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Home , Salur, Srikakulam district, Vizianagaram district

STATE UNIT: PROJECT: MANGANESE SUPERVISORY OFFICER: Mission-IIA Mineral Resource Assessment Item No. NEW ITEM Field Season Year FSP Number ME SR AP 2018 2018-19 Type Code Com/IGC Region Code State Unit Year of Sl. No. code code/Mission Initiation Participating Unit(s)/ Region (s) Mn SR AP Geophysics SR Division/ Region State Division/ Region/ Division Region/ SU Division/ Region/ SU Project Unit Project SU /Project Project Geographic Information State District (s) Degree Sheet (s) Toposheet (s) Mineral/ Tectonic Belt, Basin etc. (Code) AP VIZIANAGRAM 65N 65N/3 EGMB

Personnel 2G Name of item in-charge 1G Name of other officers 1G Title General Exploration For Manganese Ore in Yenubaruva block, District, Andhra Pradesh. Stage G2 Key words Assessment of Manganese, Yenubaruva block, EGMB. Objective (s)/ Projected (i)To delineate zones of manganese minersalisation. Outcome (ii) To assess the grade and resources in Yenubaruva block

Total duration of item One Year (FS 2018-19) Item linked with As per DMG, AP request Whether GCM has been done in the area No Whether GPM has been done in the area No Whether the item is a spinoff of any other item No Whether item is collaborative No Whether the item is sponsored No If yes, Name of the sponsor NA Outsourced work component, if any (specify) Drilling Nature and Quantum of work and time schedule Total (a) Expected Year of Work Work Nature of work Workload completion already proposed envisaged (b) Circulation of final completed for FS report 2018-19 01. Geological Survey (a) March 2019 New Item ^^DM (Sq.Km) 1:2000 1.0 (b) September 2019 1.0 02. Technological Survey (a) Surface exploration PT (cu.m) 100 100 (b) Sub-surface exploration Drilling (m) 1000 1000 03. SMPL: BRS(Nos.) ** 40 40 PTS(Nos) ** 50 50 CS (Core samples) 250 250 PS# 20 20 PCS 10 10 Ore microscopy# 20 20 XRD+ 5 5 EPMA# 5 5 Ore beneficiation studies 3 3

04. Chemical Analysis** 350 350 (Major oxides by XRF,) selected sample for trace elements and REE, W, few samples from graphite zone # Petrology lab, SR, ; ** Chemical laboratory, SRO, Hyderabad + at NCEGR- Bengaluru ^^ Boundary coordinates to be fixed by DGPS TIMELINE PROPOSED FOR EACH WORK COMPONENT Field Studies Name of the officer Expected field stay Expected period of fieldwork (number of days) From To 1G 120 July 2018 March 2019 Supervisory Officer 15 July2018 March 2019

Laboratory Studies Activity From To Pre-field laboratory component and reconnaissance for the April 2018 June 2018 assignment under consideration, finalization of report of the previous field season and planning for current programmes Geological study (fieldwork and collection, processing of samples July 2018 March 2019 and their submission) Chemical study (last date of sample submission ) March 2019 Chemical study (acquisition of analytical data) September 2018 March 2019

Report Submission Submission of the first draft of report 30th June 2019 Scrutiny of the report by supervisory officer 1st July to 31stJuly 2019 Scrutiny of the report by RMH office 1stAugust to 31st August 2019 Scrutiny of the report by NMH-II office September, 2019 Finalization of the report 30th Sept. 2019 Circulation of the report 30th Sept. 2019

Operational Expenses Heads Expenses(Rs) POL Rs. 1,50,000/- WAGES Rs. 3,50,000/- OC Rs. 1,25,000/- Drilling (outsourcing) Rs. 10,00,000/-

Background Information:

Major manganese ore deposits in Andhra Pradesh mainly occur in the , Vizianagaram and districts in the Precambrian Eastern Ghat Mobile Belt (EGMB). Manganese mineralisation in EGMB is associated with the khondalite, garnetiferous quartzite, calc- granulite representing high grade metasedimentary rocks. The proposed area falls Modangi area, Vizianagaram District, Andhra Pradesh.

The area is occupied by rocks of the Khondalite, Charnockite and Migmatite suites. Khondalite suite comprises feldspathic quartzite, quartzite, garnet sillimanite gneiss (khondalite) and calc granulite. The feldspathic quartzite is exposed as linear bands, pinches and swells associated with quartzite.

C. Kannan (1967-68), carried out systematic mapping parts of Taluk, , Andhra Pradesh. An area of 100 sq. km was geologically mapped on 1:63,360 scale, near (180 29':830 7') and Matumuru (180 27'10'':839'30'') parts of Salur taluk. The different rock types met with in the area (South of Salur) mapped are the Khondalitic and granitic suite of rocks, with intrusions of charnockites, pegmatites and vein quartz. The rocks are folded and sheared. The general strike of the foliation of the rock formations is N200E-S200W- N700E-S700W dipping steeply towards south-east. At several place occurrences of graphite and manganese ore were found in the Khondalites.

