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Maria Luisa Refuge area, Formazza, Formazza Valley, Ossola Valley, Verbano-Cusio-Ossola Province, Piedmont, Italy

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Location is approximate, estimate based on other nearby localities.
 
Latitude & Longitude (WGS84): 46° 3' 23'' North , 8° 19' 17'' East (est.)
Margin of Error:~0km
Locality type:Area
Köppen climate type:Dfc : Subarctic climate
Name(s) in local language(s):Area del Rifugio Maria Luisa, Formazza (Pomatt), Val Formazza (Pomattertal), Val d'Ossola, Provincia del Verbano-Cusio-Ossola, Piemonte, Italia


Rifugio Maria Luisa is located in Val Toggia/Toggiatal at 2150 m a.s.l., on the plateau known as Alpe Toggia/Im Moos, near the dam of the Toggia hydroelectric reservoir (Bacino del Toggia; Lago Toggia/Fischsee). At the upper end of Val Toggia, drained by Rio Roni, San Giacomo Pass (2313 m) connects Formazza Valley with Bedretto Valley, Ticino (Switzerland). To the south of San Giacomo Pass, the left orographic side of Val Toggia is edged by the ridge including Marchhorn/Punta del Termine (2962 m), Pizzo Fiorina (2925 m), Bocchetta di Val Maggia (2635 m), Corni di Boden (*), Bocchetta del Castel/Kastellücke (2714 m), and Kastelhorn/Punta del Castel (3128 m). Laghi del Boden (2348 m and 2342 m) and Lago Castel/Kastelsee (2216 m) are located below this ridge. Near Rifugio Maria Luisa are located the mouths of two right-side valleys of Val Toggia: Valrossa/Rotental, surrounded by Corno Mutt (2782 m), Corno Brunni (2862 m), Grieshorn/Corno Gries (2968 m), Rotentalhorn/Punta di Val Rossa (2968 m), and Elgenhorn/Punta di Elgio (2837 m); and the little Vallone delle Marmotte, surrounded by the E and SE flanks of Corno Brunni and SW and S flanks of Corno Mutt.


Quartz is the typical mineral of this area and the drusy aggregates of very elongated hyaline crystals (sometimes containing splendid Japanese twins up to 4 cm), which are found inside the clefts in schistose rocks in the neighbourhood of Rio Roni (below Alpe Toggia) and San Giacomo Pass, are particularly renowned. From these occurrences, dark amber anatase crystals and minor brookite are also typical. Different colours (commonly yellow to yellow-brown, less frequently red-brown, rarely black-blue) can be shown by the anatase crystals from Pizzo Fiorina and Corni di Boden. Also rutile, the other polymorph of titanium dioxide, forms good crystals in this area, occurring at various sites in Valrossa/Rotental, Val Toggia and at Marchhorn/Punta del Termine.

Titanite, a widespread mineral at many sites of the upper Formazza Valley, is particularly abundant in the neighbourhood of Rifugio Maria Luisa. Yellow-brown to reddish-brown titanite crystals are found inside the clefts, containing abundant adularia, that cut a heavily fractured schist outcropping from the grassy knolls in proximity of the refuge (mainly near Alpe Teller at the mouth of Vallone delle Marmotte, as well as in Valrossa/Rotental).

Kyanite is typically found at Kastelhorn/Punta del Castel and in the neighbourhood of Lago Castel.


(*) Corni di Boden (unnamed on maps) is the name of the ridge comprised between Bocchetta di Val Maggia to the north and Bocchetta del Castel/Kastellücke to the south.

Regions containing this locality

The Alps, Europe

Mountain Range - 2,211 mineral species & varietal names listed

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

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

24 valid minerals.

Detailed Mineral List:

