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Mattmark reservoir, Saas-Almagell, Saas Valley, Zermatt - Saas Fee area, Valais, Switzerlandi
Regional Level Types
Mattmark reservoirReservoir
Saas-Almagell- not defined -
Saas ValleyValley
Zermatt - Saas Fee areaArea
ValaisCanton
SwitzerlandCountry

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Latitude & Longitude (WGS84):
46° 2' 9'' North , 7° 57' 38'' East
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Name(s) in local language(s):
Stausee Mattmark, Saas-Almagell, Saastal, Gebiet Zermatt - Saas Fee, Wallis (Valais), Schweiz (Suisse; Svizzera)


Mattmark reservoir is located in the Saas Valley at a height of 2197 m a.s.l., between Rimpfischhorn (4199 m) and Stellihorn (3436 m), to the south of Saas-Almagell.

The area surrounding the reservoir is characterised by rock outcrops belonging to the Furgg zone (Bearth, 1952; Wetzel, 1972), an intensely deformed tectonic element of the Western Alps, that here separates the Monte Rosa nappe from the surrounding Bernhard nappe and Zermatt-Saas ophiolite. The characteristic lithology of the Furgg zone is represented by overprinted eclogite boudins within a matrix of schists, leucocratic gneisses, quartzites, and metacarbonates. Several serpentinite and amphibolite layers are intercalated within the boudin-bearing series. The sector to the northwest of Mattmark dam is devoid of carbonate rocks and consists of schists and leucocratic gneisses with metabasite boudins. Some of the schists contain deformed quartz pebbles and are interpreted as Permian to Lower Triassic metaconglomerates. A kyanite-talc schist within a shear zone of the Monte Rosa basement, 120 m south of its northern boundary against the Furgg zone, crops out on the eastern side of the Mattmark reservoir.

According to Liati et al. (2001), garnet in leucocratic gneiss is rich in Mn and shows chemical zoning (core: Alm33-34 Gr45-46 Py0.5 Sp20; rim: Alm39-40 Gr38-39 Py0.7 Sp20-22).

Regions containing this locality

Eurasian PlateTectonic Plate
EuropeContinent
The Alps, EuropeMountain Range

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


10 valid minerals.

Detailed Mineral List:

