Vote for your favorite mineral in #MinCup26! - Bournonite vs. Vesuvianite
Cogwheels of bournonite are up against colourful vesuvianite.
Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsThe Rock H. Currier Digital LibraryGeologic TimeExplore Fossils
Minerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral QuizTime Machine
Photo SearchPhoto GalleriesSearch by ColorPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Cogne Mines, Cogne, Aosta Valley, Italyi
Regional Level Types
Cogne MinesGroup of Mines
CogneMunicipality
Aosta ValleyAutonomous Region
ItalyCountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosMapsSearchMineralogy
05248410017272091473142.jpg
View of the Cogne iron mining area, ca. 1925.

Cogne Mines, Cogne, Aosta Valley, Italy
05248410017272091473142.jpg
View of the Cogne iron mining area, ca. 1925.

Cogne Mines, Cogne, Aosta Valley, Italy
Latitude & Longitude (WGS84):
45° 37' North , 7° 21' East
Latitude & Longitude (decimal):
Type:
Group of Mines
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Gimillan209 (2015)0.7km
Cogne767 (2014)1.2km
Epinel265 (2014)2.4km
Valsavarenche180 (2012)11.2km
Charvensod738 (2014)11.7km
Mindat Locality ID:
72512
Long-form identifier:
mindat:1:2:72512:0
GUID (UUID V4):
0
Name(s) in local language(s):
Miniere di Cogne, Cogne, Valle di Cogne, Valle d'Aosta, Italia


Old iron mines located above the Cogne village.
The most important mines are:
-Larcinaz / Larsinaz (1975-2025 m)
-Costa del Pino (2027 m)
-Colonna (2410 m)
-Liconi (2520 m)

The main exploited ore was magnetite of good quality for iron and steel industry from the Middle Ages to 1979..

In the Cogne area, magnetite mineralization occurs associated with different types of serpentinite (pseudomorphic, rodingitic and magnetite-rich serpentinites), which are also heterogeneous in terms of bulk chemical composition, mineral assemblage and mineral chemistry. The mineralization is hosted by a lizardite-, ±chrysotile-bearing serpentinite showing a pseudomorphic texture after oceanic peridotite. It contains fine-grained magnetite showing oscillatory zoning with Cr-poor cores (∼ 0.4 wt.% Cr2O3), which are surrounded by Cr-rich inner euhedral rims (up to 17.0 wt.% Cr2O3), mantled in turn by partially resorbed Cr-bearing outer rims (∼2.0 wt.% Cr2O3). In these rocks, lizardite, the primary serpentine phase, is partially overgrown by prograde antigorite, indicating that serpentinization occurred under relatively low-T conditions in a preorogenic (i.e., oceanic) setting, and was followed by an Alpine metamorphic re-equilibration. Rodingitic serpentinite and serpentinite rich in magnetite are composed of, in highly variable amounts, diopside (locally with inclusions of partially disordered graphite), calcite, magnetite, andradite/hydroandradite, prograde olivine, brucite and serpentine (mostly antigorite but also relict lizardite), with minor chlorite and accessory apatite. Magnetite content can be very high. In these rocks, magnetite is exceptionally Cr-poor (almost Cr-free).



Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

Mineral list contains entries from the region specified including sub-localities

37 valid minerals.

