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Cignana Lake (Tsignanaz Lake), Valtournanche, Valtournanche Valley, Aosta Valley, Italyi
Regional Level Types
Cignana Lake (Tsignanaz Lake)Lake
Valtournanche- not defined -
Valtournanche ValleyValley
Aosta ValleyAutonomous Region
ItalyCountry

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Key
Lock Map
Name(s) in local language(s):Lago Cignana (Lac de Tsignanaz), Valtournanche, Valle di Valtournanche, Valle d'Aosta, Italia
Latitude & Longitude (WGS84): 45° 52' 56'' North , 7° 35' 24'' East
Latitude & Longitude (decimal): 45.88236,7.59018
GeoHash:G#: u0jmh8xh0
Locality type:Lake
Köppen climate type:Dfc : Subarctic climate
Nearest Settlements:
PlacePopulationDistance
Maen176 (2014)2.5km
Valtournenche2,198 (2012)2.7km
Paquier995 (2014)2.8km
Breuil-Cervinia753 (2014)6.6km
Antey-Saint-Andrè247 (2014)8.5km


Outcrops of rocks of an ultrahigh pressure (UHP) unit, consisting of a basement of glaucophane eclogites and of a metasedimentary cover series, in which is included a Mn deposit.
Microdiamonds occur as inclusions within garnets hosted by quartzites.

Regions containing this locality

Eurasian PlateTectonic Plate
EuropeContinent
The Alps, EuropeMountain Range

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


17 valid minerals.

Detailed Mineral List:

