Crown Pillar of Kolar Gold Mines to Assess Quarriable Potential Kolar Schist Belt District- Kolar, Karnataka

EXPLORATION REPORT ON DETAILED EXPLORATION IN CROWN PILLAR OF KOLAR GOLD MINES TO ASSESS QUARRIABLE POTENTIAL KOLAR SCHIST BELT DISTRICT- KOLAR, KARNATAKA

EXECUTIVE SUMMARY

WEST S-2' EAST S-2 R.L. (m) 1 MCP-2 MCP-1 MCP-3 1 1 RL 125.0755 RL 126.7159 RL 127.6805 1 1 0 1 1 1 57° 1 52° 52° 1 1 535X1.1 1 1 1 1 1 1 640X0.2 1 1 680X0.5 200X0.2 2 2 2 2 2 2 250X0. 2 4 5 2 2 2 2 4 375X1.1 6 .1 4 <0 0X 6 5 6 0 E 4 1 D 50X0.6 6 DE O 5 4 O L L 4 5 N 6 D E 6 E E 60X<0.1 R R 5 6 1 G 6 25 0. 5 4 E X 4 D 5 O 7 385X0.2 L 5 4 5 245X0.8 6 6 N 5 W 4 O R 4 5 5 4 5 B 45X<0.1 110X0.4 5 m 160 (264 BFD) 5 0 4 4 .2 OLD WORKING 9 90X0.8 4 5 -4 175 X 1.5 .D 5 T 85X2.2 4 100X0.4 105X1.8 4 0m 0 50 m 4. 0 150X0.2 -6 5 D 1. . -6 T D T.

I N D E X MCP-3 MASSIVE/FOLIATED FINE TO MEDIUM GRAINED BOREHOLE NO WITH R.L. IN FEET , BFD DEPTH IN (m) 127.6805 4 OCCASSIONALLY, GRANULAR AMPHIBOLITE FILL - MILL SLAG, TAILING SAND, AMPHIBOLITE BRICK, 1 5 FINE TO COARSE GRAINED TUFFED AMPHIBOLITE GRANITE ETC. 2 SOIL 6 SCHISTOSE AMPHIBOLITE (Sch)

MINERAL EXPLORATION CORPORATION LIMITED (A GOVERNMENT OF INDIA ENTERPRISE) SEMINARY HILLS, NAGPUR FEBRUARY-1998

1 EXPLORATION REPORT ON DETAILED EXPLORATION IN CROWN PILLAR OF KOLAR GOLD MINES TO ASSESS QUARRIABLE POTENTIAL KOLAR SCHIST BELT, DISTRICT- KOLAR, KARNATAKA

EXECUTIVE SUMMARY

1.0 LOCATION

The Kolar Gold Fields is located in Bangarpet Taluk of Kolar District, Karnataka and is situated 100 km east of Bangalore. The area is bounded by Latitude 12059’N, Longitude 78015’ and 78019’E falls in the Survey of India Toposheet No. 59 L/5. The Kolar Gold fields is located in Bangarpet Taluk of Kolar District and is situated 100 km east of Bangalore.

2.0 GEOLOGY & STRUCTURE

The Kolar greenstone belt of Archean age is a narrow north south trending zone of mafic volcanic rocks. They are massive and pillowed tholeiitic basalt, gabbroic sills, pyroxenites and minor interflow clastics. The overall structure of the Kolar Gold Field is in the form of a synclinal through resting on the peninsular granites and gneissic rocks. Geology of the area is represented by Amphibolite (meta basalt), which is moderately foliated. In general coarse grained tufted (or fibrous due to actinolite) amphibolite and schistose amphibolite have localized the gold lodes. The area around the shafts has been filled with rock dump, mill slag, tailing sand etc. The strike of the lodes is almost north south and dip varies from 20° to 45° towards west.

3.0 MINERALISATION

The presence of numerous ancient workings at shallow depths of 15 to 20m, it is observed that a capping of about 40m from the surface is preserved over the entire stretch of the underground mines. It is envisaged that the Crown portion, may contain significant gold mineralisation. In general coarse grained tuffed (or fibrous due to actinolite) amphibolite and schistose amphibolite have localized the gold lodes.

