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Cherty tuffite outcrops, Kerdreux, Crozon, Crozon Peninsula, Finistère, Brittany, Francei
Regional Level Types
Cherty tuffite outcropsGroup of Outcrops
Kerdreux- not defined -
Crozon- not defined -
Crozon PeninsulaPeninsula
FinistèreDepartment
BrittanyRegion
FranceCountry

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Latitude & Longitude (WGS84): 48° 10' 4'' North , 4° 33' 14'' West
Latitude & Longitude (decimal): 48.16794,-4.55406
GeoHash:G#: gbsf02eyd
Locality type:Group of Outcrops
Köppen climate type:Cfb : Temperate oceanic climate
Nearest Settlements:
PlacePopulationDistance
Crozon8,123 (2016)9.9km
Beuzec-Cap-Sizun1,097 (2016)10.7km
Camaret-sur-Mer2,612 (2016)12.3km
Goulien450 (2016)12.8km
Poullan-sur-Mer1,769 (2016)13.9km


In cliffs north of the Kerdreux dolerite sill.
Beds and layers (0.1 to 1 meter thick) of volcanic (Caradoc) origin.

Regions containing this locality

Eurasian PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


9 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and 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:

Albite
Formula: Na(AlSi3O8)
Reference: R.PIERROT, L. CHAURIS, C. LAFORET (1973) : "Inventaire minéralogique de la France : 29- Finistère.", B.R.G.M. Paris.
Chalcopyrite
Formula: CuFeS2
Reference: Pierrot, R., Chauris, L., and Laforet, C. (1973) Inventaire minéralogique de la France: 29- Finistère. B.R.G.M. Paris.
'Chlorite Group'
Reference: R.PIERROT, L. CHAURIS, C. LAFORET (1973) : "Inventaire minéralogique de la France : 29- Finistère.", B.R.G.M. Paris.
Covellite
Formula: CuS
Reference: Pierrot, R., Chauris, L., and Laforet, C. (1973) Inventaire minéralogique de la France: 29- Finistère. B.R.G.M. Paris.
Graphite
Formula: C
Reference: Pierrot, R., Chauris, L., and Laforet, C. (1973) Inventaire minéralogique de la France: 29- Finistère. B.R.G.M. Paris.
Mackinawite
Formula: (Fe,Ni)9S8
Reference: R.PIERROT, L. CHAURIS, C. LAFORET (1973) : "Inventaire minéralogique de la France : 29- Finistère.", B.R.G.M. Paris.
Pyrite
Formula: FeS2
Reference: R.PIERROT, L. CHAURIS, C. LAFORET (1973) : "Inventaire minéralogique de la France : 29- Finistère.", B.R.G.M. Paris.
Pyrrhotite
Formula: Fe7S8
Reference: Pierrot, R., Chauris, L., and Laforet, C. (1973) Inventaire minéralogique de la France: 29- Finistère. B.R.G.M. Paris.
Quartz
Formula: SiO2
Reference: R.PIERROT, L. CHAURIS, C. LAFORET (1973) : "Inventaire minéralogique de la France : 29- Finistère.", B.R.G.M. Paris.
Sphalerite
Formula: ZnS
Reference: Pierrot, R., Chauris, L., and Laforet, C. (1973) Inventaire minéralogique de la France: 29- Finistère. B.R.G.M. Paris.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Graphite1.CB.05aC
Group 2 - Sulphides and Sulfosalts
Chalcopyrite2.CB.10aCuFeS2
Covellite2.CA.05aCuS
Mackinawite2.CC.25(Fe,Ni)9S8
Pyrite2.EB.05aFeS2
Pyrrhotite2.CC.10Fe7S8
Sphalerite2.CB.05aZnS
Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
Group 9 - Silicates
Albite9.FA.35Na(AlSi3O8)
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Semi-metals and non-metals
Graphite1.3.6.2C
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 9:8
Mackinawite2.7.2.1(Fe,Ni)9S8
AmXp, with m:p = 1:1
Covellite2.8.12.1CuS
Pyrrhotite2.8.10.1Fe7S8
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Albite76.1.3.1Na(AlSi3O8)
Unclassified Minerals, Mixtures, etc.
'Chlorite Group'-

List of minerals for each chemical element

CCarbon
C GraphiteC
OOxygen
O QuartzSiO2
O AlbiteNa(AlSi3O8)
NaSodium
Na AlbiteNa(AlSi3O8)
AlAluminium
Al AlbiteNa(AlSi3O8)
SiSilicon
Si QuartzSiO2
Si AlbiteNa(AlSi3O8)
SSulfur
S SphaleriteZnS
S ChalcopyriteCuFeS2
S CovelliteCuS
S PyriteFeS2
S PyrrhotiteFe7S8
S Mackinawite(Fe,Ni)9S8
FeIron
Fe ChalcopyriteCuFeS2
Fe PyriteFeS2
Fe PyrrhotiteFe7S8
Fe Mackinawite(Fe,Ni)9S8
NiNickel
Ni Mackinawite(Fe,Ni)9S8
CuCopper
Cu ChalcopyriteCuFeS2
Cu CovelliteCuS
ZnZinc
Zn SphaleriteZnS

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Paleozoic
251.902 - 541 Ma



ID: 3136594
Palaeozoic undifferentiated

Age: Phanerozoic (251.902 - 541 Ma)

Description: low grade metamorphic

Lithology: Metamorphic

Reference: Asch, K. The 1:5M International Geological Map of Europe and Adjacent Areas: Development and Implementation of a GIS-enabled Concept. Geologisches Jahrbuch, SA 3. [147]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License


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