Aegirine-augite
Formula: (NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6
Reference: Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
'Apatite'
Reference: Compagnoni Roberto , Frezzotti Maria Luce, Selverstone Jane , Sharp Zachary (2011) 9th International Eclogite Conference 2011, Mariánské Lázně, Czech Republic
Aragonite
Formula: CaCO3
Reference: Compagnoni Roberto , Frezzotti Maria Luce, Selverstone Jane , Sharp Zachary (2011) 9th International Eclogite Conference 2011, Mariánské Lázně, Czech Republic
'Ardennite'
Reference: Reinecke, T. (1989): Mg-P-Si-rich ardennite: A high-pressure phase in eclogite-facies piemontite quartzites from Cignana, Valtournanche, Western Alps. 3rd Intern. Eclogite Conf., Würzburg, Germany, April 1989, 20-21.; Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
Calderite
Formula: (Mn2+,Ca)3(Fe3+,Al)2(SiO4)3
Reference: Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
Clino-suenoite
Formula: □{Mn2+2}{Mg5}(Si8O22)(OH)2
Reference: Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
Coesite
Formula: SiO2
Reference: Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.; Compagnoni Roberto , Frezzotti Maria Luce, Selverstone Jane , Sharp Zachary (2011) 9th International Eclogite Conference 2011, Mariánské Lázně, Czech Republic
Diamond
Formula: C
Habit: microdiamonds
Reference: Compagnoni Roberto , Frezzotti Maria Luce, Selverstone Jane , Sharp Zachary (2011) 9th International Eclogite Conference 2011, Mariánské Lázně, Czech Republic
Dolomite
Formula: CaMg(CO3)2
Reference: Compagnoni Roberto , Frezzotti Maria Luce, Selverstone Jane , Sharp Zachary (2011) 9th International Eclogite Conference 2011, Mariánské Lázně, Czech Republic
Dravite
Formula: Na(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
Ferri-ghoseite
Formula: ☐[Mn2+Na][Mg4Fe3+]Si8O22(OH)2
Reference: Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
Fluorapatite
Formula: Ca5(PO4)3F
Reference: Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
'Garnet Group'
Formula: X3Z2(SiO4)3
Reference: Compagnoni Roberto , Frezzotti Maria Luce, Selverstone Jane , Sharp Zachary (2011) 9th International Eclogite Conference 2011, Mariánské Lázně, Czech Republic
Lawsonite
Formula: CaAl2(Si2O7)(OH)2 · H2O
Reference: Compagnoni Roberto , Frezzotti Maria Luce, Selverstone Jane , Sharp Zachary (2011) 9th International Eclogite Conference 2011, Mariánské Lázně, Czech Republic
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Compagnoni Roberto , Frezzotti Maria Luce, Selverstone Jane , Sharp Zachary (2011) 9th International Eclogite Conference 2011, Mariánské Lázně, Czech Republic
'Phengite'
Formula: KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Reference: Compagnoni Roberto , Frezzotti Maria Luce, Selverstone Jane , Sharp Zachary (2011) 9th International Eclogite Conference 2011, Mariánské Lázně, Czech Republic
Piemontite
Formula: {Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
Reference: Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
Quartz
Formula: SiO2
Reference: Compagnoni Roberto , Frezzotti Maria Luce, Selverstone Jane , Sharp Zachary (2011) 9th International Eclogite Conference 2011, Mariánské Lázně, Czech Republic
Rutile
Formula: TiO2
Reference: Compagnoni Roberto , Frezzotti Maria Luce, Selverstone Jane , Sharp Zachary (2011) 9th International Eclogite Conference 2011, Mariánské Lázně, Czech Republic
Spessartine
Formula: Mn2+3Al2(SiO4)3
Reference: Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
'Tourmaline'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: Compagnoni Roberto , Frezzotti Maria Luce, Selverstone Jane , Sharp Zachary (2011) 9th International Eclogite Conference 2011, Mariánské Lázně, Czech Republic
Xenotime-(Y)
Formula: Y(PO4)
Reference: Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Diamond1.CB.10aC
Group 4 - Oxides and Hydroxides
Coesite4.DA.35SiO2
Quartz4.DA.05SiO2
Rutile4.DB.05TiO2
Group 5 - Nitrates and Carbonates
Aragonite5.AB.15CaCO3
Dolomite5.AB.10CaMg(CO3)2
Group 8 - Phosphates, Arsenates and Vanadates
Fluorapatite8.BN.05Ca5(PO4)3F
Xenotime-(Y)8.AD.35Y(PO4)
Group 9 - Silicates
Aegirine-augite9.DA.20(NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6
Calderite9.AD.25(Mn2+,Ca)3(Fe3+,Al)2(SiO4)3
Clino-suenoite9.DE.□{Mn2+2}{Mg5}(Si8O22)(OH)2
Dravite9.CK.05Na(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Ferri-ghoseite9.DE.20☐[Mn2+Na][Mg4Fe3+]Si8O22(OH)2
Lawsonite9.BE.05CaAl2(Si2O7)(OH)2 · H2O
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
Piemontite9.BG.05a{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
Spessartine9.AD.25Mn2+3Al2(SiO4)3
Unclassified Minerals, Rocks, etc.
'Apatite'-
'Ardennite'-
'Garnet Group'-X3Z2(SiO4)3
'Phengite'-KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Semi-metals and non-metals
Diamond1.3.6.1C
Group 4 - SIMPLE OXIDES
AX2
Rutile4.4.1.1TiO2
Group 14 - ANHYDROUS NORMAL CARBONATES
AB(XO3)2
Dolomite14.2.1.1CaMg(CO3)2
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A5(XO4)3Zq
Fluorapatite41.8.1.1Ca5(PO4)3F
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Calderite51.4.3a.6(Mn2+,Ca)3(Fe3+,Al)2(SiO4)3
Spessartine51.4.3a.3Mn2+3Al2(SiO4)3
Group 56 - SOROSILICATES Si2O7 Groups, With Additional O, OH, F and H2O
Si2O7 Groups and O, OH, F, and H2O with cations in [4] and/or >[4] coordination
Lawsonite56.2.3.1CaAl2(Si2O7)(OH)2 · H2O
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Piemontite58.2.1a.11{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with borate groups
Dravite61.3.1.9Na(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Aegirine-augite65.1.3b.2(NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6
Group 66 - INOSILICATES Double-Width,Unbranched Chains,(W=2)
Amphiboles - Mg-Fe-Mn-Li subgroup
Ferri-ghoseite66.1.1.4☐[Mn2+Na][Mg4Fe3+]Si8O22(OH)2
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Coesite75.1.4.1SiO2
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Apatite'-
Aragonite-CaCO3
'Ardennite'-
Clino-suenoite-□{Mn2+2}{Mg5}(Si8O22)(OH)2
'Garnet Group'-X3Z2(SiO4)3
'Phengite'-KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z
Xenotime-(Y)-Y(PO4)

