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Leggia Valley, Leggia, Grono, Moesa Region, Grisons, Switzerlandi
Regional Level Types
Leggia ValleyValley
LeggiaVillage
GronoMunicipality
Moesa RegionRegion
GrisonsCanton
SwitzerlandCountry

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Type:
Mindat Locality ID:
302433
Long-form identifier:
mindat:1:2:302433:4
GUID (UUID V4):
0
Other Languages:
Italian:
Val Leggia, Leggia, Grono, Regione Moesa, Grigioni, Svizzera
Lombard:
Val Lègia, Lègia, Gron, Region Moesa, Canton Grisun, Svizera


LCT and NYF pegmatites that are part of the so-called Bodengo pegmatite area, a large region including the upper portions of a series of valleys (Leggia andCama valleys, Moesa, Grisons, Switzerland;Bodengo,Soè andGarzelli valleys, Sondrio Province, Lombardy, Italy;Dosso andDarengo valleys, Como Province, Lombardy, Italy) located between the Mesolcina (west) and Mera (east) valleys, Southern Steep Belt of the Central Alps.

The two main LCT pegmatite bodies in Leggia Valley are known asPizzo Paglia pegmatite dyke (2385 m a.s.l.; VLGa in Guastoni et al., 2014) andColonello pegmatite dyke (2160 m a.s.l.; VLGb in Guastoni et al., 2014). They are characterised respectively by the following mineral assemblage: K feldspar, albite, quartz, muscovite, biotite, beryl, schorl, almandine-spessartine garnets (coreAlm58Sps41Pyr1 to rimAlm73Sps23Pyr3), zircon, K feldspar, albite, albite var. cleavelandite, quartz, muscovite, beryl, schorl, almandine-spessartine garnets, wodginite, zircon.

A NYF pegmatite body outcrops at an intermadiate elevation between the previous ones (VLGm in Guastoni et al., 2014). It is characterised by the presence of K feldspar, albite, quartz, aeschynite-(Y), biotite, columbite-(Fe), euxenite-(Y), monazite-(Ce), spessartine-almandine garnets (coreSps65Alm29Pyr4 to rimSps51Alm40Py5), zircon.

Select Mineral List Type

StandardDetailedGalleryStrunzChemical Elements

Mineral List

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

13 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

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

Select Rock List Type

Alphabetical ListTree Diagram

Detailed Mineral List:

Aeschynite-(Ce)
Formula:Ce(TiNb)O6
Albite
Formula:Na(AlSi3O8)
Albite var. Cleavelandite
Formula:Na(AlSi3O8)
Almandine
Formula:Fe2+3Al2(SiO4)3
Description: Core Alm58Sps41Pyr1 to rim Alm73Sps23Pyr3.
'Almandine-Spessartine Series'
Beryl
Formula:Be3Al2(Si6O18)
'Biotite'
Formula:K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Columbite-(Fe)
Formula:Fe2+Nb2O6
Euxenite-(Y)
Formula:(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
'Garnet Group'
Formula:X3Z2(SiO4)3
'K Feldspar'
Monazite-(Ce)
Formula:Ce(PO4)
Description: As yellow-orange euhedral crystals
Muscovite
Formula:KAl2(AlSi3O10)(OH)2
Quartz
Formula:SiO2
Quartz var. Smoky Quartz
Formula:SiO2
Schorl
Formula:NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
Spessartine
Formula:Mn2+3Al2(SiO4)3
Description: Core Sps65Alm29Pyr4 to rim Sps51Alm40Py5.
Wodginite
Formula:Mn2+Sn4+Ta2O8
Zircon
Formula:Zr(SiO4)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
var. Smoky Quartz4.DA.05SiO2
Columbite-(Fe)4.DB.35Fe2+Nb2O6
Wodginite4.DB.40Mn2+Sn4+Ta2O8
Aeschynite-(Ce)4.DF.05Ce(TiNb)O6
Euxenite-(Y)4.DG.05(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Group 8 - Phosphates, Arsenates and Vanadates
Monazite-(Ce)8.AD.50Ce(PO4)
Group 9 - Silicates
Almandine9.AD.25Fe2+3Al2(SiO4)3
Spessartine9.AD.25Mn2+3Al2(SiO4)3
Zircon9.AD.30Zr(SiO4)
Beryl9.CJ.05Be3Al2(Si6O18)
Schorl9.CK.05NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
Albite9.FA.35Na(AlSi3O8)
var. Cleavelandite9.FA.35Na(AlSi3O8)
Unclassified
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
'Almandine-Spessartine Series'-
'K Feldspar'-
'Garnet Group'-X3Z2(SiO4)3

