23 26'49.632" 68 47'21.069" BP 36 478512.695 2593047.145 23 26'50.092" 68 47'22.671" BP 37 478538.930 2593109.280 23 26'52.114" 68 47'23.592" BP 38 478756.630 2593155.740 23 26'53.635" 68 47'31.263" BP 39 478833.780 2593196.488 23 26'54.964" 68 47'33.98" BP 40 478807.237 2593294.278 23 26'58.143" 68 47'33.04" BP 41 478691.089 2593303.225 23 26'58.428" 68 47'28.945" BP 42 478561.050 2593260.495 23 26'57.032" 68 47'24.364" BP 43 478513.086 2593486.345 23 27'4.374" 68 47'22.662" Boundary Points Goyla - 2 Point Easting Northing Latitude Longitude BP 01 478729.017 2591913.660 23 26'13.243" 68 47'30.353" BP 02 479197.179 2591600.906 23 26'3.095" 68 47'46.868" BP 03 479114.659 2591513.148 23 26'0.237" 68 47'43.964" BP 04 479093.685 2591473.024 23 25'58.932" 68047'43.227" BP 05 479114.967 2591436.369 23 25'57.741" 68 47'43.979" BP 06 479134.234 2591380.445 23 25'55.923" 68 47'44.661" BP 07 479171.607 2591359.655 23 25'55.249" 68 47'45.979" BP 08 479213.937 2591270.866 23 25'52.363" 68 47'47.475"
BP 09 478492.304 2590994.855 23 25'43.354" 68 47'22.058" BP 10 478416.342 2591321.017 23 25'53.957" 68 47'19.364" BP 11 478428.650 2591435.317 23 25'57.674" 68 47'19.792" BP 12 478742.183 2591738.190 23 26'7.538" 68 47'30.826" BP 13 478740.888 2591814.507 23 26'10.02" 68 47'30.776" BP 14 478714.620 2591940.027 23 26'14.1" 68 47'29.844" BP 15 478667.835 2592129.725 23 26'20.267" 68 47'28.186" BP 16 478468.263 2592071.141 23 26'18.352" 68 47'21.155" BP 17 478393.000 2591988.000 23 26'15.645" 68 47'18.507" BP 18 478375.183 2591982.309 23 26'15.459" 68 47'17.879" BP 19 478249.993 2592223.627 23 26'23.3" 68 47'13.455" BP 20 478069.525 2592624.783 23 26'36.337" 68 47'7.074" BP 21 478636.263 2592815.396 23 26'42.562" 68 47'27.038" BP 22 478827.058 2592801.592 23 26'42.122" 68 47'33.763" BP 23 478913.661 2592570.748 23 26'34.62" 68 47'36.827" BP 24 479009.094 2592423.072 23 26'29.822" 68 47'40.198" BP 25 479062.629 2592543.422 23 26'33.738" 68o47'42.079" BP 26 479177.846 2592515.515 23 26'32.836" 68047'46.141" BP 27 479207.112 2592447.294 23 26'30.619" 68 47'47.176" BP 28 479239.117 2592449.620 23 26'30.696" 68 47'48.304" BP 29 479227.728 2592580.561 23 26'34.953" 68 47'47.896" BP 30 479357.377 2592563.127 23 26'34.392" 68 47'52.466" BP 31 479378.475 2592393.526 23 26'28.878" 68 47'53.218" BP 32 479356.642 2592321.396 23 26'26.531" 68 47'52.452" BP 33 479399.831 2592203.156 23 26'22.688" 68 47'53.98" BP 34 479411.049 2592191.276 23 26'22.303" 68 47'54.376" BP 35 479466.588 2592132.462 23 26'20.393" 68 47'56.336" BP 36 479403.029 2592096.516 23 26'19.221" 68 47'54.098" BP 37 479360.703 2592019.853 23 26'16.726" 68 47'52.61" BP 38 479380.252 2592000.000 23 26'16.081" 68 47'53.3" BP 39 479451.996 2591927.141 23 26'13.715" 68 47'55.832" BP 40 479440.875 2591891.544 23 26'12.557" 68 47'55.442" BP 41 479609.594 2591911.950 23 26'13.228" 68 48'1.387" BP 42 479627.534 2591861.759 23 26'11.597" 68 48'2.022" BP 43 479667.004 2591837.380 23 26'10.806" 68 48'3.414" BP 44 479500.312 2591864.637 23 26'11.685" 68 47'57.538" BP 45 479427.860 2591839.281 23 26'10.857" 68 47'54.986" BP 46 479282.277 2591617.112 23 26'3.626" 68 47'49.866" BP 45 479427.860 2591839.281 23 26'10.857" 68 47'54.986" BP 46 479282.277 2591617.112 23 26'3.626" 68 47'49.866" BP 47 479119.336 2592270.413 23 26'24.863" 68 47'44.091" BP 48 479201.451 2592307.939 23 26'26.087" 68 47'46.983"
BP 49 479198.623 2592345.044 23 26'27.293" 68 47'46.882" BP 50 479268.685 2592365.748 23 26'27.97" 68 47'49.35" BP 51 479282.400 2592438.274 23 26'30.329" 68 47'49.83" BP 52 479109.639 2592309.293 23 26'26.127" 68 47'43.747" BP 53 479029.172 2592274.747 23 26'24.999" 68 47'40.913" BP 54 478994.998 2592171.342 23 26'21.635" 68 47'39.714" BP 55 478776.845 2591952.787 23 26'14.518" 68 47'32.036" Accessibility Nearest rail head Road Airport Port Power Bhuj State Highways and two lane metalled roads connecting the block area with Ahmedhabad via Bhuj. Rudra Mata Domestic Airport, Bhuj (100km) Kandla Port near Gandhidham (170km) Akrimota Thermal Power Project of GMDC at Nani Chher Village in Lakhapat Taluka Hydrography Local drainage Rivers East/South east Climate Average rainfall ( June-September) Temperature (winter - max and min) Temperature (summer - max and min) 100 mm 35 0 C and 8 0 C 40 0 C and 22 0 C Topography Toposheet Number Nature of surface 41 A/15 (F42C15 of Open Series) Gently rolling terrain sloping towards south east; Terrain rises up towards NE and SW. Cadastral Summary Government Land 2.619 km 2 area (100%) Santhani Land NIL Forest Area NIL Exploration Summary Regional geological mapping (agency, scale) Geological Survey of India; Scale - 1:500000 Regional exploration Agency (RRAS) Commissioner of Geology and Mining, Gujarat
Block exploration (agency) Gujarat Mineral Development Corporation Number of drillholes 66 Total metereage 2887 Resource Summary (Mineral Evidence Rule) Resource (UNFC categorisation, tonnage) 68 Mt Average grade 47% CaO Limestone thickness 12m Average OB thickness 5 to 15m on average (35m max in SW) Structure - strike and dip NE-SW/3 0 5 0 SE Faults None Figure 1: Location of Goyla Block, Abadasa Taluka, Kachchh District of Gujarat shown above in the Google Earth image.
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