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Mosset rare earths deposit, Mosset, Prades, Pyrénées-Orientales, Occitanie, Francei
Regional Level Types
Mosset rare earths depositDeposit
MossetCommune
PradesArrondissement
Pyrénées-OrientalesDepartment
OccitanieRegion
FranceCountry

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Latitude & Longitude (WGS84):
42° North , 2° East (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~10km
GRN:
N29E02
Type:
Deposit
Köppen climate type:
Cfb : Temperate oceanic climate
Mindat Locality ID:
256242
Long-form identifier:
mindat:1:2:256242:4
GUID (UUID V4):
0
Other/historical names associated with this locality:
Languedoc-Roussillon
Name(s) in local language(s):
Indice à terres rares de Mosset


This newly recognised deposit near the village of Mosset ("Pyrénées Orientales") reveals a unusual geological context and a specific mineralogy. The deposit is related to a granitic massif ("Millas pluton") cutting an Ordovician series ("Jujols schists") with carbonate bands transformed in "cipolins". An "iron hat" (gossan) type metasomatic skarn developed from this contact, accompanied by significant quantities of manganese. Some layers of lanthanite-(Ce) appear among the ex-carbonate cipolins, in relation with the gradual transformation of limestone up to a total leaching with an advanced silicification (allophanes, hyalite...). To our best knowledge this is the first deposit in France of limited size but with significant quantities of lanthanite, notable for its crystallization. Origin of rare earths, whether under the form of lanthanite-(Ce) or associated with cerium cobaltiferous wad remains unknown.

Select Mineral List Type

StandardDetailedGalleryStrunzChemical Elements

Detailed Mineral List:

ⓘAllophane
Formula:(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
ⓘArsenopyrite
Formula:FeAsS
ⓘAsbolane
Formula:(Ni,Co)2-xMn4+(O,OH)4 · nH2O
ⓘChalcopyrite
Formula:CuFeS2
ⓘFelsőbányaite
Formula:Al4(SO4)(OH)10 · 4H2O
ⓘLanthanite-(Ce)
Formula:(Ce,La,Nd)2(CO3)3 · 8H2O
ⓘ'Manganese Oxides'
ⓘOpal
Formula:SiO2 · nH2O
ⓘOpal var. Opal-AN
Formula:SiO2 · nH2O
ⓘPyrite
Formula:FeS2

Gallery:

(Al2O3)(SiO2)1.3-2 · 2.5-3H2OⓘAllophane
Al4(SO4)(OH)10 · 4H2OⓘFelsőbányaite
(Ce,La,Nd)2(CO3)3 · 8H2OⓘLanthanite-(Ce)
ⓘ'Manganese Oxides'

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘPyrite2.EB.05aFeS2
ⓘArsenopyrite2.EB.20FeAsS
Group 4 - Oxides and Hydroxides
ⓘOpal
var. Opal-AN		4.DA.10SiO2 · nH2O
ⓘ4.DA.10SiO2 · nH2O
ⓘAsbolane4.FL.30(Ni,Co)2-xMn4+(O,OH)4 · nH2O
Group 5 - Nitrates and Carbonates
ⓘLanthanite-(Ce)5.CC.25(Ce,La,Nd)2(CO3)3 · 8H2O
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘFelsőbányaite7.DD.05Al4(SO4)(OH)10 · 4H2O
Group 9 - Silicates
ⓘAllophane9.ED.20(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
Unclassified
ⓘ'Manganese Oxides'-

List of minerals for each chemical element

HHydrogen
HⓘAllophane(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
HⓘAsbolane(Ni,Co)2-xMn4+(O,OH)4 · nH2O
HⓘFelsőbányaiteAl4(SO4)(OH)10 · 4H2O
HⓘOpal var.Opal-ANSiO2 · nH2O
HⓘLanthanite-(Ce)(Ce,La,Nd)2(CO3)3 · 8H2O
HⓘOpalSiO2 · nH2O
CCarbon
CⓘLanthanite-(Ce)(Ce,La,Nd)2(CO3)3 · 8H2O
OOxygen
OⓘAllophane(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
OⓘAsbolane(Ni,Co)2-xMn4+(O,OH)4 · nH2O
OⓘFelsőbányaiteAl4(SO4)(OH)10 · 4H2O
OⓘOpal var.Opal-ANSiO2 · nH2O
OⓘLanthanite-(Ce)(Ce,La,Nd)2(CO3)3 · 8H2O
OⓘOpalSiO2 · nH2O
AlAluminium
AlⓘAllophane(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
AlⓘFelsőbányaiteAl4(SO4)(OH)10 · 4H2O
SiSilicon
SiⓘAllophane(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
SiⓘOpal var.Opal-ANSiO2 · nH2O
SiⓘOpalSiO2 · nH2O
SSulfur
SⓘArsenopyriteFeAsS
SⓘChalcopyriteCuFeS2
SⓘFelsőbányaiteAl4(SO4)(OH)10 · 4H2O
SⓘPyriteFeS2
MnManganese
MnⓘAsbolane(Ni,Co)2-xMn4+(O,OH)4 · nH2O
FeIron
FeⓘArsenopyriteFeAsS
FeⓘChalcopyriteCuFeS2
FeⓘPyriteFeS2
CoCobalt
CoⓘAsbolane(Ni,Co)2-xMn4+(O,OH)4 · nH2O
NiNickel
NiⓘAsbolane(Ni,Co)2-xMn4+(O,OH)4 · nH2O
CuCopper
CuⓘChalcopyriteCuFeS2
AsArsenic
AsⓘArsenopyriteFeAsS
LaLanthanum
LaⓘLanthanite-(Ce)(Ce,La,Nd)2(CO3)3 · 8H2O
CeCerium
CeⓘLanthanite-(Ce)(Ce,La,Nd)2(CO3)3 · 8H2O
NdNeodymium
NdⓘLanthanite-(Ce)(Ce,La,Nd)2(CO3)3 · 8H2O

Other Regions, Features and Areas containing this locality

Eurasian PlateTectonic Plate
EuropeContinent
France

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, pleaseregister so you can add to our database. This locality information is for reference purposes only. You should never attempt tovisit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holdersfor access and that you are aware of all safety precautions necessary.

References

Remy, P., Gatel, P., Meisser, N. (2014): Indice à terres rares de Mosset (Pyrénées-Orientales). Le Cahier des Micromonteurs, 1-2014, 3-17.
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