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Colle San Carlo area (Col Saint-Charles area; Col d'Arpy area), Morgex, Aosta Valley, Italyi
Regional Level Types
Colle San Carlo area (Col Saint-Charles area; Col d'Arpy area)Mountain Area
MorgexCommune
Aosta ValleyAutonomous Region
ItalyCountry

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Key
Latitude & Longitude (WGS84):
45° 45' 0'' North , 6° 59' 21'' East
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Other Languages:
French:
Région du Col Saint-Charles (Région du Col d'Arpy), Morgex, Vallée d'Aoste, Italie
Italian:
Area del Colle San Carlo (Area del Colle d'Arpy), Morgex, Valle d'Aosta, Italia


Colle San Carlo (45°44'33" N, 6°59'28" E), also known as Col Saint-Charles or Col d'Arpy, is a pass at 1951 m a.s.l., located in the vicinity of Tête d'Arpy, connecting Morgex and the Arpy Valley to La Thuile (Dora di Verney Valley).

In the Colle San Carlo area the tectonic contact between the "Zone Houillère" and the Versoyen units is marked by a large (ca. 100 m) belt of gypsum, which enabled the tectonic displacement. The large Triassic gypsum outcrop, located at Plan de Buillet (1980 m) in the municipal territories of Morgex and La Thuile, is characterised by the presence of numerous dolines and shinkholes above the forest track leading to Lac d'Arpy.

The so-called Colle San Carlo anatase occurrence is located to the north of Colle San Carlo, in the municipal territory of Morgex, inside the dense conifer forest that characterises the left side of the lower Dora di Verney Valley. This occurrence is usually indicated by the mineral collectors as "Colle San Carlo, La Thuile" or just as "La Thuile", because it is generally reached from La Thuile, following the road SR 39 towards Colle San Carlo until the parking area next to the road which leads to the village of Petosan. The hike from the parking area to the mineral occurrence, via Petosan, takes about 50-60 minutes.

Regions containing this locality

Eurasian PlateTectonic Plate
EuropeContinent
The Alps, EuropeMountain Range

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


7 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and 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:

Anatase
Formula: TiO2
Reference: Vineis, M. (2002) Gli anatasi del Colle S. Carlo (La Thuile - Valle d'Aosta.) MacroMicro, 2002-4, 10; Piccoli, G.C., Maletto, G., Bosio, P., and Lombardo, B. (2007) Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" di Alba, L'Artigiana Srl - Azienda Grafica, Alba (Cuneo), 607 pp.
'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Reference: Vineis, M. (2002) Gli anatasi del Colle S. Carlo (La Thuile - Valle d'Aosta.) MacroMicro, 2002-4, 10
Brookite
Formula: TiO2
Reference: Personally collected by Flavio G. Taricco; Vineis, M. (2002) Gli anatasi del Colle S. Carlo (La Thuile - Valle d'Aosta.) MacroMicro, 2002-4, 10
Calcite
Formula: CaCO3
Reference: Vineis, M. (2002) Gli anatasi del Colle S. Carlo (La Thuile - Valle d'Aosta.) MacroMicro, 2002-4, 10
Gypsum
Formula: CaSO4 · 2H2O
Description: From the Triassic evaporite outcrop.
Reference: Valente, A., and Borghi, A. (2000) Tectono-metamorphic evolution of the anthracite-bearing basin of La Thuile (External Briançonnais Zone). Géologie Alpine, 76, 151-163.
Monazite-(Ce)
Formula: Ce(PO4)
Reference: Graziano Del Core photo & collection
Quartz
Formula: SiO2
Reference: Personally collected by Flavio G. Taricco; Vineis, M. (2002) Gli anatasi del Colle S. Carlo (La Thuile - Valle d'Aosta.) MacroMicro, 2002-4, 10
Siderite
Formula: FeCO3
Reference: Vineis, M. (2002) Gli anatasi del Colle S. Carlo (La Thuile - Valle d'Aosta.) MacroMicro, 2002-4, 10

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Anatase4.DD.05TiO2
Brookite4.DD.10TiO2
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Siderite5.AB.05FeCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Gypsum7.CD.40CaSO4 · 2H2O
Group 8 - Phosphates, Arsenates and Vanadates
Monazite-(Ce)8.AD.50Ce(PO4)
Unclassified Minerals, Rocks, etc.
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2

List of minerals arranged by Dana 8th Edition classification

Group 4 - SIMPLE OXIDES
AX2
Anatase4.4.4.1TiO2
Brookite4.4.5.1TiO2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Siderite14.1.1.3FeCO3
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Gypsum29.6.3.1CaSO4 · 2H2O
Group 38 - ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
AXO4
Monazite-(Ce)38.4.3.1Ce(PO4)
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2

List of minerals for each chemical element

HHydrogen
H GypsumCaSO4 · 2H2O
H BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
CCarbon
C SideriteFeCO3
C CalciteCaCO3
OOxygen
O AnataseTiO2
O QuartzSiO2
O BrookiteTiO2
O Monazite-(Ce)Ce(PO4)
O GypsumCaSO4 · 2H2O
O BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
O SideriteFeCO3
O CalciteCaCO3
FFluorine
F BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
MgMagnesium
Mg BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
AlAluminium
Al BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
SiSilicon
Si QuartzSiO2
Si BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
PPhosphorus
P Monazite-(Ce)Ce(PO4)
SSulfur
S GypsumCaSO4 · 2H2O
KPotassium
K BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
CaCalcium
Ca GypsumCaSO4 · 2H2O
Ca CalciteCaCO3
TiTitanium
Ti AnataseTiO2
Ti BrookiteTiO2
FeIron
Fe BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Fe SideriteFeCO3
CeCerium
Ce Monazite-(Ce)Ce(PO4)

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Valente, A., and Borghi, A. (2000) Tectono-metamorphic evolution of the anthracite-bearing basin of La Thuile (External Briançonnais Zone). Géologie Alpine, 76, 151-163.
Vineis, M. (2002) Gli anatasi del Colle S. Carlo (La Thuile - Valle d'Aosta.) MacroMicro, 2002-4, 10; https://apmpsite.files.wordpress.com/2016/11/apmp-04.pdf
Piccoli, G.C., Maletto, G., Bosio, P., and Lombardo, B. (2007) Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" di Alba, L'Artigiana Srl - Azienda Grafica, Alba (Cuneo), 607 pp.


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