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Sommafiume pegmatitic dyke (Alpe Sommafiume; Marategno Mine), Dorio, Lecco Province, Lombardy, Italyi
Regional Level Types
Sommafiume pegmatitic dyke (Alpe Sommafiume; Marategno Mine)Dike
Dorio- not defined -
Lecco ProvinceProvince
LombardyRegion
ItalyCountry

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Sommafiume abandoned quarry, landfill outside

Sommafiume pegmatitic dyke, Dorio, Lecco Province, Lombardy, Italy
Entrance to the abandoned quarry of Sommafiume

Sommafiume pegmatitic dyke, Dorio, Lecco Province, Lombardy, Italy
Name(s) in local language(s):Filone pegmatitico di Sommafiume (Alpe Sommafiume; Miniera Marategno), Dervio, Provincia di Lecco, Lombardia, Italia
Latitude & Longitude (WGS84): 46° 6' 20'' North , 9° 21' 38'' East
Latitude & Longitude (decimal): 46.10583,9.36056
GeoHash:G#: u0nwm121u
Locality type:Dike
Köppen climate type:Dfc : Subarctic climate
Nearest Settlements:
PlacePopulationDistance
Sueglio167 (2014)3.0km
Introzzo137 (2014)3.1km
Colico Piano7,204 (2014)3.2km
Dorio323 (2017)3.3km
Tremenico176 (2014)3.4km


Abandoned pegmatite quarry (since more than 60 years), also known as Marategno Mine. The mine gallery is located at 982 m a.s.l.

Sommafiume dyke is one of the big 10 dykes of the Piona pegmatite swarm, which is embedded into the high-grade metapelites (sillimanite-, garnet-bearing gneiss) of the Dervio-Olgiasca Zone (DOZ). The DOZ, which belongs to the crystalline basement of the Central Southern Alps, represents a segment of upper to middle continental crust, originated after Variscan intermediate pressure amphibolite facies metamorphism and exumated during the Alpine orogenesis (di Paola & Spalla, 2000). The Sommafiume pegmatite shows features and paragenesis similar to the ones observed at Olgiasca-Malpensata.

Cartography: IGM F 17 II N E

To get to the mine, take the road from Dervio to Sueglio, then for Sommafiume, then the path slightly leading down to a wide hairpin turn where you find the mine.

Regions containing this locality

Eurasian PlateTectonic Plate
EuropeContinent
The Alps, EuropeMountain Range

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


19 valid minerals.

Detailed Mineral List:

Almandine
Formula: Fe2+3Al2(SiO4)3
'Apatite'
Autunite
Formula: Ca(UO2)2(PO4)2 · 11H2O
Beryl
Formula: Be3Al2(Si6O18)
'Biotite'
'Chlorite Group'
'Columbite-(Fe)-Columbite-(Mn) Series'
Dravite
Formula: Na(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
'Feldspar Group'
'Garnet Group'
Formula: X3Z2(SiO4)3
Goethite
Formula: α-Fe3+O(OH)
Graftonite
Formula: Fe2+Fe2+2(PO4)2
'Limonite'
Formula: (Fe,O,OH,H2O)
Metatorbernite
Formula: Cu(UO2)2(PO4)2 · 8H2O
'Monazite'
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Orthoclase
Formula: K(AlSi3O8)
Pyrite
Formula: FeS2
Pyrrhotite
Formula: Fe7S8
Quartz
Formula: SiO2
Schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Spessartine
Formula: Mn2+3Al2(SiO4)3
Torbernite
Formula: Cu(UO2)2(PO4)2 · 12H2O
'Tourmaline'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Triphylite
Formula: LiFe2+PO4
Uraninite
Formula: UO2
Vivianite
Formula: Fe2+3(PO4)2 · 8H2O
Zircon
Formula: Zr(SiO4)