4.0 QUANTUM OF WORK DONE

MECL has carried out detailed Geological Mapping & Topographical survey covering 0.80 Sq.km. area, 733.20 mtrs of drilling. 616 Nos of primary and 48 Nos of check samples for Assay of Gold (Au) were analysed.

In view of the scanty mineralisation intersected, in the boreholes drilled it has been decided to conclude the exploratory operations. Based on the above data, an exploration report was submitted by MECL.

5.0 ORE RESERVE ESTIMATION

The work done during in the block established that the crown portion between Frockers shaft and Mc. Taggart Incline does not contain economically viable gold concentration for considering further mining. In view of the scanty mineralisation intersected in the boreholes, the exploration work was concluded.

The Deposit has been classified as Category ‘D’ of UNFC 333. The Total Cost of Exploration is Rs. 33. 87 Lakhs.

3 SURFACE PLAN OF PART OF KGF

Surface Plan of Part of KGF Showing Area For Exploration N

MYSORE MINE CHAMPION REEF MINE

F7 K16 F5 F6 K76 F3 ROBERTSON PET ANDERSONPET K15 F4 F8 K14 K13

K11 K12 H H LODE H F2 d H H un ro H G H H H H Y H NTER K53 EME H K10 C h K9 H rc H hu H H C H T ST3 H H T H H H H H H K8 T H H H H H Area for Exploration ST2 F Crockers H H H Brown Lode H H H Mc TAGGART SHAFT H 1 H H T Brown Lode Hancock TR H T Green Lode W Mc TAGGART INCLINE To Kamasamundram 2 H H Cheberi 300 M W Champion Lode H H H Red Lode H East Lode n rikuppam T Gleans Champio Ma M H on . Station T 1 . Stati H Rly SBH-16 Rly KR Road Main W il H Shaft H Ja H W T 0 Church SBH-16 Champion Lode Rowes H S+P OGRGAUM T T H H H TR H H O H o H Rly. Station ode s H H R H y's L H p H O und i H M ta Police H H l H H Police H E H H H H d D oa G H R A S H H R C H H H H OAKLEY'S R S H H K O H H O H W(Electric) KEP H L H West Prospect Lode SMITH ROAD ) Sc Bullens Exchange M ho H T ol GE CID LD Ground H H (O School O N SAFT GIFFORDS ATIO K T C H V. S G H T. o H F l T l e g COSMIC RAY W e Club West Prospect Lode Magazine Guest BLDGS H H H Sm House H ith R BGM oa d lice Magazine Po ) CHURCH (H PWD Guest H INDEX New H House Quartz Lode Survarna Bhavan D A LEASE BOUNDARY H O H RAILWAY LINE R H T T TAILING DUMP IT ROAD M S SHAFT W WORK SHOPS KE ENGG. COLLEGE M MILL LODE O OFFICE OLD WORKING AREA FOR EXPLORATION WITH HOUSING COLONY 1 H PRIORITY NOS. NO 2 WEST ROCK DUMP

4 GEOLOGICAL CROSS SECTION

WEST S-2' EAST S-2

R.L. (m) 1 MCP-2 MCP-1 MCP-3 1 1 RL 125.0755 RL 126.7159 RL 127.6805 1 1 1 0 1 1 57° 1 535X1 52° 52° 1 1 .1 1 1 1 1 1 1 1 640X0.2 680X0.5 1 200X0.2 2 2 2 2 2 2 250X0.5 2 4 2 2 2 2 4 375X1.1 6 .1 4 <0 0X 6 5 6 10 E 50X0.6 4 E D 4 6 D LO 5 LO 4 5 N 6 D E 6 E E 60X<0.1 R R 5 6 1 G 6 . 5 4 E 25 X0 4 D 5 O 7 385X0.2 L 5 4 5 245X0.8 6 6 N 5 W 4 O 4 R 5 5 4 5 B 45X<0.1 110X0.4 5 m 160 (264 BFD) 5 0 4 4 .2 OLD WORKING 9 90X0.8 4 5 -4 175 X 1.5 .D 5 T 85X2.2 4 m 100X0.4 105X1.8 4 0 .0 50 4 0m 150X0.2 -6 5 D 1. . -6 T D T.

2 SOIL 6 SCHISTOSE AMPHIBOLITE (Sch)