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Laghetto pegmatitic dyke (Laghetto Quarry), Piona Peninsula, Colico, Lecco Province, Lombardy, Italyi
Regional Level Types
Laghetto pegmatitic dyke (Laghetto Quarry)Dike
Piona PeninsulaPeninsula
ColicoCommune
Lecco ProvinceProvince
LombardyRegion
Italy- not defined -

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Latitude & Longitude (WGS84):
46° 7' 6'' North , 9° 19' 34'' East
Latitude & Longitude (decimal):
46.11836,9.32630
GeoHash:
G#: u0nwk5x4y
GRN:
N31E05
Type:
Dike
KΓΆppen climate type:
Dfc : Subarctic climate
Nearest Settlements:
PlacePopulationDistance
Olgiasca241 (2014)0.9km
Dorio323 (2017)2.1km
Sueglio167 (2014)3.7km
Dongo3,489 (2014)3.7km
Gravedona-San Gregorio3,697 (2014)3.7km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Club Cercatori di Minerali e Fossili TicinoViganello, Ticino30km
Mindat Locality ID:
29937
Long-form identifier:
mindat:1:2:29937:9
GUID (UUID V4):
317b4b90-68fb-4f44-8b7b-38d3329f583e
Name(s) in local language(s):
Filone pegmatitico del Laghetto (Cava del Laghetto), Penisola di Piona, Colico, Provincia di Lecco, Lombardia, Italia


Abandoned feldspar quarry, which was actively exploited in the early years of the 1900s and definitely ceased in 1952, opened in a sub-vertical pegmatite dyke located on the eastern side of Piona Peninsula.

Cartography: IGM F. 17 II S.O.

Altitude: 219 metres a.s.l.

The entrance to the underground works is blocked by a landslide and the main gallery is flooded. Minerals are found in the quarry dumps.

This locality is famous for the large crysoberyl crystals (often twinned), which occur with minerals of the primary paragenetic association (almandine, schorl, zircon, uraninite, and rare beryl). An interesting secondary hydrothermal association, consisting of phenakite, bertrandite, secondary beryl, and fluorapatite, has been recently described (Vignola et al., 2015).

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


18 valid minerals. 1 erroneous literature entry.

Detailed Mineral List:

β“˜ Albite
Formula: Na(AlSi3O8)
β“˜ Almandine
Formula: Fe2+3Al2(SiO4)3
β“˜ Autunite
Formula: Ca(UO2)2(PO4)2 · 10-12H2O
β“˜ Bertrandite
Formula: Be4(Si2O7)(OH)2
β“˜ Beryl
Formula: Be3Al2(Si6O18)
β“˜ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
β“˜ Chrysoberyl
Formula: BeAl2O4
β“˜ Fluorapatite
Formula: Ca5(PO4)3F
β“˜ Metatorbernite
Formula: Cu(UO2)2(PO4)2 · 8H2O
β“˜ Microcline
Formula: K(AlSi3O8)
β“˜ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
β“˜ Orthoclase
Formula: K(AlSi3O8)
Description: = microcline
β“˜ Phenakite
Formula: Be2SiO4
β“˜ Pyrite
Formula: FeS2
β“˜ Pyrrhotite
Formula: Fe1-xS
β“˜ Quartz
Formula: SiO2
β“˜ Schorl
Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
β“˜ Torbernite
Formula: Cu(UO2)2(PO4)2 · 12H2O
β“˜ Uraninite
Formula: UO2
β“˜ Zircon
Formula: Zr(SiO4)

Gallery:

Fe2+3Al2(SiO4)3β“˜ Almandine
Be4(Si2O7)(OH)2β“˜ Bertrandite
BeAl2O4β“˜ Chrysoberyl
Ca5(PO4)3Fβ“˜ Fluorapatite
KAl2(AlSi3O10)(OH)2β“˜ Muscovite
Zr(SiO4)β“˜ Zircon