Actinolite
Formula: ☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Albite
Formula: Na(AlSi3O8)
Albite var: Pericline
Formula: Na(AlSi3O8)
Anatase
Formula: TiO2
Reference: Alberto Vaghi Mindat Collection; Mattioli V. (1979): Minerali Ossolani. Ed. Arti Grafiche Medesi, Milano, 268 pp.; Piccoli G.C., Maletto G., Bosio P., Lombardo B. (2007): Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" di Alba, Ed., Alba, 607 pp.
Anhydrite
Formula: CaSO4
Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
'Apatite'
Brookite
Formula: TiO2
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, 607 pp.
Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
Reference: Van King; Mattioli V. (1979): Minerali Ossolani. Ed. Arti Grafiche Medesi, Milano, 268 pp.
Dravite
Formula: Na(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: Mattioli, V. (1979): Minerali Ossolani. Ed. Arti Grafiche Medesi, Milano, 268 pp.
'Garnet Group'
Formula: X3Z2(SiO4)3
Reference: Del Caldo A., Moro C., Gramaccioli C.M., Boscardin M. (1973): Guida ai minerali. Fratelli Fabbri Editori, Milano, 208 pp.
Gypsum
Formula: CaSO4 · 2H2O
Hematite
Formula: Fe2O3
Hematite var: Iron Rose
Formula: Fe2O3
'Hornblende'
Hydrozincite
Formula: Zn5(CO3)2(OH)6
Kaolinite
Formula: Al2(Si2O5)(OH)4
'K Feldspar'
Reference: Van King; Albertini C., Milanesi D. (2001): Valli Antigorio e Formazza: le titaniti. Riv. Mineral. Ital., 25, 2 (2-2001), 71-84.
'K Feldspar var: Adularia'
Formula: KAlSi3O8
Reference: Van King; Albertini C., Milanesi D. (2001): Valli Antigorio e Formazza: le titaniti. Riv. Mineral. Ital., 25, 2 (2-2001), 71-84.
Kyanite
Formula: Al2(SiO4)O
Reference: Scaini G. (1960): La cianite in Val Formazza. Natura, 51, 1, 25; Del Caldo A., Moro C., Gramaccioli C.M., Boscardin M. (1973): Guida ai minerali. Fratelli Fabbri Editori, Milano, 208 pp.; Mattioli V. (1979): Minerali Ossolani. Ed. Arti Grafiche Medesi, Milano, 268 pp.; 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.
Microcline
Formula: K(AlSi3O8)
Reference: Van King
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Mattioli V. (1979): Minerali Ossolani. Ed. Arti Grafiche Medesi, Milano, 268 pp.
Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Prehnite
Formula: Ca2Al2Si3O10(OH)2
Reference: Sergio Varvello find & collection.
Pyrite
Formula: FeS2
Reference: Sergio Varvello find; Mattioli V. (1979): Minerali Ossolani. Ed. Arti Grafiche Medesi, Milano, 268 pp.
Quartz
Formula: SiO2
Reference: Van King; Mattioli V. (1979): Minerali Ossolani. Ed. Arti Grafiche Medesi, Milano, 268 pp.; Piccoli G.C., Maletto G., Bosio P., Lombardo B. (2007): Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" di Alba, Ed., Alba, 607 pp.
Quartz var: Smoky Quartz
Formula: SiO2
Rutile
Formula: TiO2
Reference: Van King; Mattioli V. (1979): Minerali Ossolani. Ed. Arti Grafiche Medesi, Milano, 268 pp.; Piccoli G.C., Maletto G., Bosio P., Lombardo B. (2007): Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" di Alba, Ed., Alba, 607 pp.
Scolecite
Formula: CaAl2Si3O10 · 3H2O
Reference: Sergio Varvello find & collection.
Siderite
Formula: FeCO3
Reference: Mattioli V. (1979): Minerali Ossolani. Ed. Arti Grafiche Medesi, Milano, 268 pp.
Staurolite
Formula: Fe2+2Al9Si4O23(OH)
Reference: Mattioli V. (1979): Minerali Ossolani. Ed. Arti Grafiche Medesi, Milano, 268 pp.
Titanite
Formula: CaTi(SiO4)O
Reference: Alberto Vaghi collection; Albertini C., Milanesi D. (2001): Valli Antigorio e Formazza: le titaniti. Riv. Mineral. Ital., 25, 2 (2-2001), 71-84.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
'Anatase'4.DD.05TiO2
'Brookite'4.DD.10TiO2
'Hematite'4.CB.05Fe2O3
var: Iron Rose4.CB.05Fe2O3
Quartz4.DA.05SiO2
var: Smoky Quartz4.DA.05SiO2
Rutile4.DB.05TiO2
Group 5 - Nitrates and Carbonates
'Ankerite'5.AB.10Ca(Fe2+,Mg)(CO3)2
'Hydrozincite'5.BA.15Zn5(CO3)2(OH)6
Siderite5.AB.05FeCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
'Anhydrite'7.AD.30CaSO4
'Gypsum'7.CD.40CaSO4 · 2H2O
Group 9 - Silicates
'Actinolite'9.DE.10☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
'Albite'9.FA.35Na(AlSi3O8)
var: Pericline9.FA.35Na(AlSi3O8)
'Clinochlore'9.EC.55Mg5Al(AlSi3O10)(OH)8
'Dravite'9.CK.05Na(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Kaolinite9.ED.05Al2(Si2O5)(OH)4
Kyanite9.AF.15Al2(SiO4)O
Microcline9.FA.30K(AlSi3O8)
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
Phlogopite9.EC.20KMg3(AlSi3O10)(OH)2
Prehnite9.DP.20Ca2Al2Si3O10(OH)2
Scolecite9.GA.05CaAl2Si3O10 · 3H2O
Staurolite9.AF.30Fe2+2Al9Si4O23(OH)
Titanite9.AG.15CaTi(SiO4)O
Unclassified Minerals, Rocks, etc.
'Apatite'-
'Garnet Group'-X3Z2(SiO4)3
'Hornblende'-
K Feldspar-
'var: Adularia'-KAlSi3O8