Rock Types Recorded


Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Andradite
Formula: Ca3Fe3+2(SiO4)3
Andradite var. Hydroandradite
Formula: Ca3Fe3+2(SiO4)3-x(OH)4x
Antigorite
Formula: Mg3(Si2O5)(OH)4
'Apatite'
Formula: Ca5(PO4)3A
Aragonite
Formula: CaCO3
Artinite
Formula: Mg2(CO3)(OH)2 · 3H2O
'Asbestos'
Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
Bornite
Formula: Cu5FeS4
Brucite
Formula: Mg(OH)2
Brugnatellite
Formula: Mg6Fe3+(CO3)(OH)13 · 4H2O
Calcite
Formula: CaCO3
Chalcocite
Formula: Cu2S
Chalcopyrite
Formula: CuFeS2
'Chlorite Group'
Chondrodite
Formula: Mg5(SiO4)2F2
'Chrome-Spinel (of Dana)'
Chromite
Formula: Fe2+Cr3+2O4
Chrysotile
Formula: Mg3(Si2O5)(OH)4
Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
Clinohumite
Formula: Mg9(SiO4)4F2
Diopside
Formula: CaMgSi2O6
Dolomite
Formula: CaMg(CO3)2
'Fayalite-Forsterite Series'
Forsterite
Formula: Mg2(SiO4)
Goethite
Formula: Fe3+O(OH)
Graphite
Formula: C
Hydromagnesite
Formula: Mg5(CO3)4(OH)2 · 4H2O
Hydroxylclinohumite var. Titanclinohumite
Formula: (Mg,Ti)9(SiO4)4(OH,O,F)2
Lansfordite
Formula: MgCO3 · 5H2O
Linnaeite
Formula: Co2+Co3+2S4
Lizardite
Formula: Mg3(Si2O5)(OH)4
Magnesite
Formula: MgCO3
Magnetite
Formula: Fe2+Fe3+2O4
Melanterite
Formula: Fe2+(H2O)6(SO4) · H2O
Nesquehonite
Formula: MgCO3 · 3H2O
'Orthopyroxene Subgroup'
Pentlandite
Formula: (NixFey)Σ9S8
Pigeonite ?
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
Pyrite
Formula: FeS2
References:
Alessandro Cantamessa collectionIdentified by Alessandro Cantamessa: Visual Identification
Pyrrhotite
Formula: Fe1-xS
'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4
'Serpentine Subgroup var. Bastite'
Formula: D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Sphalerite
Formula: ZnS
Talc
Formula: Mg3Si4O10(OH)2
Uraninite
Formula: UO2
Wollastonite
Formula: Ca3(Si3O9)
'Xenotime'

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Graphite1.CB.05aC
Group 2 - Sulphides and Sulfosalts
Chalcocite2.BA.05Cu2S
Bornite2.BA.15Cu5FeS4
Pentlandite2.BB.15(NixFey)Σ9S8
Sphalerite2.CB.05aZnS
Chalcopyrite2.CB.10aCuFeS2
Pyrrhotite2.CC.10Fe1-xS
Linnaeite2.DA.05Co2+Co3+2S4
Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
Chromite4.BB.05Fe2+Cr3+2O4
Magnetite4.BB.05Fe2+Fe3+2O4
Uraninite4.DL.05UO2
Goethite4.FD.10Fe3+O(OH)
Brucite4.FE.05Mg(OH)2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Magnesite5.AB.05MgCO3
Dolomite5.AB.10CaMg(CO3)2
Aragonite5.AB.15CaCO3
Nesquehonite5.CA.05MgCO3 · 3H2O
Lansfordite5.CA.10MgCO3 · 5H2O
Hydromagnesite5.DA.05Mg5(CO3)4(OH)2 · 4H2O
Artinite5.DA.10Mg2(CO3)(OH)2 · 3H2O
Brugnatellite5.DA.45Mg6Fe3+(CO3)(OH)13 · 4H2O
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Melanterite7.CB.35Fe2+(H2O)6(SO4) · H2O
Group 9 - Silicates
Chrysotile9.00.Mg3(Si2O5)(OH)4
Forsterite9.AC.05Mg2(SiO4)
Andradite9.AD.25Ca3Fe3+2(SiO4)3
var. Hydroandradite9.AD.25Ca3Fe3+2(SiO4)3-x(OH)4x
Chondrodite9.AF.45Mg5(SiO4)2F2
Clinohumite9.AF.55Mg9(SiO4)4F2
Hydroxylclinohumite
var. Titanclinohumite
9.AF.55(Mg,Ti)9(SiO4)4(OH,O,F)2
Pigeonite ?9.DA.10(CaxMgyFez)(Mgy1Fez1)Si2O6
Augite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
Diopside9.DA.15CaMgSi2O6
Wollastonite9.DG.05Ca3(Si3O9)
Talc9.EC.05Mg3Si4O10(OH)2
Clinochlore9.EC.55Mg5Al(AlSi3O10)(OH)8
Antigorite9.ED.15Mg3(Si2O5)(OH)4
Lizardite9.ED.15Mg3(Si2O5)(OH)4
Unclassified
'Asbestos'-
'Chlorite Group'-
'Serpentine Subgroup
var. Bastite'
-D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
'Xenotime'-
'Fayalite-Forsterite Series'-
'Chrome-Spinel (of Dana)'-
'Orthopyroxene Subgroup'-
'Serpentine Subgroup'-D3[Si2O5](OH)4
'Apatite'-Ca5(PO4)3A