Albite
Formula: Na(AlSi3O8)
Reference: Liati A., Gebauer D., Froitzheim N. (2001): U-Pb SHRIMP geochronology of an amphibolitized eclogite and an orthogneiss from the Furg zone (Western Alps) and implications for its geodynamic evolution. Schweiz. Mineral. Petrogr. Mitt., 81, 379-393.
Almandine
Formula: Fe2+3Al2(SiO4)3
Reference: Liati A., Gebauer D., Froitzheim N. (2001): U-Pb SHRIMP geochronology of an amphibolitized eclogite and an orthogneiss from the Furg zone (Western Alps) and implications for its geodynamic evolution. Schweiz. Mineral. Petrogr. Mitt., 81, 379-393.
'Amphibole Supergroup'
Formula: AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Reference: Liati A., Gebauer D., Froitzheim N. (2001): U-Pb SHRIMP geochronology of an amphibolitized eclogite and an orthogneiss from the Furg zone (Western Alps) and implications for its geodynamic evolution. Schweiz. Mineral. Petrogr. Mitt., 81, 379-393.
'Clinozoisite-Epidote Series'
Reference: Liati A., Gebauer D., Froitzheim N. (2001): U-Pb SHRIMP geochronology of an amphibolitized eclogite and an orthogneiss from the Furg zone (Western Alps) and implications for its geodynamic evolution. Schweiz. Mineral. Petrogr. Mitt., 81, 379-393.
Grossular
Formula: Ca3Al2(SiO4)3
Reference: Liati A., Gebauer D., Froitzheim N. (2001): U-Pb SHRIMP geochronology of an amphibolitized eclogite and an orthogneiss from the Furg zone (Western Alps) and implications for its geodynamic evolution. Schweiz. Mineral. Petrogr. Mitt., 81, 379-393.
Kyanite
Formula: Al2(SiO4)O
Reference: Liati A., Gebauer D., Froitzheim N. (2001): U-Pb SHRIMP geochronology of an amphibolitized eclogite and an orthogneiss from the Furg zone (Western Alps) and implications for its geodynamic evolution. Schweiz. Mineral. Petrogr. Mitt., 81, 379-393.
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Keller L.M., Schmid S.M. (2001): On the kinematics of shearing near the top of the Monte Rosa nappe and the nature of the Furgg zone in Val Loranco (Antrona valley, N. Italy): tectonometamorphic and paleogeographical consequences. Schweiz. Mineral. Petrogr. Mitt., 81, 347-367.; Liati A., Gebauer D., Froitzheim N. (2001): U-Pb SHRIMP geochronology of an amphibolitized eclogite and an orthogneiss from the Furg zone (Western Alps) and implications for its geodynamic evolution. Schweiz. Mineral. Petrogr. Mitt., 81, 379-393.
Muscovite var: Phengite
Formula: KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Reference: Keller L.M., Schmid S.M. (2001): On the kinematics of shearing near the top of the Monte Rosa nappe and the nature of the Furgg zone in Val Loranco (Antrona valley, N. Italy): tectonometamorphic and paleogeographical consequences. Schweiz. Mineral. Petrogr. Mitt., 81, 347-367.; Liati A., Gebauer D., Froitzheim N. (2001): U-Pb SHRIMP geochronology of an amphibolitized eclogite and an orthogneiss from the Furg zone (Western Alps) and implications for its geodynamic evolution. Schweiz. Mineral. Petrogr. Mitt., 81, 379-393.
Quartz
Formula: SiO2
Reference: Liati A., Gebauer D., Froitzheim N. (2001): U-Pb SHRIMP geochronology of an amphibolitized eclogite and an orthogneiss from the Furg zone (Western Alps) and implications for its geodynamic evolution. Schweiz. Mineral. Petrogr. Mitt., 81, 379-393.
Talc
Formula: Mg3Si4O10(OH)2
Reference: Liati A., Gebauer D., Froitzheim N. (2001): U-Pb SHRIMP geochronology of an amphibolitized eclogite and an orthogneiss from the Furg zone (Western Alps) and implications for its geodynamic evolution. Schweiz. Mineral. Petrogr. Mitt., 81, 379-393.
Titanite
Formula: CaTi(SiO4)O
Reference: Liati A., Gebauer D., Froitzheim N. (2001): U-Pb SHRIMP geochronology of an amphibolitized eclogite and an orthogneiss from the Furg zone (Western Alps) and implications for its geodynamic evolution. Schweiz. Mineral. Petrogr. Mitt., 81, 379-393.
Zircon
Formula: Zr(SiO4)
Reference: Liati A., Gebauer D., Froitzheim N. (2001): U-Pb SHRIMP geochronology of an amphibolitized eclogite and an orthogneiss from the Furg zone (Western Alps) and implications for its geodynamic evolution. Schweiz. Mineral. Petrogr. Mitt., 81, 379-393.
Zoisite
Formula: Ca2Al3[Si2O7][SiO4]O(OH)
Reference: Keller L.M., Schmid S.M. (2001): On the kinematics of shearing near the top of the Monte Rosa nappe and the nature of the Furgg zone in Val Loranco (Antrona valley, N. Italy): tectonometamorphic and paleogeographical consequences. Schweiz. Mineral. Petrogr. Mitt., 81, 347-367.

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
Group 9 - Silicates
Albite9.FA.35Na(AlSi3O8)
Almandine9.AD.25Fe2+3Al2(SiO4)3
Grossular9.AD.25Ca3Al2(SiO4)3
Kyanite9.AF.15Al2(SiO4)O
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var: Phengite9.EC.15KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Talc9.EC.05Mg3Si4O10(OH)2
Titanite9.AG.15CaTi(SiO4)O
Zircon9.AD.30Zr(SiO4)
Zoisite9.BG.10Ca2Al3[Si2O7][SiO4]O(OH)
Unclassified Minerals, Rocks, etc.
'Amphibole Supergroup'-AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
'Clinozoisite-Epidote Series'-