List of minerals for each chemical element

HHydrogen
H DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
H Clino-suenoite□{Mn22+}{Mg5}(Si8O22)(OH)2
H Ferri-ghoseite☐[Mn2+Na][Mg4Fe3+]Si8O22(OH)2
H Piemontite{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
H LawsoniteCaAl2(Si2O7)(OH)2 · H2O
H PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
H MuscoviteKAl2(AlSi3O10)(OH)2
BBoron
B DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
B TourmalineA(D3)G6(T6O18)(BO3)3X3Z
CCarbon
C DolomiteCaMg(CO3)2
C AragoniteCaCO3
C DiamondC
OOxygen
O Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
O Calderite(Mn2+,Ca)3(Fe3+,Al)2(SiO4)3
O CoesiteSiO2
O DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
O FluorapatiteCa5(PO4)3F
O Clino-suenoite□{Mn22+}{Mg5}(Si8O22)(OH)2
O Ferri-ghoseite☐[Mn2+Na][Mg4Fe3+]Si8O22(OH)2
O Piemontite{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
O SpessartineMn32+Al2(SiO4)3
O Xenotime-(Y)Y(PO4)
O Garnet GroupX3Z2(SiO4)3
O DolomiteCaMg(CO3)2
O LawsoniteCaAl2(Si2O7)(OH)2 · H2O
O PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
O AragoniteCaCO3
O RutileTiO2
O TourmalineA(D3)G6(T6O18)(BO3)3X3Z
O QuartzSiO2
O MuscoviteKAl2(AlSi3O10)(OH)2
FFluorine
F FluorapatiteCa5(PO4)3F
NaSodium
Na Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Na DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Na Ferri-ghoseite☐[Mn2+Na][Mg4Fe3+]Si8O22(OH)2
MgMagnesium
Mg Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Mg DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Mg Clino-suenoite□{Mn22+}{Mg5}(Si8O22)(OH)2
Mg Ferri-ghoseite☐[Mn2+Na][Mg4Fe3+]Si8O22(OH)2
Mg DolomiteCaMg(CO3)2
Mg PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
AlAluminium
Al Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Al Calderite(Mn2+,Ca)3(Fe3+,Al)2(SiO4)3
Al DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Al Piemontite{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
Al SpessartineMn32+Al2(SiO4)3
Al LawsoniteCaAl2(Si2O7)(OH)2 · H2O
Al PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Al MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Si Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Si Calderite(Mn2+,Ca)3(Fe3+,Al)2(SiO4)3
Si CoesiteSiO2
Si DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Si Clino-suenoite□{Mn22+}{Mg5}(Si8O22)(OH)2
Si Ferri-ghoseite☐[Mn2+Na][Mg4Fe3+]Si8O22(OH)2
Si Piemontite{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
Si SpessartineMn32+Al2(SiO4)3
Si Garnet GroupX3Z2(SiO4)3
Si LawsoniteCaAl2(Si2O7)(OH)2 · H2O
Si PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Si QuartzSiO2
Si MuscoviteKAl2(AlSi3O10)(OH)2
PPhosphorus
P FluorapatiteCa5(PO4)3F
P Xenotime-(Y)Y(PO4)
KPotassium
K PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Ca Calderite(Mn2+,Ca)3(Fe3+,Al)2(SiO4)3
Ca FluorapatiteCa5(PO4)3F
Ca Piemontite{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
Ca DolomiteCaMg(CO3)2
Ca LawsoniteCaAl2(Si2O7)(OH)2 · H2O
Ca AragoniteCaCO3
TiTitanium
Ti RutileTiO2
MnManganese
Mn Calderite(Mn2+,Ca)3(Fe3+,Al)2(SiO4)3
Mn Clino-suenoite□{Mn22+}{Mg5}(Si8O22)(OH)2
Mn Ferri-ghoseite☐[Mn2+Na][Mg4Fe3+]Si8O22(OH)2
Mn Piemontite{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
Mn SpessartineMn32+Al2(SiO4)3
FeIron
Fe Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Fe Calderite(Mn2+,Ca)3(Fe3+,Al)2(SiO4)3
Fe Ferri-ghoseite☐[Mn2+Na][Mg4Fe3+]Si8O22(OH)2
Fe PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
YYttrium
Y Xenotime-(Y)Y(PO4)

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Ma



ID: 2368452
Gewsser, Seen

Age: Anthropocene ( Ma)

Lithology: Water

Reference: Geological Institute. Geological Map of Switzerland 1:500,000. isbn: 3906723399. University of Bern. [49]

Cretaceous - Jurassic
66 - 201.3 Ma



ID: 3132029
Jurassic marble

Age: Mesozoic (66 - 201.3 Ma)

Description: low grade metamorphic

Lithology: Marble

Reference: Asch, K. The 1:5M International Geological Map of Europe and Adjacent Areas: Development and Implementation of a GIS-enabled Concept. Geologisches Jahrbuch, SA 3. [147]

Late Paleozoic
251.902 - 358.9 Ma



ID: 3187504
Paleozoic intrusive rocks

Age: Phanerozoic (251.902 - 358.9 Ma)

Comments: Alps

Lithology: Intrusive igneous rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
- Reinecke, T. (1989): Mg-P-Si-rich ardennite: A high-pressure phase in eclogite-facies piemontite quartzites from Cignana, Valtournanche, Western Alps. 3rd Intern. Eclogite Conf., Würzburg, Germany, April 1989, 20-21.
- Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo), 607 pp.
- Frezzotti, M. L. (2011): Nature Geoscience.
- Elements 9 (2013) p. 475.


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