Naveen Patnaik
Hon'ble Chief Minister
Directorate of Geology
Geology Department

Achievement of the Directorate

Since the inception of the Directorate it has contributed immensely to the mineral development sector by way of assessing the mineral resources of the state through scientific exploration. Some of the highlights of the department's achievement are:

  • Proving of 500 million tonnes of iron ore resources in Mankarnacha, Baliapahar,Khandadhar deposits of Sundargarh district
  • Assessment of 1000 million tonnes of bauxite resources through exploration in Panchpatmali (Koraput), Gandhamardan (Bolangir-Baragarh), Sasubohumali-Bhasangmali (Rayagada), Karlapat (Kalahandi), Baphlimali (Rayagada), Dholkatapahar (Keonjhar) and other small deposits.
  • Assessment of 31 million tonnes of heavy minerals (ilmenite, rutile, zircon, silimanite, garnet and monazite) in the beach sands along the Orissa coast
  • Assessment of around 18 million tonnes of chromite ore in the Sukinda Valley
  • Inventory of nickel resources of the state in the Sukinda area
  • Discovery of huge prospects of PGE mineralization in the Sukinda area through regional geochemical study
  • Assessment of 4457million tonnes of coal reserves in Talchir coalfield and 2445 million tonnes of coal in the Ib-Valley coalfield.Total proving of 9602 million tonnes of thermal (A to G) grade coal.
  • Limestone reserves of 602 million tonnes have been assessed in the Sunki, Khariar, Kotametta, Kiringsera deposits.
  • A diamondiferous lamproite rock has been discovered in the Kalmidadar area of Nuapada district through persistent exploration efforts. Potential satellite bodies of kimberlite/ lamproite have been discovered around Pokhanpadar, Supuli, Bharuamunda, Kathiwadi and Arkholi etc. in the same district.
  • 28 Gem bearing tracts have been identified through UNDP aided exploration in the Kalahandi, Nuapada, Bolangir, Boudh, Subarnapur, Anugul and Sambalpur districts.
  • 4 million tonnes of vanadiferous magnetite deposit have been established in the Betjharan-Kumardubi belt in Mayurbhanj district.
  • 253 tonnes of tin ore were assessed in the single deposit around Mohapadar, Mathili and Temurpalle in the Malkangiri district.
  • Remote Sensing study for analysis of coastal geomorphology was carried out over 1882 sq km area along the Orissa coast from Peddalakshmipuram in Ganjam district to Baliharchandi in Puri district under sponsorship of Ministry of Environment and Forest, Government of India.
  • The fireclay deposit of Talabasta area was explored and assessed.