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Pyrite2.EB.05aFeS2
Pyrrhotite2.CC.10Fe7S8
Group 4 - Oxides and Hydroxides
Goethite4.00.α-Fe3+O(OH)
Quartz4.DA.05SiO2
Uraninite4.DL.05UO2
Group 8 - Phosphates, Arsenates and Vanadates
Autunite8.EB.05Ca(UO2)2(PO4)2 · 11H2O
Graftonite8.AB.20Fe2+Fe2+2(PO4)2
Metatorbernite8.EB.10Cu(UO2)2(PO4)2 · 8H2O
Torbernite8.EB.05Cu(UO2)2(PO4)2 · 12H2O
Triphylite8.AB.10LiFe2+PO4
Vivianite8.CE.40Fe2+3(PO4)2 · 8H2O
Group 9 - Silicates
Almandine9.AD.25Fe2+3Al2(SiO4)3
Beryl9.CJ.05Be3Al2(Si6O18)
Dravite9.CK.05Na(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
Orthoclase9.FA.30K(AlSi3O8)
Schorl9.CK.05Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Spessartine9.AD.25Mn2+3Al2(SiO4)3
Zircon9.AD.30Zr(SiO4)
Unclassified Minerals, Rocks, etc.
'Apatite'-
'Biotite'-
'Chlorite Group'-
'Columbite-(Fe)-Columbite-(Mn) Series'-
'Feldspar Group'-
'Garnet Group'-X3Z2(SiO4)3
'Limonite'-(Fe,O,OH,H2O)
'Monazite'-
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmXp, with m:p = 1:1
Pyrrhotite2.8.10.1Fe7S8
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 5 - OXIDES CONTAINING URANIUM OR THORIUM
AXO2·xH2O
Uraninite5.1.1.1UO2
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 38 - ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
ABXO4
Triphylite38.1.1.1LiFe2+PO4
(AB)3(XO4)2
Graftonite38.3.3.1Fe2+Fe2+2(PO4)2
Group 40 - HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
AB2(XO4)2·xH2O, containing (UO2)2+
Autunite40.2a.1.1Ca(UO2)2(PO4)2 · 11H2O
Metatorbernite40.2a.13.2Cu(UO2)2(PO4)2 · 8H2O
Torbernite40.2a.13.1Cu(UO2)2(PO4)2 · 12H2O
A3(XO4)2·xH2O
Vivianite40.3.6.1Fe2+3(PO4)2 · 8H2O
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
Spessartine51.4.3a.3Mn2+3Al2(SiO4)3
Insular SiO4 Groups Only with cations in >[6] coordination
Zircon51.5.2.1Zr(SiO4)
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with [Si6O18] rings; possible (OH) and Al substitution
Beryl61.1.1.1Be3Al2(Si6O18)
Six-Membered Rings with borate groups
Dravite61.3.1.9Na(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Schorl61.3.1.10Na(Fe2+3)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
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
Orthoclase76.1.1.1K(AlSi3O8)
Unclassified Minerals, Mixtures, etc.
'Apatite'-
'Biotite'-
'Chlorite Group'-
'Columbite-(Fe)-Columbite-(Mn) Series'-
'Feldspar Group'-
'Garnet Group'-X3Z2(SiO4)3
'Limonite'-(Fe,O,OH,H2O)
'Monazite'-
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals for each chemical element

HHydrogen
H TorberniteCu(UO2)2(PO4)2 · 12H2O
H AutuniteCa(UO2)2(PO4)2 · 11H2O
H MetatorberniteCu(UO2)2(PO4)2 · 8H2O
H MuscoviteKAl2(AlSi3O10)(OH)2
H SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
H VivianiteFe32+(PO4)2 · 8H2O
H Limonite(Fe,O,OH,H2O)
H DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
H Goethiteα-Fe3+O(OH)
LiLithium
Li TriphyliteLiFe2+PO4
BeBeryllium
Be BerylBe3Al2(Si6O18)
BBoron
B SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
B TourmalineA(D3)G6(T6O18)(BO3)3X3Z
B DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
OOxygen
O ZirconZr(SiO4)
O TorberniteCu(UO2)2(PO4)2 · 12H2O
O AutuniteCa(UO2)2(PO4)2 · 11H2O
O MetatorberniteCu(UO2)2(PO4)2 · 8H2O
O UraniniteUO2
O BerylBe3Al2(Si6O18)
O Garnet GroupX3Z2(SiO4)3
O GraftoniteFe2+Fe22+(PO4)2
O MuscoviteKAl2(AlSi3O10)(OH)2
O QuartzSiO2
O SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
O TourmalineA(D3)G6(T6O18)(BO3)3X3Z
O VivianiteFe32+(PO4)2 · 8H2O
O SpessartineMn32+Al2(SiO4)3
O AlmandineFe32+Al2(SiO4)3
O Limonite(Fe,O,OH,H2O)
O OrthoclaseK(AlSi3O8)
O DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
O TriphyliteLiFe2+PO4
O Goethiteα-Fe3+O(OH)
NaSodium
Na SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Na DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
MgMagnesium
Mg DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
AlAluminium
Al BerylBe3Al2(Si6O18)
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Al SpessartineMn32+Al2(SiO4)3
Al AlmandineFe32+Al2(SiO4)3
Al OrthoclaseK(AlSi3O8)
Al DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
SiSilicon
Si ZirconZr(SiO4)
Si BerylBe3Al2(Si6O18)
Si Garnet GroupX3Z2(SiO4)3
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si QuartzSiO2
Si SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Si SpessartineMn32+Al2(SiO4)3
Si AlmandineFe32+Al2(SiO4)3
Si OrthoclaseK(AlSi3O8)
Si DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
PPhosphorus
P TorberniteCu(UO2)2(PO4)2 · 12H2O
P AutuniteCa(UO2)2(PO4)2 · 11H2O
P MetatorberniteCu(UO2)2(PO4)2 · 8H2O
P GraftoniteFe2+Fe22+(PO4)2
P VivianiteFe32+(PO4)2 · 8H2O
P TriphyliteLiFe2+PO4
SSulfur
S PyriteFeS2
S PyrrhotiteFe7S8
KPotassium
K MuscoviteKAl2(AlSi3O10)(OH)2
K OrthoclaseK(AlSi3O8)
CaCalcium
Ca AutuniteCa(UO2)2(PO4)2 · 11H2O
MnManganese
Mn SpessartineMn32+Al2(SiO4)3
FeIron
Fe GraftoniteFe2+Fe22+(PO4)2
Fe PyriteFeS2
Fe PyrrhotiteFe7S8
Fe SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Fe VivianiteFe32+(PO4)2 · 8H2O
Fe AlmandineFe32+Al2(SiO4)3
Fe Limonite(Fe,O,OH,H2O)
Fe TriphyliteLiFe2+PO4
Fe Goethiteα-Fe3+O(OH)
CuCopper
Cu TorberniteCu(UO2)2(PO4)2 · 12H2O
Cu MetatorberniteCu(UO2)2(PO4)2 · 8H2O
ZrZirconium
Zr ZirconZr(SiO4)
UUranium
U TorberniteCu(UO2)2(PO4)2 · 12H2O
U AutuniteCa(UO2)2(PO4)2 · 11H2O
U MetatorberniteCu(UO2)2(PO4)2 · 8H2O
U UraniniteUO2

