Gold mine known since ancient times.
"The Hutti mine is probably one of the most ancient metal mines in the world, dating to the Pre-Ashokan period. The ancient miners worked down to depths between 35m and 190m. The later which was intersected in 640 ft. level workings of the main mine in the 1890s, being the deepest known ancient working in the world. Evidences from the bottom of the ancient workings indicate that mine excavations by ancients was achieved by means of fire-setting. The carbon dating test of the old timber recovered from the bottom of ancient mine workings indicated that the ancient mining activity was about 1,900 years old." (http://www.huttigold.co.in/hutti/index/history#)

The deposit occurs within the 65 km long Hutti-Maski greenstone belt consisting of Archaean metavolcanic rocks (amphibolite and meta-rhyolite).
Gold mineralization at Hutti is confined to a series of nine parallel N-S to NNW-SSE trending, steeply dipping shear zones, that are locally referred to as reefs. From west to east the name of these reefs are (i) Main, (ii) Prospect, (iii) Oakley’s, (iv) Middle, (v) Zone-I, (vi) Village, (vii) Strike Reef Hanging Wall, (viii) Strike Reef Foot Wall and (ix) New East Reef and is situated very close to the western contact of the schist belt with granite. Currently, the mining activity is in progress in Oakley’s, Middle, Zone-I, Village, Strike Reef respectively.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.

ⓘ Gold

Mineral List

17 valid minerals.

Rock Types Recorded

Select Rock List Type

Alphabetical List Tree Diagram

ⓘ 'Dolerite'

ⓘ Metabasalt

ⓘ Schist

Detailed Mineral List:

ⓘ Arsenopyrite

Formula: FeAsS

References:

Sarma, D. S., Mcnaughton, N. J., Fletcher, I. R., Groves, D. I., Mohan, M. R., Balaram, V. (2008) TIMING OF GOLD MINERALIZATION IN THE HUTTI GOLD DEPOSIT, DHARWAR CRATON, SOUTH INDIA. Economic Geology, 103 (8) 1715-1727 doi:10.2113/gsecongeo.103.8.1715

Raju, P.V. Sunder, Sangurmath, Prabhakar (2022) The Occurrence of Platinum (Pt) and Skaergaardite (Pd Cu) in the Hutti Underground Gold Mines, Eastern Dharwar Craton, Karnataka, India. Journal of the Geological Society of India, 98 (9) 1217-1220 doi:10.1007/s12594-022-2155-2

ⓘ 'Biotite'

Formula: K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂

References:

Kolb, Jochen, Rogers, Amanda, Meyer, F. Michael (2005) Relative timing of deformation and two-stage gold mineralization at the Hutti Mine, Dharwar Craton, India. Mineralium Deposita, 40 (2) 156-174 doi:10.1007/s00126-005-0475-y

ⓘ Calcite

Formula: CaCO₃

References:

ⓘ Chalcopyrite

Formula: CuFeS₂

References:

ⓘ 'Chlorite Group'

References:

ⓘ Epidote

Formula: (CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)

References:

ⓘ Ilmenite

Formula: Fe²⁺TiO₃

References:

ⓘ 'K Feldspar'

References:

ⓘ 'Monazite Group'

Formula: REE(PO₄)

References:

ⓘ Muscovite

Formula: KAl₂(AlSi₃O₁₀)(OH)₂

References:

ⓘ Muscovite var. Sericite

Formula: KAl₂(AlSi₃O₁₀)(OH)₂

References:

ⓘ Native Gold

Formula: Au

References:

ⓘ Native Platinum

Formula: Pt

References:

ⓘ 'Plagioclase'

Formula: (Na,Ca)[(Si,Al)AlSi₂]O₈

References:

ⓘ Pyrite

Formula: FeS₂

References:

ⓘ Pyrrhotite

Formula: Fe_1-xS

References:

ⓘ Quartz

Formula: SiO₂

References:

ⓘ Quartz var. Blue Quartz

Formula: SiO₂

References:

ⓘ Rutile

Formula: TiO₂

References:

ⓘ Scheelite

Formula: Ca(WO₄)

References:

ⓘ Skaergaardite

Formula: PdCu

References:

ⓘ Sphalerite

Formula: ZnS

References:

ⓘ Titanite

Formula: CaTiO(SiO₄)

References:

ⓘ 'Tourmaline'

Formula: AD₃G₆(T₆O₁₈)(BO₃)₃X₃Z

References:

ⓘ Xenotime-(Y)

Formula: Y(PO₄)

References:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘ	Native Gold	1.AA.05	Au
ⓘ	Native Platinum	1.AF.10	Pt
ⓘ	Skaergaardite	1.AG.45	PdCu
Group 2 - Sulphides and Sulfosalts
ⓘ	Sphalerite	2.CB.05a	ZnS
ⓘ	Chalcopyrite	2.CB.10a	CuFeS₂
ⓘ	Pyrrhotite	2.CC.10	Fe_1-xS
ⓘ	Pyrite	2.EB.05a	FeS₂
ⓘ	Arsenopyrite	2.EB.20	FeAsS
Group 4 - Oxides and Hydroxides
ⓘ	Ilmenite	4.CB.05	Fe²⁺TiO₃
ⓘ	Quartz	4.DA.05	SiO₂
ⓘ	var. Blue Quartz	4.DA.05	SiO₂
ⓘ	Rutile	4.DB.05	TiO₂
Group 5 - Nitrates and Carbonates
ⓘ	Calcite	5.AB.05	CaCO₃
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘ	Scheelite	7.GA.05	Ca(WO₄)
Group 8 - Phosphates, Arsenates and Vanadates
ⓘ	Xenotime-(Y)	8.AD.35	Y(PO₄)
Group 9 - Silicates
ⓘ	Titanite	9.AG.15	CaTiO(SiO₄)
ⓘ	Epidote	9.BG.05a	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
ⓘ	Muscovite	9.EC.15	KAl₂(AlSi₃O₁₀)(OH)₂
ⓘ	var. Sericite	9.EC.15	KAl₂(AlSi₃O₁₀)(OH)₂
Unclassified
ⓘ	'Biotite'	-	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
ⓘ	'Chlorite Group'	-
ⓘ	'Monazite Group'	-	REE(PO₄)
ⓘ	'Tourmaline'	-	AD₃G₆(T₆O₁₈)(BO₃)₃X₃Z
ⓘ	'Plagioclase'	-	(Na,Ca)[(Si,Al)AlSi₂]O₈
ⓘ	'K Feldspar'	-

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
H	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
H	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
H	ⓘ Muscovite var. Sericite	KAl₂(AlSi₃O₁₀)(OH)₂
B	Boron
B	ⓘ Tourmaline	AD₃G₆(T₆O₁₈)(BO₃)₃X₃Z
C	Carbon
C	ⓘ Calcite	CaCO₃
O	Oxygen
O	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
O	ⓘ Calcite	CaCO₃
O	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
O	ⓘ Ilmenite	Fe²⁺TiO₃
O	ⓘ Monazite Group	REE(PO₄)
O	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
O	ⓘ Quartz	SiO₂
O	ⓘ Rutile	TiO₂
O	ⓘ Scheelite	Ca(WO₄)
O	ⓘ Titanite	CaTiO(SiO₄)
O	ⓘ Tourmaline	AD₃G₆(T₆O₁₈)(BO₃)₃X₃Z
O	ⓘ Xenotime-(Y)	Y(PO₄)
O	ⓘ Muscovite var. Sericite	KAl₂(AlSi₃O₁₀)(OH)₂
O	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
O	ⓘ Quartz var. Blue Quartz	SiO₂
F	Fluorine
F	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Na	Sodium
Na	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Mg	Magnesium
Mg	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Al	Aluminium
Al	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Al	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Al	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Al	ⓘ Muscovite var. Sericite	KAl₂(AlSi₃O₁₀)(OH)₂
Al	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Si	Silicon
Si	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Si	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Si	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
Si	ⓘ Quartz	SiO₂
Si	ⓘ Titanite	CaTiO(SiO₄)
Si	ⓘ Muscovite var. Sericite	KAl₂(AlSi₃O₁₀)(OH)₂
Si	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Si	ⓘ Quartz var. Blue Quartz	SiO₂
P	Phosphorus
P	ⓘ Monazite Group	REE(PO₄)
P	ⓘ Xenotime-(Y)	Y(PO₄)
S	Sulfur
S	ⓘ Arsenopyrite	FeAsS
S	ⓘ Chalcopyrite	CuFeS₂
S	ⓘ Pyrite	FeS₂
S	ⓘ Pyrrhotite	Fe_1-xS
S	ⓘ Sphalerite	ZnS
K	Potassium
K	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
K	ⓘ Muscovite	KAl₂(AlSi₃O₁₀)(OH)₂
K	ⓘ Muscovite var. Sericite	KAl₂(AlSi₃O₁₀)(OH)₂
Ca	Calcium
Ca	ⓘ Calcite	CaCO₃
Ca	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Ca	ⓘ Scheelite	Ca(WO₄)
Ca	ⓘ Titanite	CaTiO(SiO₄)
Ca	ⓘ Plagioclase	(Na,Ca)[(Si,Al)AlSi₂]O₈
Ti	Titanium
Ti	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Ti	ⓘ Ilmenite	Fe²⁺TiO₃
Ti	ⓘ Rutile	TiO₂
Ti	ⓘ Titanite	CaTiO(SiO₄)
Fe	Iron
Fe	ⓘ Arsenopyrite	FeAsS
Fe	ⓘ Biotite	K(Fe²⁺/Mg)₂(Al/Fe³⁺/Mg/Ti)([Si/Al/Fe]₂Si₂O₁₀)(OH/F)₂
Fe	ⓘ Chalcopyrite	CuFeS₂
Fe	ⓘ Epidote	(CaCa)(AlAlFe³⁺)O[Si₂O₇][SiO₄](OH)
Fe	ⓘ Ilmenite	Fe²⁺TiO₃
Fe	ⓘ Pyrite	FeS₂
Fe	ⓘ Pyrrhotite	Fe_1-xS
Cu	Copper
Cu	ⓘ Chalcopyrite	CuFeS₂
Cu	ⓘ Skaergaardite	PdCu
Zn	Zinc
Zn	ⓘ Sphalerite	ZnS
As	Arsenic
As	ⓘ Arsenopyrite	FeAsS
Y	Yttrium
Y	ⓘ Xenotime-(Y)	Y(PO₄)
Pd	Palladium
Pd	ⓘ Skaergaardite	PdCu
W	Tungsten
W	ⓘ Scheelite	Ca(WO₄)
Pt	Platinum
Pt	ⓘ Native Platinum	Pt
Au	Gold
Au	ⓘ Native Gold	Au

