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Pégut (Champs des mines), La Chapelle-sur-Usson, Jumeaux, Puy-de-Dôme, Auvergne-Rhône-Alpes, Francei
Regional Level Types
Pégut (Champs des mines)- not defined -
La Chapelle-sur-Usson- not defined -
Jumeaux- not defined -
Puy-de-DômeDepartment
Auvergne-Rhône-AlpesRegion
FranceCountry

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Key
Latitude & Longitude (WGS84):
45° 28' 6'' North , 3° 24' 45'' East
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Vernet-la-Varenne749 (2016)3.2km
Saint-Étienne-sur-Usson245 (2016)4.2km
Bansat212 (2016)5.3km
Chaméane140 (2016)5.8km
Lamontgie516 (2016)6.2km
Other/historical names associated with this locality:
Auvergne; Rhône-Alpes
Name(s) in local language(s):
Pégut (Champs des mines), La Chapelle-sur-Usson, Jumeaux, Puy-de-Dôme, Auvergne, France


Quarry and old adits, with several veins.
One of the very rare occurrences of pseudo-cubic amethyst crystals.

Located on private property.

Regions containing this locality

Eurasian PlateTectonic Plate
EuropeContinent

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


7 valid minerals.

Detailed Mineral List:

Calcite
Formula: CaCO3
Reference: Alfred Lacroix - Tome III de La Minéralogie de la France,1901, p. 73
Dolomite
Formula: CaMg(CO3)2
Reference: Jonathan Plasse collection
Galena
Formula: PbS
Reference: François Périnet Collection
Hematite
Formula: Fe2O3
Reference: Alfred Lacroix - Tome III de La Minéralogie de la France,1901, p. 73
Jarosite
Formula: KFe3+ 3(SO4)2(OH)6
Reference: Jonathan and Magalie Plasse Collection
'Limonite'
Formula: (Fe,O,OH,H2O)
Reference: Jonathan and Magalie Plasse Collection
'Psilomelane'
Formula: Mn, O
Reference: Jonathan and Magalie Plasse Collection
Pyrite
Formula: FeS2
Reference: Jonathan and Magalie Plasse Collection
Quartz
Formula: SiO2
Habit: SiO2
Colour: shesnut (marron) for the smoky quartz, white for the milky quartz
Reference: Jonathan Plasse collection S. Berger Collection
Quartz var: Amethyst
Formula: SiO2
Habit: SiO2
Colour: Purple
Description: Pseudo-cubic crystallization (89 °/90 °) unique to the world. Numerous phantoms crystals.
Reference: 207433; Jonathan Plasse collection S. Berger Collection
Quartz var: Ferruginous Quartz
Formula: SiO2
Reference: Jonathan and Magalie Plasse Collection
Quartz var: Pseudocubic Quartz
Formula: SiO2
Reference: François Périnet collection
Quartz var: Rock Crystal
Formula: SiO2
Habit: SiO2
Colour: translucide
Reference: Jonathan Plasse collection

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Galena2.CD.10PbS
Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
Hematite4.CB.05Fe2O3
Quartz4.DA.05SiO2
var: Amethyst4.DA.05SiO2
var: Ferruginous Quartz4.DA.05SiO2
var: Pseudocubic Quartz4.DA.05SiO2
var: Rock Crystal4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Dolomite5.AB.10CaMg(CO3)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Jarosite7.BC.10KFe3+3(SO4)2(OH)6
Unclassified Minerals, Rocks, etc.
'Limonite'-(Fe,O,OH,H2O)
'Psilomelane'-Mn, O

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
AB(XO3)2
Dolomite14.2.1.1CaMg(CO3)2
Group 30 - ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq
Jarosite30.2.5.1KFe3+ 3(SO4)2(OH)6
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Limonite'-(Fe,O,OH,H2O)
'Psilomelane'-Mn, O
Quartz
var: Amethyst
-SiO2
var: Ferruginous Quartz-SiO2
var: Pseudocubic Quartz-SiO2
var: Rock Crystal-SiO2

List of minerals for each chemical element

HHydrogen
H Limonite(Fe,O,OH,H2O)
H JarositeKFe3+ 3(SO4)2(OH)6
CCarbon
C CalciteCaCO3
C DolomiteCaMg(CO3)2
OOxygen
O Quartz (var: Amethyst)SiO2
O QuartzSiO2
O Quartz (var: Rock Crystal)SiO2
O CalciteCaCO3
O HematiteFe2O3
O Limonite(Fe,O,OH,H2O)
O Quartz (var: Ferruginous Quartz)SiO2
O PsilomelaneMn, O
O JarositeKFe3+ 3(SO4)2(OH)6
O DolomiteCaMg(CO3)2
O Quartz (var: Pseudocubic Quartz)SiO2
MgMagnesium
Mg DolomiteCaMg(CO3)2
SiSilicon
Si Quartz (var: Amethyst)SiO2
Si QuartzSiO2
Si Quartz (var: Rock Crystal)SiO2
Si Quartz (var: Ferruginous Quartz)SiO2
Si Quartz (var: Pseudocubic Quartz)SiO2
SSulfur
S PyriteFeS2
S JarositeKFe3+ 3(SO4)2(OH)6
S GalenaPbS
KPotassium
K JarositeKFe3+ 3(SO4)2(OH)6
CaCalcium
Ca CalciteCaCO3
Ca DolomiteCaMg(CO3)2
MnManganese
Mn PsilomelaneMn, O
FeIron
Fe HematiteFe2O3
Fe PyriteFeS2
Fe Limonite(Fe,O,OH,H2O)
Fe JarositeKFe3+ 3(SO4)2(OH)6
PbLead
Pb GalenaPbS

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
AUDIGIER, P., (1894) Histoire d’Auvergne, Mémoire de l’Académie des Sciences, Belles-Lettres et Arts de Clermont Ferrand, (Tome1), pp. 152-154
BARONNE DE BEAUSOLEIL, (1640), in GOBET (1779), Les anciens minéralogistes du royaume de France (première partie), p. 363.
CHERMETTE, A., (1976) L’améthyste d’Auvergne, Rev. Gemm. A. F. G. n°47 pp. 2-5.
DEMARTY, J., (1898) Les pierres d’Auvergne, in Revue d’Auvergne, Tome XV, Clermont-Ferrand, pp. 247-302.
LACROIX, A., (1892) Minéralogie de la France, Tome III, pp. 73-75, Librairie Albert Blanchard.
LE GRAND D’AUSSY, (1788) Voyage d’Auvergne, pp. 247-250
LE MONNIER, in GOBET (1779) Les anciens minéralogistes du royaume de France (seconde partie), pp.524-526.
PERICHAUD, J.-J., (1985) Où trouver les minéraux d’Auvergne (Puy-de-Dôme – Allier), Editions L’Instant Durable, p. 19.
RUDEL, A., (1966) Richesses Minéralogiques en Auvergne, Ed. Volcans (Clermont-Ferrand), pp. 101-111.

Documents

Title (click to view)YearAuthor
Exploitation de l’améthyste en Auvergne - Eléments de l’Historique 0François Périnet
Améthyste et microminéraux associés - Filons du Champ des Mines, Ravin de Pégut - La Chapelle-sur-Usson, Puy-de-Dôme - Collection Jonathan et Magalie Plasse0François Périnet

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