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
AX2
Anatase4.4.4.1TiO2
Brookite4.4.5.1TiO2
Rutile4.4.1.1TiO2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Siderite14.1.1.3FeCO3
AB(XO3)2
Ankerite14.2.1.2Ca(Fe2+,Mg)(CO3)2
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Hydrozincite16a.4.1.1Zn5(CO3)2(OH)6
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Anhydrite28.3.2.1CaSO4
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Gypsum29.6.3.1CaSO4 · 2H2O
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
Staurolite52.2.3.1Fe2+2Al9Si4O23(OH)
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Titanite52.4.3.1CaTi(SiO4)O
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 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Phlogopite71.2.2b.1KMg3(AlSi3O10)(OH)2
Sheets of 6-membered rings interlayered 1:1, 2:1, and octahedra
Clinochlore71.4.1.4Mg5Al(AlSi3O10)(OH)8
Group 72 - PHYLLOSILICATES Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings with 4-membered rings
Prehnite72.1.3.1Ca2Al2Si3O10(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)
Microcline76.1.1.5K(AlSi3O8)
Group 77 - TECTOSILICATES Zeolites
Zeolite group - True zeolites
Scolecite77.1.5.5CaAl2Si3O10 · 3H2O
Unclassified Minerals, Rocks, etc.
Actinolite-☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Albite
var: Pericline
-Na(AlSi3O8)
'Apatite'-
'Garnet Group'-X3Z2(SiO4)3
Hematite
var: Iron Rose
-Fe2O3
'Hornblende'-
'K Feldspar'-
'var: Adularia'-KAlSi3O8
Kaolinite-Al2(Si2O5)(OH)4
Quartz
var: Smoky Quartz
-SiO2