List of minerals for each chemical element

HHydrogen
H AntigoriteMg3(Si2O5)(OH)4
H ArtiniteMg2(CO3)(OH)2 · 3H2O
H BrugnatelliteMg6Fe3+(CO3)(OH)13 · 4H2O
H BruciteMg(OH)2
H ChrysotileMg3(Si2O5)(OH)4
H ClinochloreMg5Al(AlSi3O10)(OH)8
H GoethiteFe3+O(OH)
H Andradite var. HydroandraditeCa3Fe23+(SiO4)3-x(OH)4x
H HydromagnesiteMg5(CO3)4(OH)2 · 4H2O
H LansforditeMgCO3 · 5H2O
H LizarditeMg3(Si2O5)(OH)4
H MelanteriteFe2+(H2O)6(SO4) · H2O
H NesquehoniteMgCO3 · 3H2O
H TalcMg3Si4O10(OH)2
H Serpentine Subgroup var. BastiteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
H Hydroxylclinohumite var. Titanclinohumite(Mg,Ti)9(SiO4)4(OH,O,F)2
H Serpentine SubgroupD3[Si2O5](OH)4
CCarbon
C AragoniteCaCO3
C ArtiniteMg2(CO3)(OH)2 · 3H2O
C BrugnatelliteMg6Fe3+(CO3)(OH)13 · 4H2O
C CalciteCaCO3
C DolomiteCaMg(CO3)2
C GraphiteC
C HydromagnesiteMg5(CO3)4(OH)2 · 4H2O
C LansforditeMgCO3 · 5H2O
C MagnesiteMgCO3
C NesquehoniteMgCO3 · 3H2O
OOxygen
O AndraditeCa3Fe23+(SiO4)3
O AntigoriteMg3(Si2O5)(OH)4
O AragoniteCaCO3
O ArtiniteMg2(CO3)(OH)2 · 3H2O
O Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
O BrugnatelliteMg6Fe3+(CO3)(OH)13 · 4H2O
O BruciteMg(OH)2
O CalciteCaCO3
O ChrysotileMg3(Si2O5)(OH)4
O ChondroditeMg5(SiO4)2F2
O ChromiteFe2+Cr23+O4
O ClinochloreMg5Al(AlSi3O10)(OH)8
O ClinohumiteMg9(SiO4)4F2
O DiopsideCaMgSi2O6
O DolomiteCaMg(CO3)2
O ForsteriteMg2(SiO4)
O GoethiteFe3+O(OH)
O Andradite var. HydroandraditeCa3Fe23+(SiO4)3-x(OH)4x
O HydromagnesiteMg5(CO3)4(OH)2 · 4H2O
O LansforditeMgCO3 · 5H2O
O LizarditeMg3(Si2O5)(OH)4
O MagnesiteMgCO3
O MagnetiteFe2+Fe23+O4
O MelanteriteFe2+(H2O)6(SO4) · H2O
O NesquehoniteMgCO3 · 3H2O
O Pigeonite(CaxMgyFez)(Mgy1Fez1)Si2O6
O TalcMg3Si4O10(OH)2
O UraniniteUO2
O WollastoniteCa3(Si3O9)
O Serpentine Subgroup var. BastiteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
O Hydroxylclinohumite var. Titanclinohumite(Mg,Ti)9(SiO4)4(OH,O,F)2
O Fayalite-Forsterite Series
O Serpentine SubgroupD3[Si2O5](OH)4
O ApatiteCa5(PO4)3A
FFluorine
F ChondroditeMg5(SiO4)2F2
F ClinohumiteMg9(SiO4)4F2
F Hydroxylclinohumite var. Titanclinohumite(Mg,Ti)9(SiO4)4(OH,O,F)2
MgMagnesium
Mg AntigoriteMg3(Si2O5)(OH)4
Mg ArtiniteMg2(CO3)(OH)2 · 3H2O
Mg Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mg BrugnatelliteMg6Fe3+(CO3)(OH)13 · 4H2O
Mg BruciteMg(OH)2
Mg ChrysotileMg3(Si2O5)(OH)4
Mg ChondroditeMg5(SiO4)2F2
Mg ClinochloreMg5Al(AlSi3O10)(OH)8
Mg ClinohumiteMg9(SiO4)4F2
Mg DiopsideCaMgSi2O6
Mg DolomiteCaMg(CO3)2
Mg ForsteriteMg2(SiO4)
Mg HydromagnesiteMg5(CO3)4(OH)2 · 4H2O
Mg LansforditeMgCO3 · 5H2O
Mg LizarditeMg3(Si2O5)(OH)4
Mg MagnesiteMgCO3
Mg NesquehoniteMgCO3 · 3H2O
Mg Pigeonite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mg TalcMg3Si4O10(OH)2
Mg Serpentine Subgroup var. BastiteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Mg Hydroxylclinohumite var. Titanclinohumite(Mg,Ti)9(SiO4)4(OH,O,F)2