List of minerals arranged by Dana 8th Edition classification

Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Almandine51.4.3a.2Fe2+3Al2(SiO4)3
Grossular51.4.3b.2Ca3Al2(SiO4)3
Insular SiO4 Groups Only with cations in >[6] coordination
Zircon51.5.2.1Zr(SiO4)
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [4] and >[4] coordination
Kyanite52.2.2c.1Al2(SiO4)O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Titanite52.4.3.1CaTi(SiO4)O
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)
Zoisite58.2.1b.1Ca2Al3[Si2O7][SiO4]O(OH)
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Talc71.2.1.3Mg3Si4O10(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Albite76.1.3.1Na(AlSi3O8)
Unclassified Minerals, Mixtures, etc.
'Amphibole Supergroup'-AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
'Clinozoisite-Epidote Series'-
Muscovite
var: Phengite
-KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2

List of minerals for each chemical element

HHydrogen
H Muscovite (var: Phengite)KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
H ZoisiteCa2Al3[Si2O7][SiO4]O(OH)
H Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
H TalcMg3Si4O10(OH)2
H MuscoviteKAl2(AlSi3O10)(OH)2
OOxygen
O Muscovite (var: Phengite)KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
O ZoisiteCa2Al3[Si2O7][SiO4]O(OH)
O ZirconZr(SiO4)
O GrossularCa3Al2(SiO4)3
O AlmandineFe32+Al2(SiO4)3
O TitaniteCaTi(SiO4)O
O AlbiteNa(AlSi3O8)
O QuartzSiO2
O Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
O TalcMg3Si4O10(OH)2
O KyaniteAl2(SiO4)O
O MuscoviteKAl2(AlSi3O10)(OH)2
FFluorine
F Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
NaSodium
Na AlbiteNa(AlSi3O8)
MgMagnesium
Mg Muscovite (var: Phengite)KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Mg TalcMg3Si4O10(OH)2
AlAluminium
Al Muscovite (var: Phengite)KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Al ZoisiteCa2Al3[Si2O7][SiO4]O(OH)
Al GrossularCa3Al2(SiO4)3
Al AlmandineFe32+Al2(SiO4)3
Al AlbiteNa(AlSi3O8)
Al Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Al KyaniteAl2(SiO4)O
Al MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Si Muscovite (var: Phengite)KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Si ZoisiteCa2Al3[Si2O7][SiO4]O(OH)
Si ZirconZr(SiO4)
Si GrossularCa3Al2(SiO4)3
Si AlmandineFe32+Al2(SiO4)3
Si TitaniteCaTi(SiO4)O
Si AlbiteNa(AlSi3O8)
Si QuartzSiO2
Si Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Si TalcMg3Si4O10(OH)2
Si KyaniteAl2(SiO4)O
Si MuscoviteKAl2(AlSi3O10)(OH)2
ClChlorine
Cl Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
KPotassium
K Muscovite (var: Phengite)KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca ZoisiteCa2Al3[Si2O7][SiO4]O(OH)
Ca GrossularCa3Al2(SiO4)3
Ca TitaniteCaTi(SiO4)O
TiTitanium
Ti TitaniteCaTi(SiO4)O
Ti Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
FeIron
Fe Muscovite (var: Phengite)KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Fe AlmandineFe32+Al2(SiO4)3
ZrZirconium
Zr ZirconZr(SiO4)

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Bearth P. (1952) Geologie und Petrographie des Monte Rosa. Beitr. Geol. Karte Schweiz (Neue Folge), 96, 94 pp.
Wetzel, R. (1972) Zur Petrographie und Mineralogie der Furgg-Zone (Monte Rosa-Decke). Schweizerische Mineralogische und Petrographische Mitteilungen, 52, 161-236.
Keller, L.M. and Schmid, S.M. (2001) On the kinematics of shearing near the top of the Monte Rosa nappe and the nature of the Furgg zone in Val Loranco (Antrona valley, N. Italy): tectonometamorphic and paleogeographical consequences. Schweizerische Mineralogische und Petrographische Mitteilungen, 81, 347-367.
Liati, A., Gebauer, D., and Froitzheim, N. (2001) U-Pb SHRIMP geochronology of an amphibolitized eclogite and an orthogneiss from the Furg zone (Western Alps) and implications for its geodynamic evolution. Schweizerische Mineralogische und Petrographische Mitteilungen, 81, 379-393.


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