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Chaz Duraz Mt. (Chaz Dura Mt.), La Thuile, Aosta Valley, Italyi
Regional Level Types
Chaz Duraz Mt. (Chaz Dura Mt.)Mountain
La ThuileMunicipality
Aosta ValleyAutonomous Region

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Name in French:Mont Chaz Duraz, La Thuile, Vallée d'Aoste, Italie
Name in Italian:Monte Chaz Duraz (Monte Chaz Dura), La Thuile, Valle d'Aosta, Italia
Latitude & Longitude (WGS84): 45° 41' 35'' North , 6° 54' 56'' East
Latitude & Longitude (decimal): 45.69310,6.91563
GeoHash:G#: u0hgvq5v9
Locality type:Mountain
Köppen climate type:Dfc : Subarctic climate
Nearest Settlements:
La Thuile762 (2014)3.6km
Prè Saint Didier258 (2014)9.6km
Pallusieux294 (2014)10.2km
Montvalezan627 (2016)10.5km
Verrand276 (2014)10.9km

Pelitic-psammitic schists ("Zone Houillère" unit, Briançonnais terrane), with abundant lenses of quartz elongated parallel to the foliation planes, along the north slope of Mont Chaz Duraz. Rock crystals (often with chlorite inclusions) are found in fissures running perpendicular to the bedding of the schistous host rock.

Regions containing this locality

Eurasian PlateTectonic Plate
The Alps, EuropeMountain Range

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

2 valid minerals.

Detailed Mineral List:

Formula: CaCO3
Reference: Del Caldo, A., Moro, C., Gramaccioli, C.M., and Boscardin, M. (1973) Guida ai minerali. Fratelli Fabbri Editori, Milano, 208 pp.
'Chlorite Group'
Reference: Amir Akhavan Collection
Formula: SiO2
Description: Rock crystals (often with chlorite inclusions) in fissures running perpendicular to the bedding of the schistous host rock.
Reference: Del Caldo, A., Moro, C., Gramaccioli, C.M., and Boscardin, M. (1973) Guida ai minerali. Fratelli Fabbri Editori, Milano, 208 pp.

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Group 5 - Nitrates and Carbonates
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-

List of minerals arranged by Dana 8th Edition classification

Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Unclassified Minerals, Mixtures, etc.
'Chlorite Group'-

List of minerals for each chemical element

C AragoniteCaCO3
O AragoniteCaCO3
O QuartzSiO2
Si QuartzSiO2
Ca AragoniteCaCO3

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

Late Paleozoic
251.902 - 358.9 Ma

ID: 3186756
Paleozoic sedimentary rocks

Age: Phanerozoic (251.902 - 358.9 Ma)

Lithology: Sedimentary 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]

298.9 - 358.9 Ma

ID: 3162002
Houiller Briançonnais

Age: Carboniferous (298.9 - 358.9 Ma)

Description: molasse

Lithology: Shale/slate

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]

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


Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Del Caldo, A., Moro, C., Gramaccioli, C.M., and Boscardin, M. (1973) Guida ai minerali. Fratelli Fabbri Editori, Milano, 208 pp.
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.

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