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
β“˜Pyrrhotite2.CC.10Fe1-xS
β“˜Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
β“˜Chrysoberyl4.BA.05BeAl2O4
β“˜Quartz4.DA.05SiO2
β“˜Uraninite4.DL.05UO2
Group 8 - Phosphates, Arsenates and Vanadates
β“˜Fluorapatite8.BN.05Ca5(PO4)3F
β“˜Torbernite8.EB.05Cu(UO2)2(PO4)2 Β· 12H2O
β“˜Autunite8.EB.05Ca(UO2)2(PO4)2 Β· 10-12H2O
β“˜Metatorbernite8.EB.10Cu(UO2)2(PO4)2 Β· 8H2O
Group 9 - Silicates
β“˜Phenakite9.AA.05Be2SiO4
β“˜Almandine9.AD.25Fe2+3Al2(SiO4)3
β“˜Zircon9.AD.30Zr(SiO4)
β“˜Bertrandite9.BD.05Be4(Si2O7)(OH)2
β“˜Beryl9.CJ.05Be3Al2(Si6O18)
β“˜Schorl9.CK.05NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
β“˜Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
β“˜Orthoclase ?9.FA.30K(AlSi3O8)
β“˜Microcline9.FA.30K(AlSi3O8)
β“˜Albite9.FA.35Na(AlSi3O8)
Unclassified
β“˜'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2

List of minerals for each chemical element

HHydrogen
Hβ“˜ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Hβ“˜ BertranditeBe4(Si2O7)(OH)2
Hβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hβ“˜ MetatorberniteCu(UO2)2(PO4)2 · 8H2O
Hβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Hβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Hβ“˜ TorberniteCu(UO2)2(PO4)2 · 12H2O
BeBeryllium
Beβ“˜ BertranditeBe4(Si2O7)(OH)2
Beβ“˜ BerylBe3Al2(Si6O18)
Beβ“˜ ChrysoberylBeAl2O4
Beβ“˜ PhenakiteBe2SiO4
BBoron
Bβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
OOxygen
Oβ“˜ AlbiteNa(AlSi3O8)
Oβ“˜ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Oβ“˜ AlmandineFe32+Al2(SiO4)3
Oβ“˜ BertranditeBe4(Si2O7)(OH)2
Oβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oβ“˜ BerylBe3Al2(Si6O18)
Oβ“˜ ChrysoberylBeAl2O4
Oβ“˜ FluorapatiteCa5(PO4)3F
Oβ“˜ MetatorberniteCu(UO2)2(PO4)2 · 8H2O
Oβ“˜ MicroclineK(AlSi3O8)
Oβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Oβ“˜ OrthoclaseK(AlSi3O8)
Oβ“˜ PhenakiteBe2SiO4
Oβ“˜ QuartzSiO2
Oβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Oβ“˜ TorberniteCu(UO2)2(PO4)2 · 12H2O
Oβ“˜ UraniniteUO2
Oβ“˜ ZirconZr(SiO4)
FFluorine
Fβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fβ“˜ FluorapatiteCa5(PO4)3F
NaSodium
Naβ“˜ AlbiteNa(AlSi3O8)
Naβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
MgMagnesium
Mgβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
AlAluminium
Alβ“˜ AlbiteNa(AlSi3O8)
Alβ“˜ AlmandineFe32+Al2(SiO4)3
Alβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alβ“˜ BerylBe3Al2(Si6O18)
Alβ“˜ ChrysoberylBeAl2O4
Alβ“˜ MicroclineK(AlSi3O8)
Alβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Alβ“˜ OrthoclaseK(AlSi3O8)
Alβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
SiSilicon
Siβ“˜ AlbiteNa(AlSi3O8)
Siβ“˜ AlmandineFe32+Al2(SiO4)3
Siβ“˜ BertranditeBe4(Si2O7)(OH)2
Siβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siβ“˜ BerylBe3Al2(Si6O18)
Siβ“˜ MicroclineK(AlSi3O8)
Siβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Siβ“˜ OrthoclaseK(AlSi3O8)
Siβ“˜ PhenakiteBe2SiO4
Siβ“˜ QuartzSiO2
Siβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Siβ“˜ ZirconZr(SiO4)
PPhosphorus
Pβ“˜ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Pβ“˜ FluorapatiteCa5(PO4)3F
Pβ“˜ MetatorberniteCu(UO2)2(PO4)2 · 8H2O
Pβ“˜ TorberniteCu(UO2)2(PO4)2 · 12H2O
SSulfur
Sβ“˜ PyriteFeS2
Sβ“˜ PyrrhotiteFe1-xS
KPotassium
Kβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kβ“˜ MicroclineK(AlSi3O8)
Kβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Kβ“˜ OrthoclaseK(AlSi3O8)
CaCalcium
Caβ“˜ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Caβ“˜ FluorapatiteCa5(PO4)3F
TiTitanium
Tiβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
FeIron
Feβ“˜ AlmandineFe32+Al2(SiO4)3
Feβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feβ“˜ PyriteFeS2
Feβ“˜ PyrrhotiteFe1-xS
Feβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
CuCopper
Cuβ“˜ MetatorberniteCu(UO2)2(PO4)2 · 8H2O
Cuβ“˜ TorberniteCu(UO2)2(PO4)2 · 12H2O
ZrZirconium
Zrβ“˜ ZirconZr(SiO4)
UUranium
Uβ“˜ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Uβ“˜ MetatorberniteCu(UO2)2(PO4)2 · 8H2O
Uβ“˜ TorberniteCu(UO2)2(PO4)2 · 12H2O
Uβ“˜ UraniniteUO2

