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Stavalina, Grosina Valley, Grosio, Sondrio Province, Lombardy, Italyi
Regional Level Types
Stavalina- not defined -
Grosina ValleyValley
GrosioMunicipality
Sondrio ProvinceProvince
LombardyRegion
ItalyCountry

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Latitude & Longitude (WGS84):
46° North , 10° East (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~12km
GRN:
N31E06
Köppen climate type:
ET : Tundra
Mindat Locality ID:
30224
Long-form identifier:
mindat:1:2:30224:8
GUID (UUID V4):
0
Name(s) in local language(s):
Stavalina, Valle Grosina, Grosio, Valtellina, Sondrio, Lombardia, Italia


Feldspar-quartz pegmatite dykes embedded in biotite gneiss cropping out along the road, to the north of Stavalina, at an elevation of about 1400 m. Accessory minerals include apatite (fluorescing salmon-pink), opal (fluorescing green), garnet, muscovite, and tourmaline (Tabacchi, 1972)

Other dykes, consisting of almost pure feldspar and quartz (and for this reason worthy of industrial exploitation), crop out above Stavalina, between Stavello and Piatta di Sotto. The main dyke is almost 2 km long and up to 100 m thick. These pegmatites are very poor in accessory minerals (apatite, garnet, tourmaline, iron oxides and hydroxides).

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


3 valid minerals.

Detailed Mineral List:

ⓘ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
ⓘ 'Feldspar Group'
ⓘ 'Garnet Group'
Formula: X3Z2(SiO4)3
ⓘ 'Limonite'
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Opal
Formula: SiO2 · nH2O
ⓘ Opal var. Opal-AN
Formula: SiO2 · nH2O
ⓘ Quartz
Formula: SiO2
ⓘ 'Tourmaline'
Formula: AD3G6 (T6O18)(BO3)3X3Z

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
ⓘOpal
var. Opal-AN		4.DA.10SiO2 · nH2O
ⓘ4.DA.10SiO2 · nH2O
Group 9 - Silicates
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified
ⓘ'Feldspar Group'-
ⓘ'Limonite'-
ⓘ'Tourmaline'-AD3G6 (T6O18)(BO3)3X3Z
ⓘ'Garnet Group'-X3Z2(SiO4)3
ⓘ'Apatite'-Ca5(PO4)3(Cl/F/OH)

List of minerals for each chemical element

HHydrogen
Hⓘ Opal var. Opal-ANSiO2 · nH2O
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ OpalSiO2 · nH2O
Hⓘ ApatiteCa5(PO4)3(Cl/F/OH)
BBoron
Bⓘ TourmalineAD3G6 (T6O18)(BO3)3X3Z
OOxygen
Oⓘ Opal var. Opal-ANSiO2 · nH2O
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ OpalSiO2 · nH2O
Oⓘ QuartzSiO2
Oⓘ TourmalineAD3G6 (T6O18)(BO3)3X3Z
Oⓘ Garnet GroupX3Z2(SiO4)3
Oⓘ ApatiteCa5(PO4)3(Cl/F/OH)
FFluorine
Fⓘ ApatiteCa5(PO4)3(Cl/F/OH)
AlAluminium
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Siⓘ Opal var. Opal-ANSiO2 · nH2O
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ OpalSiO2 · nH2O
Siⓘ QuartzSiO2
Siⓘ Garnet GroupX3Z2(SiO4)3
PPhosphorus
Pⓘ ApatiteCa5(PO4)3(Cl/F/OH)
ClChlorine
Clⓘ ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Caⓘ ApatiteCa5(PO4)3(Cl/F/OH)

Other Regions, Features and Areas containing this locality

Eurasian PlateTectonic Plate
  • AlpsAccretionary Complex
EuropeContinent
Italy

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

Tabacchi, C. (1972): Pegmatiti di Val Grosina (Grosio, Sondrio). Not. Gr. Mineral. Lomb., 5, 4, 85-86.
Bedognè, F., Montrasio, A., Sciesa, E. (2006) I minerali della media-alta Valtellina, delle Orobie valtellinesi e della Val Poschiavo. Aggiornamenti sulle altre località della provincia di Sondrio. Bettini, Sondrio, 255 pp.
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