Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Chaȋne de la Sioule Volcanic Field, Saint-Georges-de-Mons, Riom, Puy-de-Dôme, Auvergne-Rhône-Alpes, Francei
Regional Level Types
Chaȋne de la Sioule Volcanic FieldVolcanic Field
Saint-Georges-de-MonsCommune
RiomArrondissement
Puy-de-DômeDepartment
Auvergne-Rhône-AlpesRegion
FranceCountry

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Latitude & Longitude (WGS84):
45° 56' North , 2° 52' East
Latitude & Longitude (decimal):
45.93333,2.86667
GeoHash:
G#: u04j31zmn
GRN:
N31E02
Type:
Volcanic Field
Age:
33.9 Ma to present day
Geologic Time:
Oligocene to Quaternary
Köppen climate type:
Cfb : Temperate oceanic climate
Mindat Locality ID:
345152
Long-form identifier:
mindat:1:2:345152:9
GUID (UUID V4):
0
Other/historical names associated with this locality:
Petite Chaine des Puys


c. 50 small volcanoes, which form NE-trending line in a zone c. 50 km long and 11 km wide. They comprise lava flows and pyroclastic rocks.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


6 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ 'Alkali Feldspar'
ⓘ Anorthite
Formula: Ca(Al2Si2O8)
ⓘ Anorthite var. Labradorite
Formula: (Ca,Na)[Al(Al,Si)Si2O8]
ⓘ Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘ 'Fayalite-Forsterite Series'
ⓘ Leucite
Formula: K(AlSi2O6)
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ Magnetite var. Titanium-bearing Magnetite
Formula: Fe2+(Fe3+,Ti)2O4
ⓘ Nepheline
Formula: Na3K(Al4Si4O16)
ⓘ Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
ⓘ Phlogopite var. Titanium-bearing Phlogopite
Formula: KMg3(AlSi3O10)(OH)2

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘvar. Titanium-bearing Magnetite4.BB.05Fe2+(Fe3+,Ti)2O4
Group 9 - Silicates
ⓘAugite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘPhlogopite9.EC.20KMg3(AlSi3O10)(OH)2
ⓘvar. Titanium-bearing Phlogopite9.EC.20KMg3(AlSi3O10)(OH)2
ⓘNepheline9.FA.05Na3K(Al4Si4O16)
ⓘAnorthite9.FA.35Ca(Al2Si2O8)
ⓘvar. Labradorite9.FA.35(Ca,Na)[Al(Al,Si)Si2O8]
ⓘLeucite9.GB.05K(AlSi2O6)
Unclassified
ⓘ'Alkali Feldspar'-
ⓘ'Fayalite-Forsterite Series'-

List of minerals for each chemical element

HHydrogen
Hⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Hⓘ Phlogopite var. Titanium-bearing PhlogopiteKMg3(AlSi3O10)(OH)2
OOxygen
Oⓘ AnorthiteCa(Al2Si2O8)
Oⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Oⓘ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Oⓘ LeuciteK(AlSi2O6)
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ NephelineNa3K(Al4Si4O16)
Oⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Oⓘ Magnetite var. Titanium-bearing MagnetiteFe2+(Fe3+,Ti)2O4
Oⓘ Fayalite-Forsterite Series
Oⓘ Phlogopite var. Titanium-bearing PhlogopiteKMg3(AlSi3O10)(OH)2
NaSodium
Naⓘ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Naⓘ NephelineNa3K(Al4Si4O16)
MgMagnesium
Mgⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mgⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Mgⓘ Fayalite-Forsterite Series
Mgⓘ Phlogopite var. Titanium-bearing PhlogopiteKMg3(AlSi3O10)(OH)2
AlAluminium
Alⓘ AnorthiteCa(Al2Si2O8)
Alⓘ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Alⓘ LeuciteK(AlSi2O6)
Alⓘ NephelineNa3K(Al4Si4O16)
Alⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Alⓘ Phlogopite var. Titanium-bearing PhlogopiteKMg3(AlSi3O10)(OH)2
SiSilicon
Siⓘ AnorthiteCa(Al2Si2O8)
Siⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Siⓘ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Siⓘ LeuciteK(AlSi2O6)
Siⓘ NephelineNa3K(Al4Si4O16)
Siⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Siⓘ Fayalite-Forsterite Series
Siⓘ Phlogopite var. Titanium-bearing PhlogopiteKMg3(AlSi3O10)(OH)2
KPotassium
Kⓘ LeuciteK(AlSi2O6)
Kⓘ NephelineNa3K(Al4Si4O16)
Kⓘ PhlogopiteKMg3(AlSi3O10)(OH)2
Kⓘ Phlogopite var. Titanium-bearing PhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
Caⓘ AnorthiteCa(Al2Si2O8)
Caⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Caⓘ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
TiTitanium
Tiⓘ Magnetite var. Titanium-bearing MagnetiteFe2+(Fe3+,Ti)2O4
FeIron
Feⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ Magnetite var. Titanium-bearing MagnetiteFe2+(Fe3+,Ti)2O4
Feⓘ Fayalite-Forsterite Series

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

References

Brousse, R. & Lefèvre, C. 1990. Le volcanisme en France et en Europe limitrophe. «Guides géologiques régionaux». Masson, Paris.
Brousse, R. (1961). Minéralogie et pétrographie des roches volcaniques du Massif du Mont-Dore. Bull. Soc. Franc. Min4ral. Crist, 84, 245-259.
Maury, R. C., & RC, M. (1980). Le volcanisme tertiaire et quaternaire en France. Géologie de la France, Mémoires du Bureau de Recherches Géologiques et Minières, Paris, 107, 138-159.
Lenoir, X., Garrido, C. J., Bodinier, J. L., & Dautria, J. M. (2000). Contrasting lithospheric mantle domains beneath the Massif Central (France) revealed by geochemistry of peridotite xenoliths. Earth and Planetary Science Letters, 181(3), 359-375.
Woolley, Alan R. (2019) Alkaline Rocks and Carbonatites of the World. Part 4: Antarctica, Asia and Europe (excluding the former USSR), Australasia and Oceanic Islands. The Geological Society of London. doi:10.1144/mpar4p.323
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