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Hogenakal, Krishnagiri District, Tamil Nadu, Indiai
Regional Level Types
HogenakalComplex
Krishnagiri DistrictDistrict
Tamil NaduState
IndiaCountry

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Latitude & Longitude (WGS84):
12° 10' North , 77° 47' East
Latitude & Longitude (decimal):
12.16667,77.78333
GeoHash:
G#: tdpm4nb5g
GRN:
N09E54
Type:
Complex
KΓΆppen climate type:
Aw : Tropical savanna, wet
Mindat Locality ID:
336030
Long-form identifier:
mindat:1:2:336030:2
GUID (UUID V4):
95ca3af7-07ef-4e5e-a57f-df31665f70ce


Carbonatites to the NNE of Hoganakal form a series of discontinuous bodies within 2 parallel pyroxenite dikes that intrude Precambrian charnockites. The more westerly dike is c. 3km long and more easterly 14km, and each carbonatite body consists of discrete veins and lenses, which are described as permeating and soaking the surrounding pyroxenite to various degrees, such that hybrid types have been generated.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


11 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

β“˜ Aegirine-augite
Formula: (NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6
β“˜ Albite
Formula: Na(AlSi3O8)
β“˜ Albite var. Oligoclase
Formula: (Na,Ca)[Al(Si,Al)Si2O8]
β“˜ 'Allanite Group'
Formula: (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
β“˜ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
β“˜ Calcite
Formula: CaCO3
β“˜ Diopside
Formula: CaMgSi2O6
β“˜ Diopside var. Salite
β“˜ 'Fayalite-Forsterite Series'
β“˜ 'Feldspar Group'
β“˜ 'Feldspar Group var. Perthite'
β“˜ 'Hornblende Root Name Group'
Formula: ◻Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2
β“˜ Humite
Formula: Mg7(SiO4)3F2
β“˜ Katophorite
Formula: {Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
β“˜ 'K Feldspar'
β“˜ 'Monazite'
Formula: REE(PO4)
β“˜ Orthoclase
Formula: K(AlSi3O8)
β“˜ Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
β“˜ 'Pyroxene Group'
Formula: ADSi2O6
β“˜ Riebeckite
Formula: ◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2
β“˜ 'Scapolite'
β“˜ Titanite
Formula: CaTi(SiO4)O
β“˜ Zircon
Formula: Zr(SiO4)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 5 - Nitrates and Carbonates
β“˜Calcite5.AB.05CaCO3
Group 9 - Silicates
β“˜Zircon9.AD.30Zr(SiO4)
β“˜Humite9.AF.50Mg7(SiO4)3F2
β“˜Titanite9.AG.15CaTi(SiO4)O
β“˜Diopside9.DA.15CaMgSi2O6
β“˜var. Salite9.DA.15CaMgSi2O6
β“˜Aegirine-augite9.DA.20(NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6
β“˜Katophorite9.DE.20{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
β“˜Riebeckite9.DE.25β—»[Na2][Fe2+3Fe3+2]Si8O22(OH)2
β“˜Phlogopite9.EC.20KMg3(AlSi3O10)(OH)2
β“˜Orthoclase9.FA.30K(AlSi3O8)
β“˜Albite
var. Oligoclase		9.FA.35(Na,Ca)[Al(Si,Al)Si2O8]
β“˜9.FA.35Na(AlSi3O8)
Unclassified
β“˜'Monazite'-REE(PO4)
β“˜'Feldspar Group
var. Perthite'		-
β“˜'Fayalite-Forsterite Series'-
β“˜'Scapolite'-
β“˜'Hornblende Root Name Group'-β—»Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2
β“˜'K Feldspar'-
β“˜'Pyroxene Group'-ADSi2O6
β“˜'Feldspar Group'-
β“˜'Apatite'-Ca5(PO4)3(Cl/F/OH)
β“˜'Allanite Group'-(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)