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

Paleozoic
251.902 - 541 Ma



ID: 3131490
Palaeozoic granulite

Age: Phanerozoic (251.902 - 541 Ma)

Description: high grade metamorphic

Lithology: Major:{granulite}, Minor{gneiss,greenschist,amphibolite}

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]

Paleozoic
251.902 - 541 Ma



ID: 2347129
Metamorphe Gesteine, meist Metasedimente

Age: Phanerozoic (251.902 - 541 Ma)

Lithology: Gneiss and mica schist

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

Cambrian - Proterozoic
485.4 - 2500 Ma



ID: 3189284
Precambrian-Phanerozoic crystalline metamorphic rocks

Age: to Cambrian (485.4 - 2500 Ma)

Comments: Alps

Lithology: Crystalline metamorphic 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)
- Magistretti L. (1946): Osservazioni sui nuovi filoni pegmatitici individuati alle falde del M. Legnoncino, sopra il laghetto di Piona e in particolare sui minerali della pegmatite presso l'Alpe Sommafiume. Atti Soc. Ital. Sc. Nat., 85, 136-146.
- Fagnani G., Battaini C. (1948): Itinerari mineralogici. Comune di Dervio. Filone di pegmatite di Sommafiume. Natura, 39, 2, 89-93.
- Cantadore F., Gramaccioli C. M. (1969): Osservazioni sulla diffusione di alcuni minerali delle terre rare nelle pegmatiti piemontesi e lombarde. Natura, 60, 2, 96-102.
- Scaini G. (1972): Filone di pegmatite di Sommafiume. Miniera Marategno in località Alpe di Sommafiume. In: Boscardin M., De Michele V., Scaini G. (eds.), Itinerari mineralogici della Lombardia. Museo Civico di Storia Naturale e Società Italiana di Scienze Naturali, Milano, 50-52.
- Del Caldo A., Moro C., Gramaccioli C.M., Boscardin M. (1973): Guida ai Minerali. Fratelli Fabbri Ed., Milano, 208 pp.
- Gramaccioli C.M. (1975): Minerali alpini e prealpini. Istituto Italiano Edizioni Atlas, Bergamo, 2 vol., 472 pp.
- Riv. Min. Ital. 1981 3 pg. 82 / 1984 3 pg. 94 e 1987 4 pg. 222
- Gramaccioli C.M., Scaini G., Gentile P., De Michele V., Mannucci, G. (1992): Natura in Lombardia. I Minerali. Regione Lombardia, Ed., Milano, 223 pp.
- Taravella G. (1994): Le pegmatiti affioranti in Lombardia. Edizione privata, Milano, pages 8-11.
- Di Paola S., Spalla M.I. (2000): Contrasting tectonic records in pre-Alpine metabasites of the Southern Alps (lake Como, Italy). Journal of Geodynamics, 30, 167-189.
- Savoca D., Laureti L. (eds.) (2004): I siti minerari abbandonati e dismessi delle Alpi e Prealpi Lombarde (province di Lecco, Bergamo e Brescia): recupero e valorizzazione. Edizione speciale del Bollettino ufficiale della Regione Lombardia, 29 ottobre 2004. Regione Lombardia, Milano, 142 pp.
- VIGNOLA, P. & DIELLA, V. (2007). Phosphates from Piona granitic pegmatites (Central Southern Alps, Italy). Granitic Pegmatites: the State of the Art. Book of Abstracts (T. Martins & R. Vieira, eds.). Universidade do Porto, Departamento de Geologia, Memórias, 8, 102-103.
- Vignola P., Fransolet A.-M., Guastoni A., Appiani R. (2011): Le pegmatiti di Piona. Recenti studi sui filoni Malpensata, Luna e Sommafiume. Riv. Mineral. Ital., 35, 1, 30-38.


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