ACTIVITIES OF THE DIRECTORATE OF GEOLOGY, ODISHA DURING PERIOD 2012-13 TO 2016-17

The Directorate of Geology is carrying out exploration of mineral resources in the state as per Mineral (Evidence & Mineral Contents) Rules-2015 using latest technologies and methodologies for basic geological data generation and augmentation of mineral resource keeping in view the Mineral Auction Policy following Amendment of the M & M (D&R) Act, 2015.
ā€¢ Planning and formulation of exploration programme for different minerals in the state is being done in the State Geological Programming Board meeting every year in consultation with Central and State Government Organizations, PSUs and other stake holder for mineral development of the state. During the last five years, the Directorate has undertaken 59 investigation programmes at various stages of United Nations Framework classification (UNFC) systems for minerals like coal, bauxite, iron ore, manganese, chromite, graphite, limestone, base metal, dolomite, heavy minerals, diamond, gemstones, PGE , dimension stone & decorative stone in the state. The achievements of the investigations and laboratories of the Directorate are briefed below.
Achievement of the Directorate of Geology, Odisha from 2012-13 to 2016-17
Directorate of Geology has under taken 59 nos. of investigation programmes in the districts of Nuapada, Jharsuguda, Sundargarh, Keonjhar, Dhenkanal, Angul, Koraput, Rayagada, Kalahandi, and Mayurbhanj during the last five years. A total of 3393 sq km area has been geologically mapped in 1:25,000 scale, 17.605 sq. km area in 1:5,000/1:2,000 scale and 5.45 sq.km area was covered by geophysical survey. Besides, 16754.9 m drilling & 1606 cum of trial excavation have been achieved. In total 7001 rock & mineral samples and 2235.99 m coal samples have been collected for analysis. 6860 kg of garnet of abrasive grade has been recovered by trial pitting.
In addition to the above one Gem testing laboratory, one Petrological laboratory, one Diamond laboratory and one mineral observation laboratory are also functioning. Commercial as well as promotional testing and characterisation of precious and semiprecious stones is being carried out in its advanced gem testing laboratory. Details of achievements in different investigations during the year are as following.
Coal:
Explorations for coal at G2 stage of UNFC has been undertaken at the behest of CMPDIL in Baitarani east block, Bhubaneswari Block, Subhadra West Block of Talcher Coalfield in Angul district and Madhupur Block of Ib Valley Coalfield in Jharsugurha district. Besides, preliminary investigation of coal around Rajbahal in Sundargarh district has been done. In Madhupur block 5 split sections of coal seam with thickness ranging from 1.70 to 28.25m have been intercepted and resource estimation is in progress.
Diamond:
Investigation for diamond around Darlimunda in Nuapada district was undertaken in G-3 stage of UNFC. In course of investigation two lamproite bodies of size 400m X 0.5 to 3.5m have been located but no incidence of diamond has been noticed.
Limestone/Dolomite:
Investigations for limestone and dolomite were taken up around Sargipali-Lephripara at G-4 level and around Tumelbud in Sundargarh district at G-3 level of UNFC. Size of Lephripara dolomite has been arrived at 1300mX100m. An inferred resource of 7.64756 million tonnes of dolomite has been assessed around Lephripara and Surgura of Sundargarh district. One G2 level exploration for limestone was under taken around Pipalmunda of Bolangir district where limestone ranging in thickness from 3.90 m to 67 m has been encountered. Resource estimation is in progress.
Heavy Minerals:
Investigation was taken up in Balarampur & Hunda-Samantaripur blocks of Puri district for assessment of heavy minerals like ilmenite, zircon, rutile, monazite & garnet. Incidence of Total Heavy Minerals ranges between 4 to 12%.
Chromite:
Investigations for chromite were taken up in Sukinda valley of Jajpur & Dhenkanal districts. In total 17 ultramafic bands have been located in Kankadahada-Kandhara and Dolia-Kulanga area of Dhenkanal district. Drilling in Talangi chromite mines encountered friable chromite bands of 1 m to 10.60m thickness. Exploration for chromite (G-2) in Tangarpada area of Dhenkanal district could not reveal any chromite lode.
Iron ore:
Iron ore investigations in Bonai-Keonjhar horse shoe belt of keonjhar & Sundargarh district have identified potential iron ore deposit around Netrabandh Pahar in sundargarh district. Resource of 81.973 million tonnes of iron ore has been estimated at G2 stage of UNFC and the block has been auctioned. Besides, 8 (eight) discontinuous magnetite bodies varying from 10m X 10m to 500m X 50m have been located around Baldela, Mangarsahi & Tilabari area of Mayurbhanj district. Assessment of iron ore in Netrabandh west block(G-2 stage) is in progress through drilling.
Manganese:
Investigations for manganese were undertaken around Kenamenta & Deoghar area of Sundargarh district & Roida ā€˜Dā€™ block of Keonjhar district. Manganese ore zone of 2.95m to 8.80m thickness has been proved in Kenamenta area through drilling. Besides, 10 discontinuous manganese pockets were delineated in Deoghar area. Investigations for manganese around Tonto and Roida area of Keonjhar District brought to light Manganiferous laterite with manganese ore over an area of 400 m X 400 m around 1 km west of Roida and in old quarries near Chormalda, Kundrupani & Roida areas. Mn percentage in 10 samples collected from west of Roida varying from 17.20 to 51.77%. Besides, float iron ore having areal spread of 300 m X 30 m has been noticed around 1km south west of Roida on the western slope of Gobru pahar and around 1km south of Kundrupani with a spread of 100 m X 50 m.
Bauxite:
Investigations for bauxite were undertaken in parts of Kalahandi, Rayagada & Koraput districts brought to light. 29 bauxite bearing plateaus with thickness of bauxite from 2 m to 12m. An inferred source of 36.61 million tonnes of bauxite around Lingapadar, jamchuan, Tebhakalam, Dumurigurha, Talisaru etc has been estimated.
Graphite:
Investigations for graphite were undertaken in parts of Angul, Dhenkanal, Kandhamal, and Rayagada districts at G-4 level of UNFC and 7 graphite occurrences measuring 2 to 700m x 10m to 200m have been delineated. Graphite mineralisation over a length of 1100m and width of 200m has been identified by Geophysical prospecting around Kanja-Karabira of Dhenkanal district. Assessment of graphite around Naringpanga at G-2 level was taken up through 18 vertical bore holes at 50 m x 50 m grid. Disseminated graphite associated with migmatised khondalite with thickness varying from 2.60 to 18 m has been encountered. Resource estimation is in progress.
Gemstone:
Investigations for gemstone carried out around Pokharidiha in Mayurbhanj district, Dumerpadar, Jillingdhar in Kalahandi and Ghagarmunda area of Dhenkanal district at G-4 level of UNFC. The investigations have brought to light occurrence of green beryl (natural emerald) around Ghasbani, Uparbeda area of Saraskana Tahasil of Mayurbhanj district. A total of 1057 gm of beryl has been recovered from Ghasbani and Uparbeda occurrences of Mayurbhanj district. Exploration for abrasive grade garnet is in progress around Sapajhar area near Khamar of Angul district. So far 1100 kg of abrasive garnet has been recovered from 35 nos. of trial pit at 100m x 100m grid. Almandine garnet, Moonstone & Corundum occurrence near Jillingdhar, Rhodolite and Almandine garnet occurrence near Ghagarmunda & Madarangamunda, Iolite and Opaque beryl occurrence near Dumerpadar in Kalahandi district have been located.
Besides the above, investigations were also conducted for PGE in Bangur area in Keonjhar district, Gold around Giringkela in Sundargarh district and for identification of dimension & decorative stone blocks in Boudh district. During the current year investigations for decorative and dimension stones around Rasol area in Dhenkanal district & Kashinagar area of Gajapati district patches of Decorative stones have been identified. Quartz and quartzite around Moter area of Kalahandi district are continuing. Further, geophysical survey for sub-surface location of basemetal to the north of Kesharpur of Mayurbhanj district is in progress.
Other important activities
The Gem testing Laboratory of the Directorate has characterized and certified 19,253 nos. of commercial samples of coloured, precious / semiprecious and organic stones and generated revenue of Rs 38,86,314/- by March, 2017.
The Petrological laboratory has completed petrographical studies of 981 samples which include 834 rock specimens collected from different investigations. Besides, grain counting of 147 heavy mineral composite samples was also undertaken for assessment of each heavy mineral
Sl# Item of work Unit 2012-13 2013-14 2014-15 2015-16 2016-17