List of minerals for each chemical element

HHydrogen
H Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
H ClinochloreMg5Al(AlSi3O10)(OH)8
H DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
H GypsumCaSO4 · 2H2O
H HydrozinciteZn5(CO3)2(OH)6
H KaoliniteAl2(Si2O5)(OH)4
H MuscoviteKAl2(AlSi3O10)(OH)2
H PhlogopiteKMg3(AlSi3O10)(OH)2
H PrehniteCa2Al2Si3O10(OH)2
H ScoleciteCaAl2Si3O10 · 3H2O
H StauroliteFe22+Al9Si4O23(OH)
BBoron
B DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
CCarbon
C AnkeriteCa(Fe2+,Mg)(CO3)2
C HydrozinciteZn5(CO3)2(OH)6
C SideriteFeCO3
OOxygen
O Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
O K Feldspar (var: Adularia)KAlSi3O8
O AlbiteNa(AlSi3O8)
O AnataseTiO2
O AnhydriteCaSO4
O AnkeriteCa(Fe2+,Mg)(CO3)2
O BrookiteTiO2
O ClinochloreMg5Al(AlSi3O10)(OH)8
O DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
O Garnet GroupX3Z2(SiO4)3
O GypsumCaSO4 · 2H2O
O HematiteFe2O3
O HydrozinciteZn5(CO3)2(OH)6
O Hematite (var: Iron Rose)Fe2O3
O KaoliniteAl2(Si2O5)(OH)4
O KyaniteAl2(SiO4)O
O MicroclineK(AlSi3O8)
O MuscoviteKAl2(AlSi3O10)(OH)2
O Albite (var: Pericline)Na(AlSi3O8)
O PhlogopiteKMg3(AlSi3O10)(OH)2
O PrehniteCa2Al2Si3O10(OH)2
O QuartzSiO2
O RutileTiO2
O ScoleciteCaAl2Si3O10 · 3H2O
O SideriteFeCO3
O Quartz (var: Smoky Quartz)SiO2
O StauroliteFe22+Al9Si4O23(OH)
O TitaniteCaTi(SiO4)O
NaSodium
Na AlbiteNa(AlSi3O8)
Na DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Na Albite (var: Pericline)Na(AlSi3O8)
MgMagnesium
Mg Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Mg AnkeriteCa(Fe2+,Mg)(CO3)2
Mg ClinochloreMg5Al(AlSi3O10)(OH)8
Mg DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Mg PhlogopiteKMg3(AlSi3O10)(OH)2
AlAluminium
Al K Feldspar (var: Adularia)KAlSi3O8
Al AlbiteNa(AlSi3O8)
Al ClinochloreMg5Al(AlSi3O10)(OH)8
Al DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Al KaoliniteAl2(Si2O5)(OH)4
Al KyaniteAl2(SiO4)O
Al MicroclineK(AlSi3O8)
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al Albite (var: Pericline)Na(AlSi3O8)
Al PhlogopiteKMg3(AlSi3O10)(OH)2
Al PrehniteCa2Al2Si3O10(OH)2
Al ScoleciteCaAl2Si3O10 · 3H2O
Al StauroliteFe22+Al9Si4O23(OH)
SiSilicon
Si Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Si K Feldspar (var: Adularia)KAlSi3O8
Si AlbiteNa(AlSi3O8)
Si ClinochloreMg5Al(AlSi3O10)(OH)8
Si DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Si Garnet GroupX3Z2(SiO4)3
Si KaoliniteAl2(Si2O5)(OH)4
Si KyaniteAl2(SiO4)O
Si MicroclineK(AlSi3O8)
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si Albite (var: Pericline)Na(AlSi3O8)
Si PhlogopiteKMg3(AlSi3O10)(OH)2
Si PrehniteCa2Al2Si3O10(OH)2
Si QuartzSiO2
Si ScoleciteCaAl2Si3O10 · 3H2O
Si Quartz (var: Smoky Quartz)SiO2
Si StauroliteFe22+Al9Si4O23(OH)
Si TitaniteCaTi(SiO4)O
SSulfur
S AnhydriteCaSO4
S GypsumCaSO4 · 2H2O
S PyriteFeS2
KPotassium
K K Feldspar (var: Adularia)KAlSi3O8
K MicroclineK(AlSi3O8)
K MuscoviteKAl2(AlSi3O10)(OH)2
K PhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
Ca Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Ca AnhydriteCaSO4
Ca AnkeriteCa(Fe2+,Mg)(CO3)2
Ca GypsumCaSO4 · 2H2O
Ca PrehniteCa2Al2Si3O10(OH)2
Ca ScoleciteCaAl2Si3O10 · 3H2O
Ca TitaniteCaTi(SiO4)O
TiTitanium
Ti AnataseTiO2
Ti BrookiteTiO2
Ti RutileTiO2
Ti TitaniteCaTi(SiO4)O
FeIron
Fe Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Fe AnkeriteCa(Fe2+,Mg)(CO3)2
Fe HematiteFe2O3
Fe Hematite (var: Iron Rose)Fe2O3
Fe PyriteFeS2
Fe SideriteFeCO3
Fe StauroliteFe22+Al9Si4O23(OH)
ZnZinc
Zn HydrozinciteZn5(CO3)2(OH)6

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
- Scaini G. (1960): La cianite in Val Formazza. Natura, 51, 1, 25.
- Del Caldo A., Moro C., Gramaccioli C.M., Boscardin M. (1973): Guida ai minerali. Fratelli Fabbri Editori, Milano, 208 pp.
- Mattioli V. (1979): Minerali Ossolani. Ed. Arti Grafiche Medesi, Milano, 268 pp.
- Albertini C., Milanesi D. (2001): Valli Antigorio e Formazza: le titaniti. Riv. Mineral. Ital., 25, 2 (2-2001), 71-84.
- 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, 607 pp.

Localities in this Region
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