0 0 G.V. Rao (1960-61), an area of about 400 sq.kms. Between 18 19' and 18 30' N. latitudes and 0 0 83 15' and 83 30' E. longitudes in the taluks of Salur, Bobbill and Chipurupalle in Srikakulam district was mapped on 1:63,360 scale during the months of February, March and April, 1961 Detailed large scale mapping of the quarries in the Bangaruvalasa, and neighbouring areas revealed that the manganese-ore in these areas is associated with felspathic quartzites in coarse-grained quartzite but the ore-bearing layer as are comparatively thicker than in the other quarries reported earlier. This is in variance with the earlier views expressed that the manganese-ore in the Garbham quarry is associated with rocks similar to those in the Koduru quarry, the garnet-granulites. Krishna Rao et al investigated the manganese deposits/occurrences in the Vizianagaram manganese belt and computed a resource of 5.7 mt of manganese ore (1977-84). Chandra Chowdary et al (1978) carried out manganese exploration and regional assessment in Srikakulam and Visakhapatnam (manganese Belt) districts which falls between Lat. 18°13’ to 18°30’ N and Long. 83°13’ to 83°45’ E in Survey of Toposheets nos. 65 N/7, 11, 12 & 3 and is about 1200 sq km in areas extent. The manganese-ore mines are located in Chipurupalle, , and Salur taluks of Srikakulam district and a few in Vizianagaram taluk of . The available ore reserves of indicated and inferred categories are of the order of 1.24 m.t. of 28-36% Mn grade. Tushar Meshram, et.al. (FS 2016-17) carried out specialized thematic mapping in the zones of manganese rich bodies in Pachipenta-Pittada area of Srikakulam and Visakhapatnam districts, Andhra Pradesh in toposheet no. 65N/3. Analytical values of manganese (Mn) in bedrock samples collected from the Mn enriched horizons of calc-granulite and khondalite rock types ranges from 0.16% to 37.70%. The analytical results of float ore samples are not showing encouraging value. The maximum values obtained are up to 23.64%. Manganese mineralization occur in banded form i.e. mainly secondary supergene enrichment of the ore. There are no adjoining active mines. The nearest mine belongs to Sri S.V. Narayana Reddy, Puthikavalasa. There are active manganese adjoining mines near Yenubaruva block (Sri Y.P. Rao & Sanjay Mining (P) Limited). Recent field studied by Rajesh Sahoo (2018) and submitted the report according the report, the northern part of the block is devoid of any kind of mineralisation. The manganese occurrences found towards the southern part. The manganese is associated with charnockite and khondalite. The Mn boulders are observed around 200m from the road inside the forest. Most of the manganese boulders are showing leaching out character and forms coatings on the charnockite boulders which can be seen by breaking it. At some portions, manganese is getting concentrated and is having silicate phases (pyx, feld, qtz, grt, bt). Most of the portions of the ore do not give any streak indicating more silicate phases, though it appears to be black in the concentrated zone. The disposition of the manganese body is very difficult work out due to dense vegetation and lack of in-situ exposure. Based on float ores, tentatively the dimension of the ore is interpreted to be of (100-150 m) X (10 m). Analytical results of one grab sample of manganese ore collected from the block yielded 22.15% MnO.

In view of the above and as per the request of Directorate of Mining and Geology, Andhra Pradesh, the present investigation has been formulated with an aim to ascertain the strike length, width and depth persistence of the manganese ore body by G-2 stage of exploration and to assess the grade and resources in Yenubaruva block, Vizianagaram District, Andhra Pradesh.

Detail mapping will bring out the exact disposition of manganese ore bodies. It is proposed to evaluate them initially at vertical depth of 30m by drilling at 100m strike interval. A couple of borehole will be planned to see the depth persistence of Mn horizon at a vertical depth of 60m. Both vertical as well inclined boreholes should be plan depending upon the disposition of Mn horizon. Borehole length may vary from 50m to 120m.

Coordinate of the block is as below

Block- Yenubaruva (65N/3) Index Lat DMS Long DMS P1 18°26'0.804" 83°13'41.29" P2 18°26'21.1" 83°14'16.8" P3 18°25'57.6" 83°14'32.8" P4 18°25'35.865" 83°13'57.21" Bibliography:

1. Rao, G.V. (1961), Report on the geology and manganese-ore deposits of the western part of the Vishakhapatnam manganese belt, Srikakulam district, Andhra Pradesh. Unpub. GSI Progress Report for the Field Season – 1960-61 2. C.Kannan (1969), systematic mapping parts of Salur Taluk, Srikakulam district, Andhra Pradesh, Unpub. GSI Progress Report for the Field Season – 1967-68 3. Krishna Rao,S.V.G. (1977-84), Inteim report on the Mn ore exploration and regional assessment in Vizianagaram and Srikakulam districts, Andhra Pradesh. 4. Chandra Chowdary, Y.M.K., Krishna Rao, S.V.G and Sarma, K.J, 1978: A Scheme on Manganese Ore Exploration and Regional Assessment in Srikakulam and Vishakhapatnam (Manganese Belt) Districts, Andhra Pradesh, Unpubl. Rep. Geol. Surv. India, (FS: 1977-78), Accession No.: SRO-6129 5. Tushar Meshram, et.al. (FS 2016-17), specialized thematic mapping in the zones of manganese rich bodies in Pachipenta-Pittada area of Srikakulam and Visakhapatnam districts, Andhra Pradesh in toposheet no. 65N/3 Unpubl. Rep. Geol. Surv. India, (FS: 2016-17) 6. Sahoo, Rajesh (2018), Report of the field visit of manganese block (IX) in and around Kondagudivalasa, Panchimamidivalasa and konda-kengua areas in T.S No. 65N/3 in Vizianagaram district of Andhra Pradesh, as per the request by DGM, Andhra Pradesh.

After the 1: 50k database of GSI

Map after the STM carried out by SU AP in 2016-17