EXPLORATION REPORT ON THE EXPLORATION … REPORT ON THE EXPLORATION FOR COPPER ORE CHANDMARI SOUTHERN AND EASTERN SECTORS KHETRI COPPER BELT JHUNJHUNU DISTRICT, RAJASTHAN EXECUTIVE

C

HANDMARI SOUTHERN AND EASTERN SECTORS KHETRI COPPER BELT

JHUNJHUNU DISTRICT, RAJASTHAN

MINERAL EXPLORATION CORPORATION LIMITED (A Government of India Enterprise)

SEMINARY HILLS NAGPUR – 440006

JAIPUR AREA, JAIPUR (RAJASTHAN) MAY-1990

EXECUTIVE SUMMARY

CM-36

CM-38

TD-342.50m TD-303.50m

Section - xvi (Southern Sector)

2.30m x 0.77%

2.80m x 0.71 %

9.50m x 1.07 %

6.10m x 0.81%

2

3

4

4

5

2

150

200

250

300

350

400

450

500

N 22° ES 22° W

R.L(metres)

100

150

200

250

300

350

400

450

500

100

I N D E X

MetadoleriteAndalusite-biotite-quartz-schist/phyllite

Chlorite-biotite-quartz-schist-garnetAmphibole-quartzite with biotite & Chlorite

Talc-magnetite-amph-chlo-quartz-rock/schist

Felspathic-quartzite with amphibole

Ore body (at 0.5 % Cu cut-off)

12

3

4

5

6

2

3

2

4

4

45

R.L(metres)

2.10m x 0.81 %

5.00m x 1.26 %

EXPLORATION REPORT ON THE EXPLORATION FOR COPPER ORE CHANDMARI SOUTHERN AND EASTERN SECTORS

KHETRI COPPER BELT JHUNJHUNU DISTRICT, RAJASTHAN

EXECUTIVE SUMMARY

1.0 LOCATION

Chandmari Area (Latitude 260 00’; Longitude 750 46’) is located 1 km north west of Khetri town in Jhunjhunu district, Rajasthan. The Chandmari area forms the extreme southern part of Kolihan South block and is covered in the Survey of India Toposheet No. 44 P/16. Khetri town is well connected with Jaipur and Delhi by an all weather metalled road. The nearest railway station is Neem-Ka-Thana on the Rewari-Ringus section of the Western railway.

2.0. GEOLOGY AND STRUCTURE

The rock formations of the area belong to the Alwar and Ajabgarh groups of the Delhi Supergroup. The main rock types outcropping in the area are andalusite-biotite-quartz-schist-phyllite, amphibole-quartzite, talc-magnetite-amphibole-schist and felspathic quartzite. Quartz veins and metabasic rocks are the common intrusives.

The area has undergone intense folding, which has resulted in frequent changes in the strike of the formations in the area. The general strike of the formations in the quarry sector is N40oW – S40oE whereas in Southern and Eastern sectors the strikes are N68oW – S68oE and N80oW – S80oE respectively, with southerly dips between 30o – 50o.

3.0 MINERALISATION

Amphibole-quartzite is the main host rock for Copper mineralisation in the area. Another new lode has been encountered in talc-magnetite-amphibole-schist. The control of mineralisation is in the form of Chalcopyrite and occurs as veins, disseminations and stringers. The other sulphide minerals are pyrrhotite and pyrite.

4.0 QUANTUM OF WORK DONE

MECL has carried out detailed Geological Mapping & topographical survey covering 0.54 Sq. Km area, 6942.20 Mtrs of drilling in 22 boreholes, 1398 (1317+81) number of primary and check samples for gold, Duplicate half core samples for gold by fire assay 33 Nos were analysed. 44 Nos of composite samples are analysed for copper. 27 Nos.of samples analysed by XRF method and 39 Nos. of samples analysed for 15 radicals by semi-quantitative spectrographic analysis. Petrographic studies on 6 Nos.of samples and Minerographic studies on 29 Nos of samples was also carried out by MECL. Based on the results of above data and earlier work done by GSI a Geological report was prepared .

2

5.0 ORE RESERVE ESTIMATION

The exploration programme carried out has covered the strike length of 400 metres in the southern sector and 300 meters in the eastern sector. Exploration was confined to a vertical column of 150 metres between 350 MRL and 200 MRL. The lodes in the southern sector and the eastern sector appear to be the same set of lodes being repeated due to folding.

A total of 3.87 mt of reserve estimated with 1.08% Cu at o.50% Cu cut-off between

350 MRL and 200 MRL, out of which 3.12 mt with 0.99% Cu falls under probable category of reserves. An order of magnitude study on techno-economic aspect of the prospect indicates that the prospect can sustain 400 TPD mine with life of 20 years and the capital investment can be recovered in 9 – 10 years period.

The Deposit has been classified as Category ‘C’ of UNFC 332.

The Total Cost of Exploration is Rs. 284.29 Lakhs.

3

LOCATION MAP OF CHANDMARI AREA

Bikaner

Jaisalmer

Jodhpur

Barmer

Jalor

Pali

Sirohi

Udaipur

Chitorgarh

Dungarpur

BhilwaraBundi

Nagaur

Ajmer

Jaipur

Tonk

Kota

Jhalawar

Banswara

MADHYA PRADESH

Chambal

Churu

Ganganagar

HARYANA

DELHI

Sikar Alwar

Bharatpur

Sawai Madhopur

Jhunjhunu

Chandmari SEKhetri mine

Khetri nagarKhetri

Luni

G U J A R A T

Topographical features

Boundary, internationalBoundary, stateHeadquarters of state

Headquarters of district

Railway line

River

Singhana

75°45'Kalota

Bobai

AkwaliPapurna

Kalipahari

Bagor Dholamala

KhetriChirani

Khetri Nagar

75° 45'

MakrModhan/Kudan( Khetri mine )

KolihanChandmari SE

Bhopalgarh

72°

30°

28°

26°

24° 24°

26°

28°

30°

28° 28°

70° 74° 76° 78°

72° 70° 74° 76° 78°

P A

K I

S T

A N

4

Regional Geological Map of Khetri Copper Belt

KALA PAHAR BLOCK

CHANDAMARI INTERVEINING

BLOCK

BANWAS SOUTH BLOCK

BANWAS NORTH BLOCK

SINGHANA BLOCK SINGHANA EXTN BLOCK

5

GEOLOGICAL CROSS SECTION

CM-36

CM-38

TD-342.50m TD-303.50m

Section - xvi (Southern Sector)

2.30m x 0.77%

2.80m x 0.71 %

9.50m x 1.07 %

6.10m x 0.81%

2

3

4

4

5

2

150

200

250

300

350

400

450

500

N 22° ES 22° W

R.L(metres)

100

150

200

250

300

350

400

450

500

100

I N D E X

MetadoleriteAndalusite-biotite-quartz-schist/phyllite

Chlorite-biotite-quartz-schist-garnetAmphibole-quartzite with biotite & Chlorite

Talc-magnetite-amph-chlo-quartz-rock/schist

Felspathic-quartzite with amphibole

Ore body (at 0.5 % Cu cut-off)

12

3

4

5

6

2

3

2

4

4

45

R.L(metres)

2.10m x 0.81 %

5.00m x 1.26 %

6