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Lago Chiaretto omphacite outcrop, Pian del Re, Crissolo, Cuneo Province, Piedmont, Italyi
Regional Level Types
Lago Chiaretto omphacite outcropOutcrop
Pian del Re- not defined -
CrissoloCommune
Cuneo ProvinceProvince
PiedmontRegion
Italy- not defined -

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Latitude & Longitude (WGS84):
44° 41' 12'' North , 7° 5' 55'' East
Latitude & Longitude (decimal):
44.68692,7.09875
GeoHash:
G#: spvn1x10h
GRN:
N30E04
Type:
Outcrop
Köppen climate type:
Cfb : Temperate oceanic climate
Nearest Settlements:
PlacePopulationDistance
Crissolo210 (2012)4.7km
Maddalena120 (2014)9.1km
Pontechianale208 (2012)9.1km
Calcinere121 (2014)10.8km
Ghisola121 (2014)12.3km
Mindat Locality ID:
341856
Long-form identifier:
mindat:1:2:341856:0
GUID (UUID V4):
b20170ba-2b2a-4b32-8549-594125c33e2a
Other Languages:
Italian:
Affioramento di omfacite del Lago Chiaretto, Pian del Re, Crissolo, Provincia di Cuneo, Piemonte, Italia


Outcrop between Colletto Fiorenza and Lago Chiaretto, where a beautiful chrome-omphacite metagabbro locally includes transposed centimetre- to decimetre-thick dykes of metabasalts. This spectacular outcrop is located at the south end of the NNW-trending ridge of the same rocks, which passes between the lakes Fiorenza and Superiore and terminates to the west of the source of River Po.

The metagabbro shows a well-developed foliation and consists of a whitish matrix, in which emerald-green phenoclasts of chrome-bearing omphacite (locally known as "smaragdite") are preserved. Locally, a layering in the omphacite metagabbro suggests a cumulus structure. The greenish grey to pinkish metabasaltic dykes, now eclogite, are very fine grained and locally preserved remnants of a porphyritic structure. Few boulders preserve igneous-layering textures, with emerald green bands (enriched in chrome-omphacite) corresponding to layers with high-modal clinopyroxene (Rolfo et al., 2015).

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


8 valid minerals.

Rock Types Recorded

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

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Albite
Formula: Na(AlSi3O8)
ⓘ 'Amphibole Supergroup'
Formula: AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ⓘ 'Chlorite Group'
ⓘ 'Clinopyroxene Subgroup'
ⓘ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘ 'Garnet Group'
Formula: X3Z2(SiO4)3
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Muscovite var. Phengite
Formula: KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
ⓘ Omphacite
Formula: (NaaCabFe2+cMgd)(AleFe3+fFe2+gMgh)Si2O6
References:
Lombardo, B., Nervo, R., Compagnoni, R., Messigne, B., Kienast, J.R., Mevel, C., Fiora, L., Piccardo, G.B., and Lanza, R. (1978) Osservazioni preliminari sulle ofioliti metamorfiche del Monviso (Alpi Occidentali). Rendiconti della Società Italiana di Mineralogia e Petrologia, 34, 2, 253-305
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.
Rolfo, F., Benna, P., Cadoppi, P., Castelli, Favero-Longo, E., Giardino, M., Balestro, G., Belluso, E., Borghi, A., Cámara, F., Compagnoni, R., Ferrando, S., Festa, A., Forno, M.G., Giacometti, F., Gianotti, F., Groppo, C., Lombardo, B., Mosca, P., Perrone, G., Piervirotti, R., Rebay, G., and Rossetti, P. (2015) The Monviso Massif and the Cottian Alps as Symbols of the Alpine Chain and Geological Heritage in Piemonte, Italy. Geoheritage, 7, 65–84.
ⓘ Omphacite var. Chrome-Omphacite
Formula: (Ca,Na)(Mg,Cr3+,Al)Si2O6
References:
Lombardo, B., Nervo, R., Compagnoni, R., Messigne, B., Kienast, J.R., Mevel, C., Fiora, L., Piccardo, G.B., and Lanza, R. (1978) Osservazioni preliminari sulle ofioliti metamorfiche del Monviso (Alpi Occidentali). Rendiconti della Società Italiana di Mineralogia e Petrologia, 34, 2, 253-305
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.
Rolfo, F., Benna, P., Cadoppi, P., Castelli, Favero-Longo, E., Giardino, M., Balestro, G., Belluso, E., Borghi, A., Cámara, F., Compagnoni, R., Ferrando, S., Festa, A., Forno, M.G., Giacometti, F., Gianotti, F., Groppo, C., Lombardo, B., Mosca, P., Perrone, G., Piervirotti, R., Rebay, G., and Rossetti, P. (2015) The Monviso Massif and the Cottian Alps as Symbols of the Alpine Chain and Geological Heritage in Piemonte, Italy. Geoheritage, 7, 65–84.
ⓘ Quartz
Formula: SiO2
ⓘ Rutile
Formula: TiO2
ⓘ Titanite
Formula: CaTi(SiO4)O
ⓘ Zoisite
Formula: (CaCa)(AlAlAl)O[Si2O7][SiO4](OH)

Gallery:

