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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Le Treuil vein, Marmaissat, Lanau, Torsiac, Brioude, Haute-Loire, Auvergne-Rhône-Alpes, Francei
Regional Level Types
Le Treuil veinVein
Marmaissat- not defined -
Lanau- not defined -
TorsiacCommune
BrioudeArrondissement
Haute-LoireDepartment
Auvergne-Rhône-AlpesRegion
FranceCountry

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Latitude & Longitude (WGS84):
45° North , 3° East (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~3km
GRN:
N31E02
Type:
Vein
Köppen climate type:
Cfb : Temperate oceanic climate
Mindat Locality ID:
54030
Long-form identifier:
mindat:1:2:54030:7
GUID (UUID V4):
0
Other/historical names associated with this locality:
Auvergne; Rhône-Alpes


The Marmaissat claim extends into the Puy-de-Dôme (near Apchat) and Haute-Loire departments (Blesle, Torsiac).
The veins are located in the Auze ravine, 3 km West of Lanau village (Haute-Loire). The Le Treuil vein is located on its north slope, 250 meters east of the main pit, along the path coming from Marmaissat.

Quartz vein, clay, breccias with elements of siderite and ferroan calcite.
Host rocks : Leptynites and biotite-sillimanite gneisses.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


10 valid minerals.

Detailed Mineral List:

ⓘ Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
ⓘ Arsenopyrite
Formula: FeAsS
ⓘ Berthierite
Formula: FeSb2S4
ⓘ Calcite
Formula: CaCO3
ⓘ Calcite var. Iron-bearing Calcite
Formula: (Ca,Fe)CO3
ⓘ Gold
Formula: Au
ⓘ 'Melnikovite'
ⓘ Pyrite
Formula: FeS2
ⓘ Quartz
Formula: SiO2
ⓘ Siderite
Formula: FeCO3
ⓘ Sphalerite
Formula: ZnS
ⓘ Stibnite
Formula: Sb2S3

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘGold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
ⓘSphalerite2.CB.05aZnS
ⓘStibnite2.DB.05Sb2S3
ⓘPyrite2.EB.05aFeS2
ⓘArsenopyrite2.EB.20FeAsS
ⓘBerthierite2.HA.20FeSb2S4
Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘSiderite5.AB.05FeCO3
ⓘCalcite
var. Iron-bearing Calcite		5.AB.05(Ca,Fe)CO3
ⓘAnkerite5.AB.10Ca(Fe2+,Mg)(CO3)2
Unclassified
ⓘ'Melnikovite'-

List of minerals for each chemical element

CCarbon
Cⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Cⓘ CalciteCaCO3
Cⓘ SideriteFeCO3
Cⓘ Calcite var. Iron-bearing Calcite(Ca,Fe)CO3
OOxygen
Oⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Oⓘ CalciteCaCO3
Oⓘ QuartzSiO2
Oⓘ SideriteFeCO3
Oⓘ Calcite var. Iron-bearing Calcite(Ca,Fe)CO3
MgMagnesium
Mgⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
SiSilicon
Siⓘ QuartzSiO2
SSulfur
Sⓘ ArsenopyriteFeAsS
Sⓘ BerthieriteFeSb2S4
Sⓘ PyriteFeS2
Sⓘ SphaleriteZnS
Sⓘ StibniteSb2S3
CaCalcium
Caⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Caⓘ CalciteCaCO3
Caⓘ Calcite var. Iron-bearing Calcite(Ca,Fe)CO3
FeIron
Feⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Feⓘ ArsenopyriteFeAsS
Feⓘ BerthieriteFeSb2S4
Feⓘ PyriteFeS2
Feⓘ SideriteFeCO3
Feⓘ Calcite var. Iron-bearing Calcite(Ca,Fe)CO3
ZnZinc
Znⓘ SphaleriteZnS
AsArsenic
Asⓘ ArsenopyriteFeAsS
SbAntimony
Sbⓘ BerthieriteFeSb2S4
Sbⓘ StibniteSb2S3
AuGold
Auⓘ GoldAu

Other Regions, Features and Areas containing this locality

Eurasian PlateTectonic Plate
EuropeContinent
France

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