1.

No. of Geological Explorations

No

13

13

11

11

11

2.

Geological mapping(1:25,000)

Sq km

550

502

1015

416

910

3.

Large scale mapping(1:5000/1:2000)

Sq km

4.50

3.50

2.18

3.45

3.975

4.

Trial excavation

Cu m

114

67

324

567

534

5.

Drilling

m

4203.6

2036.20

3210.00

5004.6

2300.5

6.

Sampling- Rocks/mineral

Coal sample

Nos

m

1017

663

947

734

1109

297

2607

433.68

1321

108.31

Garnet -6860 kg of abrasive grade

7.

Geophysical/Magnetic Survey/Self Potential Survey

Resistivity Sounding

Sq km


Nos

-

1.80


03

1.01


06

1.14


03

1.5


03

8.

Investigation reports approved

Nos

19

20

8

19

4

9.

Technical evaluation of Prospecting reports

Nos

-

-

-

-

57

10.

Finalisation of geological reports of auctionable blocks

Nos

-

-

-

1

3

11.

Identification of mineral blocks for upgradation of resource

Nos

-

-

-

19

8

12.

Achievement of Gem Testing laboratory

No of stones(Nos)

Revenue in Rs.

4999

9,04,950

4174

8,26,182

3459

7,24,892

3460

7,44,199

3161

6,86,091

13.

Achievement of Petrology laboratory

Rock samples(Nos)

Heavy minerals(Nos)

130

30

207

22

209

32

152

34

136

29