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La Redonde, Allègre, Le Puy-en-Velay, Haute-Loire, Auvergne-Rhône-Alpes, Francei
Regional Level Types
La Redonde- not defined -
AllègreCommune
Le Puy-en-VelayArrondissement
Haute-LoireDepartment
Auvergne-Rhône-AlpesRegion
FranceCountry

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PhotosMapsSearch
Latitude & Longitude (WGS84):
45° North , 3° East (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~5km
Köppen climate type:
Mindat Locality ID:
52322
Long-form identifier:
mindat:1:2:52322:1
GUID (UUID V4):
b2580fd3-fabe-4775-98f0-40cdaca690ac
Other/historical names associated with this locality:
Auvergne; Rhône-Alpes


This vein, complex in structure, cuts across road D 134, 800 meters SW from La Redonde hamlet. Hosts rocks : Velay granite and migmatites.
It can be followed on 2 kilometers to the SW (Les Auvagniers and Reyrat woods).
Several mineralizing stages are known:
a) Microbrecciated black quartz with arsenopyrite
b) Low deposits of dark purple fluorite with agate and hematoid/white quartz crystals
c) Deposits of banded purple/green fluorite (cubic or octahedral) and white baryte blades alternating with quartz
d) Dissolution of the fluorite providing perimorphs
e) Very low deposits of pale blue/colorless cubic fluorite with baryte and galena in the cavities.
f) Alteration of the primary sulphides and formation of secondary minerals

This deposit was mined briefly for baryte in the late 1920s but stocks proved too small for a profitable operation. Today, the adit is collapsed and the shaft is backfilled since 2009.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


10 valid minerals.

Detailed Mineral List:

Arsenopyrite
Formula: FeAsS
Baryte
Formula: BaSO4
Fluorite
Formula: CaF2
Galena
Formula: PbS
Goethite
Formula: α-Fe3+O(OH)
Hematite
Formula: Fe2O3
Kaolinite
Formula: Al2(Si2O5)(OH)4
Pyrite
Formula: FeS2
Pyromorphite
Formula: Pb5(PO4)3Cl
Quartz
Formula: SiO2
Quartz var. Agate
Quartz var. Chalcedony
Formula: SiO2

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Galena2.CD.10PbS
Pyrite2.EB.05aFeS2
Arsenopyrite2.EB.20FeAsS
Group 3 - Halides
Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
Goethite4.00.α-Fe3+O(OH)
Hematite4.CB.05Fe2O3
Quartz
var. Agate
4.DA.05SiO2
var. Chalcedony4.DA.05SiO2
4.DA.05SiO2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Baryte7.AD.35BaSO4
Group 8 - Phosphates, Arsenates and Vanadates
Pyromorphite8.BN.05Pb5(PO4)3Cl
Group 9 - Silicates
Kaolinite9.ED.05Al2(Si2O5)(OH)4

List of minerals for each chemical element

HHydrogen
H Goethiteα-Fe3+O(OH)
H KaoliniteAl2(Si2O5)(OH)4
OOxygen
O BaryteBaSO4
O Quartz var. ChalcedonySiO2
O Goethiteα-Fe3+O(OH)
O HematiteFe2O3
O KaoliniteAl2(Si2O5)(OH)4
O PyromorphitePb5(PO4)3Cl
O QuartzSiO2
FFluorine
F FluoriteCaF2
AlAluminium
Al KaoliniteAl2(Si2O5)(OH)4
SiSilicon
Si Quartz var. ChalcedonySiO2
Si KaoliniteAl2(Si2O5)(OH)4
Si QuartzSiO2
PPhosphorus
P PyromorphitePb5(PO4)3Cl
SSulfur
S ArsenopyriteFeAsS
S BaryteBaSO4
S GalenaPbS
S PyriteFeS2
ClChlorine
Cl PyromorphitePb5(PO4)3Cl
CaCalcium
Ca FluoriteCaF2
FeIron
Fe ArsenopyriteFeAsS
Fe Goethiteα-Fe3+O(OH)
Fe HematiteFe2O3
Fe PyriteFeS2
AsArsenic
As ArsenopyriteFeAsS
BaBarium
Ba BaryteBaSO4
PbLead
Pb GalenaPbS
Pb PyromorphitePb5(PO4)3Cl

Other Regions, Features and Areas containing this locality

Eurasian PlateTectonic Plate
EuropeContinent
France

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