(Ca,Na)(Mg,Cr3+,Al)Si2O6ⓘ Omphacite var. Chrome-Omphacite

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
ⓘRutile4.DB.05TiO2
Group 9 - Silicates
ⓘTitanite9.AG.15CaTi(SiO4)O
ⓘEpidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘZoisite9.BG.10(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
ⓘOmphacite9.DA.20(NaaCabFe2+cMgd)(AleFe3+fFe2+gMgh)Si2O6
ⓘvar. Chrome-Omphacite9.DA.20(Ca,Na)(Mg,Cr3+,Al)Si2O6
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘvar. Phengite9.EC.15KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
ⓘAlbite9.FA.35Na(AlSi3O8)
Unclassified
ⓘ'Amphibole Supergroup'-AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ⓘ'Chlorite Group'-
ⓘ'Clinopyroxene Subgroup'-
ⓘ'Garnet Group'-X3Z2(SiO4)3

List of minerals for each chemical element

HHydrogen
Hⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Hⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Hⓘ Zoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
OOxygen
Oⓘ AlbiteNa(AlSi3O8)
Oⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Oⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ Omphacite(NaaCabFec2+Mgd)(AleFef3+Feg2+Mgh)Si2O6
Oⓘ Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Oⓘ QuartzSiO2
Oⓘ RutileTiO2
Oⓘ TitaniteCaTi(SiO4)O
Oⓘ Zoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
Oⓘ Garnet GroupX3Z2(SiO4)3
Oⓘ Omphacite var. Chrome-Omphacite(Ca,Na)(Mg,Cr3+,Al)Si2O6
FFluorine
Fⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
NaSodium
Naⓘ AlbiteNa(AlSi3O8)
Naⓘ Omphacite(NaaCabFec2+Mgd)(AleFef3+Feg2+Mgh)Si2O6
Naⓘ Omphacite var. Chrome-Omphacite(Ca,Na)(Mg,Cr3+,Al)Si2O6
MgMagnesium
Mgⓘ Omphacite(NaaCabFec2+Mgd)(AleFef3+Feg2+Mgh)Si2O6
Mgⓘ Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Mgⓘ Omphacite var. Chrome-Omphacite(Ca,Na)(Mg,Cr3+,Al)Si2O6
AlAluminium
Alⓘ AlbiteNa(AlSi3O8)
Alⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Alⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ Omphacite(NaaCabFec2+Mgd)(AleFef3+Feg2+Mgh)Si2O6
Alⓘ Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Alⓘ Zoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
Alⓘ Omphacite var. Chrome-Omphacite(Ca,Na)(Mg,Cr3+,Al)Si2O6
SiSilicon
Siⓘ AlbiteNa(AlSi3O8)
Siⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Siⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ Omphacite(NaaCabFec2+Mgd)(AleFef3+Feg2+Mgh)Si2O6
Siⓘ Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Siⓘ QuartzSiO2
Siⓘ TitaniteCaTi(SiO4)O
Siⓘ Zoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
Siⓘ Garnet GroupX3Z2(SiO4)3
Siⓘ Omphacite var. Chrome-Omphacite(Ca,Na)(Mg,Cr3+,Al)Si2O6
ClChlorine
Clⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
KPotassium
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Kⓘ Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
CaCalcium
Caⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Caⓘ Omphacite(NaaCabFec2+Mgd)(AleFef3+Feg2+Mgh)Si2O6
Caⓘ TitaniteCaTi(SiO4)O
Caⓘ Zoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
Caⓘ Omphacite var. Chrome-Omphacite(Ca,Na)(Mg,Cr3+,Al)Si2O6
TiTitanium
Tiⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Tiⓘ RutileTiO2
Tiⓘ TitaniteCaTi(SiO4)O
CrChromium
Crⓘ Omphacite var. Chrome-Omphacite(Ca,Na)(Mg,Cr3+,Al)Si2O6
FeIron
Feⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Feⓘ Omphacite(NaaCabFec2+Mgd)(AleFef3+Feg2+Mgh)Si2O6
Feⓘ Muscovite var. PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2

Other Regions, Features and Areas containing this locality

Eurasian PlateTectonic Plate
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

Lombardo, B., Nervo, R., Compagnoni, R., Messigne, B., Kienast, J.R., Mevel, C., Fiora, L., Piccardo, G.B., and Lanza, R. (1978) Osservazioni preliminari sulle ofioliti metamorfiche del Monviso (Alpi Occidentali). Rendiconti della Società Italiana di Mineralogia e Petrologia, 34, 2, 253-305.
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.
Rolfo, F., Benna, P., Cadoppi, P., Castelli, Favero-Longo, E., Giardino, M., Balestro, G., Belluso, E., Borghi, A., Cámara, F., Compagnoni, R., Ferrando, S., Festa, A., Forno, M.G., Giacometti, F., Gianotti, F., Groppo, C., Lombardo, B., Mosca, P., Perrone, G., Piervirotti, R., Rebay, G., and Rossetti, P. (2015) The Monviso Massif and the Cottian Alps as Symbols of the Alpine Chain and Geological Heritage in Piemonte, Italy. Geoheritage, 7, 65–84; https://doi.org/10.1007/s12371-014-0097-9
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