List of minerals for each chemical element

HHydrogen
Hβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
Hβ“˜ Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Hβ“˜ Katophorite{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
Hβ“˜ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Hβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
Hβ“˜ Allanite Group(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
CCarbon
Cβ“˜ CalciteCaCO3
OOxygen
Oβ“˜ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Oβ“˜ AlbiteNa(AlSi3O8)
Oβ“˜ CalciteCaCO3
Oβ“˜ DiopsideCaMgSi2O6
Oβ“˜ HumiteMg7(SiO4)3F2
Oβ“˜ MonaziteREE(PO4)
Oβ“˜ Albite var. Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
Oβ“˜ OrthoclaseK(AlSi3O8)
Oβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
Oβ“˜ Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Oβ“˜ TitaniteCaTi(SiO4)O
Oβ“˜ ZirconZr(SiO4)
Oβ“˜ Katophorite{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
Oβ“˜ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Oβ“˜ Pyroxene GroupADSi2O6
Oβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
Oβ“˜ Allanite Group(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
FFluorine
Fβ“˜ HumiteMg7(SiO4)3F2
Fβ“˜ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Fβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
Naβ“˜ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Naβ“˜ AlbiteNa(AlSi3O8)
Naβ“˜ Albite var. Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
Naβ“˜ Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Naβ“˜ Katophorite{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
MgMagnesium
Mgβ“˜ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Mgβ“˜ DiopsideCaMgSi2O6
Mgβ“˜ HumiteMg7(SiO4)3F2
Mgβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
Mgβ“˜ Katophorite{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
AlAluminium
Alβ“˜ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Alβ“˜ AlbiteNa(AlSi3O8)
Alβ“˜ Albite var. Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
Alβ“˜ OrthoclaseK(AlSi3O8)
Alβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
Alβ“˜ Katophorite{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
Alβ“˜ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
SiSilicon
Siβ“˜ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Siβ“˜ AlbiteNa(AlSi3O8)
Siβ“˜ DiopsideCaMgSi2O6
Siβ“˜ HumiteMg7(SiO4)3F2
Siβ“˜ Albite var. Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
Siβ“˜ OrthoclaseK(AlSi3O8)
Siβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
Siβ“˜ Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Siβ“˜ TitaniteCaTi(SiO4)O
Siβ“˜ ZirconZr(SiO4)
Siβ“˜ Katophorite{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
Siβ“˜ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Siβ“˜ Pyroxene GroupADSi2O6
Siβ“˜ Allanite Group(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
PPhosphorus
Pβ“˜ MonaziteREE(PO4)
Pβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
ClChlorine
Clβ“˜ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Clβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
Kβ“˜ OrthoclaseK(AlSi3O8)
Kβ“˜ PhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
Caβ“˜ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Caβ“˜ CalciteCaCO3
Caβ“˜ DiopsideCaMgSi2O6
Caβ“˜ Albite var. Oligoclase(Na,Ca)[Al(Si,Al)Si2O8]
Caβ“˜ TitaniteCaTi(SiO4)O
Caβ“˜ Katophorite{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
Caβ“˜ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Caβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
TiTitanium
Tiβ“˜ TitaniteCaTi(SiO4)O
FeIron
Feβ“˜ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Feβ“˜ Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
ZrZirconium
Zrβ“˜ ZirconZr(SiO4)

Geochronology

Mineralization age: Neochaotian to Cambrian : ~4600 Ma to 541 Β± 1.0 Ma

Important note: This table is based only on rock and mineral ages recorded on mindat.org for this locality and is not necessarily a complete representation of the geochronology, but does give an indication of possible mineralization events relevant to this locality. As more age information is added this table may expand in the future. A break in the table simply indicates a lack of data entered here, not necessarily a break in the geologic sequence. Grey background entries are from different, related, localities.

Geologic TimeRocks, Minerals and Events
Precambrian
β“˜ Charnockitic granitePrecambrian
(541 - 4600 Ma)
 
  
 Proterozoic
  Paleoproterozoic
   Orosirian
β“˜ Carbonatite (youngest age)1990 Β± 50 Ma
    
    
   Siderian
β“˜ Carbonatite (oldest age)2436 Β± 154 Ma
    

Other Regions, Features and Areas containing this locality

AsiaContinent
Indian Plate (India Plate)Tectonic Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Natarajana, M., Rao, B. B., Parthasarathy, R., Kumar, A., & Gopalan, K. (1994). 2.0 ga old pyroxenite-carbonatite complex of Hogenakal, Tamil Nadu, south India. Precambrian Research, 65(1-4), 167-181.
Woolley A.R. (2019) Alkaline Rocks and Carbonatites of the World. Part 4: Antarctica, Asia and Europe, p.110
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