Other Regions, Features and Areas containing this locality

AsiaContinent

India

Karnataka
- Hutti-Maski beltBelt

Indian PlateTectonic Plate

Eastern Dharwar CratonCraton

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References

V., N. Vasudev, C., Naganna (1973) Mineragraphy of Gold-Quartz-Sulphide Reefs of Hutti Gold Mines, Raichur District, Mysore State. Journal of the Geological Society of India, 14 (4). 378-383

Iyer, G. V. Ananta, Vasudev, V. N. (1979) Geochemistry of the Archaean Metavolcanic Rocks of Kolar and Hutti Gold Fields, Karnataka, India. Journal of the Geological Society of India, 20 (9). 419-432

Sarkar, B.C.; Nair, Archana M. (2002) A Geostatistical Modelling Approach to Gold Mineralisation at Hutti Mine, Raichur District, Karnataka. Journal of the Geological Society of India, 60 (6). 639-648 doi:10.17491/jgsi/2002/600604

Sarma, D. Srinivasa; Muhling, Janet; Mohan, M. Ram; McNaughton, Neal (2008) Occurrence of Hydrothermal Phosphate Minerals in the Gold Mineralized Zones at Hutti Gold Deposit, Karnataka, South India. Journal of the Geological Society of India, 71 (2). 223-228 doi:10.17491/jgsi/2008/710207

Sakthi Saravanan, C., Mishra, B. (2009) Uniformity in sulfur isotope composition in the orogenic gold deposits from the Dharwar Craton, southern India. Mineralium Deposita, 44 (5) 597-605 doi:10.1007/s00126-009-0241-7

www.huttigold.co.in (n.d.) http://www.huttigold.co.in/hutti/index/history#

[1]Raju, P.V. Sunder, Sangurmath, Prabhakar (2022) The Occurrence of Platinum (Pt) and Skaergaardite (Pd Cu) in the Hutti Underground Gold Mines, Eastern Dharwar Craton, Karnataka, India. Journal of the Geological Society of India, 98 (9) 1217-1220 doi:10.1007/s12594-022-2155-2

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Hutti Mine, Raichur District, Karnataka, IndiaiRegional Level TypesHutti MineMine Raichur DistrictDistrict KarnatakaState IndiaCountry function showexplain() { $("#locexplain").toggle(); if (typeof movemap === "function") movemap(); }

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Detailed Mineral List:

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List of minerals arranged by Strunz 10th Edition classification

List of minerals for each chemical element

Other Regions, Features and Areas containing this locality

References

Hutti Mine, Raichur District, Karnataka, India i
Regional Level Types
Hutti Mine Mine
Raichur District District
Karnataka State
India Country