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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Trébeurdenite from
Mont Saint-Michel marshes, Le Mont-Saint-Michel, Avranches, Manche, Normandy, France


Locality type:Marshes
Classification
Species:Trébeurdenite
Formula:Fe22+Fe43+O2(OH)10CO3 · 3H2O
Comments:Intimately intergrown with Mössbauerite
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Trébeurdenite data
Locality Data:Click here to view Mont Saint-Michel marshes, Le Mont-Saint-Michel, Avranches, Manche, Normandy, France
Data Identifiers
Mindat Occurrence Record ID:818323
Long-form Identifier:1:3:818323:1
GUID (UUID V4):0
Nearest other occurrences of Trébeurdenite
15.5km (9.6 miles) ⓘMont Saint-Michel Bay, Carolles, Avranches, Manche, Normandy, France
35.1km (21.8 miles) ⓘSalt marsh, Saint-Malo, Ille-et-Vilaine, Brittany, France
46.1km (28.7 miles) ⓘSalt marsh, Lancieux, Dinan, Côtes-d'Armor, Brittany, France
References
Génin, J.-M. R., Mills, S. J., Christy, A. G., Guérin, O., Herbillon, A. J., Kuzmann, E., Ona-Nguema, G., Ruby, C., Upadhyay, C. (2014) Mössbauerite, Fe63+O4(OH)8[CO3]·3H2O, the fully oxidized ‘green rust’ mineral from Mont Saint-Michel Bay, France. Mineralogical Magazine, 78 (2) 447-465 doi:10.1180/minmag.2014.078.2.14
 
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