List of minerals for each chemical element

HHydrogen
HBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
HMuscoviteKAl2(AlSi3O10)(OH)2
HSchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
BeBeryllium
BeBerylBe3Al2(Si6O18)
BBoron
BSchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
OOxygen
OAeschynite-(Ce)Ce(TiNb)O6
OAlbiteNa(AlSi3O8)
OAlmandineFe32+Al2(SiO4)3
OBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
OBerylBe3Al2(Si6O18)
OEuxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
OColumbite-(Fe)Fe2+Nb2O6
OMonazite-(Ce)Ce(PO4)
OMuscoviteKAl2(AlSi3O10)(OH)2
OQuartzSiO2
OSchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
OQuartz var.Smoky QuartzSiO2
OSpessartineMn32+Al2(SiO4)3
OWodginiteMn2+Sn4+Ta2O8
OZirconZr(SiO4)
OAlbite var.CleavelanditeNa(AlSi3O8)
OAlmandine-Spessartine Series
OGarnet GroupX3Z2(SiO4)3
FFluorine
FBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
NaSodium
NaAlbiteNa(AlSi3O8)
NaSchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
NaAlbite var.CleavelanditeNa(AlSi3O8)
MgMagnesium
MgBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
AlAluminium
AlAlbiteNa(AlSi3O8)
AlAlmandineFe32+Al2(SiO4)3
AlBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
AlBerylBe3Al2(Si6O18)
AlMuscoviteKAl2(AlSi3O10)(OH)2
AlSchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
AlSpessartineMn32+Al2(SiO4)3
AlAlbite var.CleavelanditeNa(AlSi3O8)
AlAlmandine-Spessartine Series
SiSilicon
SiAlbiteNa(AlSi3O8)
SiAlmandineFe32+Al2(SiO4)3
SiBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
SiBerylBe3Al2(Si6O18)
SiMuscoviteKAl2(AlSi3O10)(OH)2
SiQuartzSiO2
SiSchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
SiQuartz var.Smoky QuartzSiO2
SiSpessartineMn32+Al2(SiO4)3
SiZirconZr(SiO4)
SiAlbite var.CleavelanditeNa(AlSi3O8)
SiAlmandine-Spessartine Series
SiGarnet GroupX3Z2(SiO4)3
PPhosphorus
PMonazite-(Ce)Ce(PO4)
KPotassium
KBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
KMuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
CaEuxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
TiTitanium
TiAeschynite-(Ce)Ce(TiNb)O6
TiBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
TiEuxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
MnManganese
MnSpessartineMn32+Al2(SiO4)3
MnWodginiteMn2+Sn4+Ta2O8
MnAlmandine-Spessartine Series
FeIron
FeAlmandineFe32+Al2(SiO4)3
FeBiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
FeColumbite-(Fe)Fe2+Nb2O6
FeSchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
FeAlmandine-Spessartine Series
YYttrium
YEuxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
ZrZirconium
ZrZirconZr(SiO4)
NbNiobium
NbAeschynite-(Ce)Ce(TiNb)O6
NbEuxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
NbColumbite-(Fe)Fe2+Nb2O6
SnTin
SnWodginiteMn2+Sn4+Ta2O8
CeCerium
CeAeschynite-(Ce)Ce(TiNb)O6
CeEuxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
CeMonazite-(Ce)Ce(PO4)
TaTantalum
TaEuxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
TaWodginiteMn2+Sn4+Ta2O8
ThThorium
ThEuxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
UUranium
UEuxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6

Fossils

This region is too big or complex to display the fossil list, try looking at smaller subregions.

Localities in this Region

Other Regions, Features and Areas that Intersect

Eurasian PlateTectonic Plate
  • AlpsAccretionary Complex
Europe
Switzerland

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