Other Regions, Features and Areas containing this locality

Eurasian PlateTectonic Plate
EuropeContinent

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Repossi E. (1904): Appunti mineralogici sulla Pegmatite di Olgiasca (Lago di Como). Atti R. Acc. Naz. Lincei, Rend. classe sc. fis. mat. nat., serie 5, 13, 86-90.
Repossi E. (1907): Il crisoberillo nella pegmatite di Olgiasca (Lago di Como). Atti Congresso Naturalisti Italiani, Milano 1906, 246-248.
Repossi E. (1913): I filoni pegmatitici di Olgiasca. Rinvenimento in essi di minerali di uranio. Atti Soc. Ital. Sc. Nat., 52, 4, 487-513.
Colasso T. (1937): I minerali dei filoni pegmatitici di Olgiasca. Atti Soc. Ital. Sc. Nat., 76, 4, 403-418.
Magistretti L. (1940): Berillo nel filone pegmatitico del laghetto di Piona. Natura, 31, 2, 70-72.
Scaini G. (1972): Filone del Laghetto. In: Boscardin M., de Michele V., Scaini G. (eds.), Itinerari mineralogici della Lombardia. Museo Civico di Storia Naturale e SocietΓ  Italiana di Scienze Naturali, Milano, 47-50.
Del Caldo A., Moro C., Gramaccioli C.M., Boscardin M. (1973): Guida ai Minerali. Fratelli Fabbri Ed., Milano, 208 pp.
De Michele V. (1974): Guida mineralogica d'Italia. Istituto Geografico De Agostini, Novara, 2 vol., 408 pp.
Gramaccioli C.M. (1975): Minerali alpini e prealpini. Istituto Italiano Edizioni Atlas, Bergamo, 2 vol., 472 pp.
Rivista Mineraogica Italiana, (1975) n. 3 pg. 60 - (1976) n. 3 pg 55 - (1979) n. 3 pg. 76 - (1983) n. 1 pg. 29 - (1984) n. 3 pg. 94 - (1985) n. 2 pg. 86 e 87 - (1987) n. 1 pg. 64 - (1991) n. 1 pg. 63 - (1993) n. 4 pg. 211.
Taravella G. (1994): Le pegmatiti in Lombardia. Ed. privata, Milano, pages 20-23.
Vignola P., Gentile P., Rotiroti N. (2015): Fenacite e bertrandite della cava del Laghetto, Colico (LC). Riv. Mineral. Ital., 39, 2, 116-121.
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