Vote for your favorite mineral in #MinCup26! - Monazite-(Ce) vs. Andalusite
It's a showdown with rare earth elemental ore Monazite-(Ce) and index mineral Andalusite.
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Guerphalès quarries, Glomel, Guingamp, Côtes-d'Armor, Brittany, Francei
Regional Level Types
Guerphalès quarriesGroup of Quarries
GlomelCommune
GuingampArrondissement
Côtes-d'ArmorDepartment
BrittanyRegion
FranceCountry

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PhotosMapsSearch
00742350017272071293168.jpg
Andalusite

Guerphalès quarries, Glomel, Guingamp, Côtes-d'Armor, Brittany, France
06340290017272071291126.jpg
Ilmenite, etc.

Guerphalès quarries, Glomel, Guingamp, Côtes-d'Armor, Brittany, France
00742350017272071293168.jpg
Andalusite

Guerphalès quarries, Glomel, Guingamp, Côtes-d'Armor, Brittany, France
06340290017272071291126.jpg
Ilmenite, etc.

Guerphalès quarries, Glomel, Guingamp, Côtes-d'Armor, Brittany, France
03446170017271999213157.jpg
Andalusite

Guerphalès quarries, Glomel, Guingamp, Côtes-d'Armor, Brittany, France
06340290017272071291126.jpg
Ilmenite, etc.

Guerphalès quarries, Glomel, Guingamp, Côtes-d'Armor, Brittany, France
Latitude & Longitude (WGS84):
48° 11' 23'' North , 3° 25' 12'' West
Latitude & Longitude (decimal):
48.19000,-3.42028
GeoHash:
G#: gbtd4htrj
GRN:
N33W02
Type:
Group of Quarries
Köppen climate type:
Cfb : Temperate oceanic climate
Nearest Settlements:
PlacePopulationDistance
Glomel1,535 (2016)4.1km
Paule682 (2016)5.4km
Plouray1,105 (2016)5.5km
Plévin811 (2016)6.6km
Tréogan123 (2016)7.2km
Mindat Locality ID:
42243
Long-form identifier:
mindat:1:2:42243:6
GUID (UUID V4):
0


Large quarry.
Andalusite (locally known as "kerphalite") in schists.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


7 valid minerals.

Detailed Mineral List:

ⓘ Andalusite
Formula: Al2(SiO4)O
Description: Single crystals and twins, usually between 5-8cm.
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ Graphite
Formula: C
ⓘ Ilmenite
Formula: Fe2+TiO3
ⓘ Pyrite
Formula: FeS2
ⓘ Pyrrhotite
Formula: Fe1-xS
ⓘ Rutile
Formula: TiO2

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘGraphite1.CB.05aC
Group 2 - Sulphides and Sulfosalts
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘPyrrhotite2.CC.10Fe1-xS
ⓘPyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
ⓘIlmenite4.CB.05Fe2+TiO3
ⓘRutile4.DB.05TiO2
Group 9 - Silicates
ⓘAndalusite9.AF.10Al2(SiO4)O

List of minerals for each chemical element

CCarbon
Cⓘ GraphiteC
OOxygen
Oⓘ AndalusiteAl2(SiO4)O
Oⓘ IlmeniteFe2+TiO3
Oⓘ RutileTiO2
AlAluminium
Alⓘ AndalusiteAl2(SiO4)O
SiSilicon
Siⓘ AndalusiteAl2(SiO4)O
SSulfur
Sⓘ ChalcopyriteCuFeS2
Sⓘ PyriteFeS2
Sⓘ PyrrhotiteFe1-xS
TiTitanium
Tiⓘ IlmeniteFe2+TiO3
Tiⓘ RutileTiO2
FeIron
Feⓘ ChalcopyriteCuFeS2
Feⓘ IlmeniteFe2+TiO3
Feⓘ PyriteFeS2
Feⓘ PyrrhotiteFe1-xS
CuCopper
Cuⓘ ChalcopyriteCuFeS2

Other Regions, Features and Areas containing this locality

Eurasian PlateTectonic Plate
EuropeContinent

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

Pierrot, Roland; Chauris, Louis; Laforêt, Claude (1975) Inventaire minéralogique de la France - Côtes-du-Nord (22) - Inventaire minéralogique de la France No. 5. Editions du BRGM.pp.58-59
Lukas, Yann (1978) Roches et minéraux de Bretagne. Ouest France. p.1-33.p.7 - + p.30
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