Mg Fayalite-Forsterite Series
AlAluminium
Al ClinochloreMg5Al(AlSi3O10)(OH)8
Al Serpentine Subgroup var. BastiteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
SiSilicon
Si AndraditeCa3Fe23+(SiO4)3
Si AntigoriteMg3(Si2O5)(OH)4
Si Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Si ChrysotileMg3(Si2O5)(OH)4
Si ChondroditeMg5(SiO4)2F2
Si ClinochloreMg5Al(AlSi3O10)(OH)8
Si ClinohumiteMg9(SiO4)4F2
Si DiopsideCaMgSi2O6
Si ForsteriteMg2(SiO4)
Si Andradite var. HydroandraditeCa3Fe23+(SiO4)3-x(OH)4x
Si LizarditeMg3(Si2O5)(OH)4
Si Pigeonite(CaxMgyFez)(Mgy1Fez1)Si2O6
Si TalcMg3Si4O10(OH)2
Si WollastoniteCa3(Si3O9)
Si Serpentine Subgroup var. BastiteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Si Hydroxylclinohumite var. Titanclinohumite(Mg,Ti)9(SiO4)4(OH,O,F)2
Si Fayalite-Forsterite Series
Si Serpentine SubgroupD3[Si2O5](OH)4
PPhosphorus
P ApatiteCa5(PO4)3A
SSulfur
S BorniteCu5FeS4
S ChalcopyriteCuFeS2
S ChalcociteCu2S
S LinnaeiteCo2+Co23+S4
S MelanteriteFe2+(H2O)6(SO4) · H2O
S Pentlandite(NixFey)Σ9S8
S PyriteFeS2
S PyrrhotiteFe1-xS
S SphaleriteZnS
CaCalcium
Ca AndraditeCa3Fe23+(SiO4)3
Ca AragoniteCaCO3
Ca Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Ca CalciteCaCO3
Ca DiopsideCaMgSi2O6
Ca DolomiteCaMg(CO3)2
Ca Andradite var. HydroandraditeCa3Fe23+(SiO4)3-x(OH)4x
Ca Pigeonite(CaxMgyFez)(Mgy1Fez1)Si2O6
Ca WollastoniteCa3(Si3O9)
Ca ApatiteCa5(PO4)3A
TiTitanium
Ti Hydroxylclinohumite var. Titanclinohumite(Mg,Ti)9(SiO4)4(OH,O,F)2
CrChromium
Cr ChromiteFe2+Cr23+O4
MnManganese
Mn Serpentine Subgroup var. BastiteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
FeIron
Fe AndraditeCa3Fe23+(SiO4)3
Fe Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Fe BorniteCu5FeS4
Fe BrugnatelliteMg6Fe3+(CO3)(OH)13 · 4H2O
Fe ChalcopyriteCuFeS2
Fe ChromiteFe2+Cr23+O4
Fe GoethiteFe3+O(OH)
Fe Andradite var. HydroandraditeCa3Fe23+(SiO4)3-x(OH)4x
Fe MagnetiteFe2+Fe23+O4
Fe MelanteriteFe2+(H2O)6(SO4) · H2O
Fe Pentlandite(NixFey)Σ9S8
Fe Pigeonite(CaxMgyFez)(Mgy1Fez1)Si2O6
Fe PyriteFeS2
Fe PyrrhotiteFe1-xS
Fe Serpentine Subgroup var. BastiteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Fe Fayalite-Forsterite Series
CoCobalt
Co LinnaeiteCo2+Co23+S4
NiNickel
Ni Pentlandite(NixFey)Σ9S8
Ni Serpentine Subgroup var. BastiteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
CuCopper
Cu BorniteCu5FeS4
Cu ChalcopyriteCuFeS2
Cu ChalcociteCu2S
ZnZinc
Zn SphaleriteZnS
Zn Serpentine Subgroup var. BastiteD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
UUranium
U UraniniteUO2

Localities in this Region

Other Regions, Features and Areas containing this locality

Eurasian PlateTectonic Plate
  • AlpsAccretionary Complex
EuropeContinent

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

 
and/or  
Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: September 4, 2026 05:55:32 Page updated: August 19, 2026 16:17:56
Go to top of page