Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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Serpentine Subgroup from
Monte Duria peridotite (south), Peglio, Como Province, Lombardy, Italy


Locality type:Outcrop
Classification
Species:'Serpentine Subgroup' (not an IMA approved species)
Formula:D3[Si2O5](OH)4
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Serpentine Subgroup data
Locality Data:Click here to view Monte Duria peridotite (south), Peglio, Como Province, Lombardy, Italy
Data Identifiers
Mindat Occurrence Record ID:1439979
Long-form Identifier:1:3:1439979:8
GUID (UUID V4):0
Nearest other occurrences of Serpentine Subgroup
0.7km (0.5 miles) ⓘMonte Duria peridotite (east), Peglio, Como Province, Lombardy, Italy
3.3km (2.1 miles) ⓘBorgo peridotite outcrop, Livo, Como Province, Lombardy, Italy
43.7km (27.1 miles) ⓘVal Sora Quarry, Torre di Santa Maria, Sondrio Province, Lombardy, Italy
43.9km (27.3 miles) ⓘPlatta nappe, Surses, Albula Region, Grisons, Switzerland
45.9km (28.5 miles) ⓘCastellaccio Quarry, Chiesa in Valmalenco, Sondrio Province, Lombardy, Italy
50.1km (31.1 miles) ⓘScerscen Valley, Lanzada, Sondrio Province, Lombardy, Italy
69.6km (43.2 miles) ⓘGigenstafel, St Annabach, Hospental, Urseren, Uri, Switzerland
70.5km (43.8 miles) ⓘSerpentinite quarry, Chämleten (Kemmleten), Hospental, Urseren, Uri, Switzerland
83.7km (52.0 miles) ⓘTot Alp, Wolfgang, Davos, Prättigau/Davos Region, Grisons, Switzerland
84.0km (52.2 miles) ⓘAlvani Mine, Campello Monti, Valstrona, Verbano-Cusio-Ossola Province, Piedmont, Italy
References
Hermann, J., Rubatto, D., and Trommsdorff, V. (2006) Sub-solidus Oligocene zircon formationin garnet peridotite during fast decompression and fluid infiltration (Duria, Central Alps). Mineralogy and Petrology, 88, 181–206.
Tumiati, Simone, Zanchetta, Stefano, Pellegrino, Luca, Ferrario, Claudia, Casartelli, Stefano, Malaspina, Nadia (2018) Granulite-facies Overprint in Garnet Peridotites and Kyanite Eclogites of Monte Duria (Central Alps, Italy): Clues from Srilankite- and Sapphirine-Bearing Symplectites. Journal of Petrology, 59 (1) 115-151 doi:10.1093/petrology/egy021
 
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