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Porz Mellec, Plestin-les-Grèves, Côtes-d'Armor, Brittany, Francei
Regional Level Types
Porz Mellec- not defined -
Plestin-les-Grèves- not defined -
Côtes-d'ArmorDepartment
BrittanyRegion
FranceCountry

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Key
Lock Map
Latitude & Longitude (WGS84):
48° 40' 57'' North , 3° 37' 24'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Locquirec1,367 (2016)2.0km
Plestin-les-Grèves3,700 (2016)2.7km
Saint-Michel-en-Grève419 (2016)4.2km
Trédrez-Locquémeau1,456 (2018)4.6km
Tréduder171 (2016)5.5km


Greenschists.

"It has been proven that one can find flakes of gold on the beach at Porsmellec." [Belot, 1978]

Regions containing this locality

Eurasian PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


15 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:

Actinolite
Formula: ☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Reference: Chauris, L. (2014): Minéraux de Bretagne, Les Editions du Piat, 146.
Bornite
Formula: Cu5FeS4
Reference: Chauris, L. (2014) Minéraux de Bretagne, Les Editions du Piat, 43.
Calcite
Formula: CaCO3
Reference: Chauris, L. (2014): Minéraux de Bretagne, Les Editions du Piat, 146.
Chalcocite
Formula: Cu2S
Reference: Chauris, L. (2014) Minéraux de Bretagne, Les Editions du Piat, 43.
Chalcopyrite
Formula: CuFeS2
Reference: Chauris, L. (2014) Minéraux de Bretagne, Les Editions du Piat, 61.
'Chlorite Group'
Reference: Chauris, L. (2014): Minéraux de Bretagne, Les Editions du Piat, 94.; Chauris, L. (2014): Minéraux de Bretagne, Les Editions du Piat, 146.
Digenite
Formula: Cu9S5
Reference: Chauris, L. (2014) Minéraux de Bretagne, Les Editions du Piat, 62.
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: Pierrot R., Chauris L., Laforêt C. (1975), Inventaire minéralogique de la France, Ed. BRGM, n°5, Côtes du Nord, pp: 110-113
Gold
Formula: Au
Reference: Pierrot, R., Chauris, L., and Laforêt, C. (1975) Inventaire minéralogique de la France. Ed. BRGM, n°5, Côtes du Nord, 110-113.; Lukas, Yann (1978) Roches et minéraux de Bretagne. Editions Ouest-France, 33 pp.; Belot, Victor R. (1978) Guide des minéraux, coquillages et fossiles: où les trouver en France, comment les reconnaître et les collectionner (Guides Horay). Pierre Horay (Ed.), 224 pp.
Hematite
Formula: Fe2O3
Reference: Chauris, L. (2014) Minéraux de Bretagne, Les Editions du Piat, 35.
Hessite
Formula: Ag2Te
Reference: Chauris, L. (2014) Minéraux de Bretagne, Les Editions du Piat, 35.
Idaite
Formula: Cu5FeS6
Reference: Chauris, L. (2014) Minéraux de Bretagne, Les Editions du Piat, 64.
Magnetite
Formula: Fe2+Fe3+2O4
Habit: Octaedric xl
Colour: Black
Reference: Pierrot R., Chauris L., Laforêt C. (1975), Inventaire minéralogique de la France, Ed. BRGM, n°5, Côtes du Nord, pp: 110-113
Malachite
Formula: Cu2(CO3)(OH)2
Reference: Chauris, L. (2014) Minéraux de Bretagne, Les Editions du Piat, 62.
Quartz
Formula: SiO2
Reference: Chauris, L. (2014) Minéraux de Bretagne, Les Editions du Piat, 43.
Tellurium
Formula: Te
Reference: Chauris, L. (2014) Minéraux de Bretagne, Les Editions du Piat, 43.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Gold1.AA.05Au
Tellurium1.CC.10Te
Group 2 - Sulphides and Sulfosalts
Bornite2.BA.15Cu5FeS4
Chalcocite2.BA.05Cu2S
Chalcopyrite2.CB.10aCuFeS2
Digenite2.BA.10Cu9S5
Hessite2.BA.60Ag2Te
Idaite2.CB.15aCu5FeS6
Group 4 - Oxides and Hydroxides
Hematite4.CB.05Fe2O3
Magnetite4.BB.05Fe2+Fe3+2O4
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Malachite5.BA.10Cu2(CO3)(OH)2
Group 9 - Silicates
Actinolite9.DE.10☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Gold1.1.1.1Au
Semi-metals and non-metals
Tellurium1.3.4.2Te
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Chalcocite2.4.7.1Cu2S
Digenite2.4.7.3Cu9S5
Hessite2.4.2.1Ag2Te
AmBnXp, with (m+n):p = 3:2
Bornite2.5.2.1Cu5FeS4
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
Idaite2.9.14.1Cu5FeS6
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Malachite16a.3.1.1Cu2(CO3)(OH)2
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Epidote58.2.1a.7{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
Actinolite-☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
'Chlorite Group'-

List of minerals for each chemical element

HHydrogen
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H MalachiteCu2(CO3)(OH)2
H Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
CCarbon
C MalachiteCu2(CO3)(OH)2
C CalciteCaCO3
OOxygen
O MagnetiteFe2+Fe23+O4
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O HematiteFe2O3
O QuartzSiO2
O MalachiteCu2(CO3)(OH)2
O CalciteCaCO3
O Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
MgMagnesium
Mg Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
AlAluminium
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
SiSilicon
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si QuartzSiO2
Si Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
SSulfur
S ChalcociteCu2S
S BorniteCu5FeS4
S ChalcopyriteCuFeS2
S DigeniteCu9S5
S IdaiteCu5FeS6
CaCalcium
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca CalciteCaCO3
Ca Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
FeIron
Fe MagnetiteFe2+Fe23+O4
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe HematiteFe2O3
Fe BorniteCu5FeS4
Fe ChalcopyriteCuFeS2
Fe IdaiteCu5FeS6
Fe Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
CuCopper
Cu ChalcociteCu2S
Cu BorniteCu5FeS4
Cu ChalcopyriteCuFeS2
Cu MalachiteCu2(CO3)(OH)2
Cu DigeniteCu9S5
Cu IdaiteCu5FeS6
AgSilver
Ag HessiteAg2Te
TeTellurium
Te HessiteAg2Te
Te TelluriumTe
AuGold
Au GoldAu

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

Neoproterozoic
541 - 1000 Ma



ID: 3188480
Neoproterozoic tectonic rocks

Age: Neoproterozoic (541 - 1000 Ma)

Lithology: Mudstone-carbonate-sandstone-conglomerate

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Neoproterozoic
541 - 1000 Ma



ID: 3147571
Proterozoic III meta-sediment

Age: Neoproterozoic (541 - 1000 Ma)

Description: low grade metamorphic

Lithology: Meta-sediment group

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

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Pierrot, R., Chauris, L., and Laforêt, C. (1975) Inventaire minéralogique de la France. Ed. BRGM, n°5, Côtes du Nord, 110-113.
Belot, Victor R. (1978) Guide des minéraux, coquillages et fossiles: où les trouver en France, comment les reconnaître et les collectionner (Guides Horay). Pierre Horay (Ed.), 224 pp.
Lukas, Yann (1978) Roches et minéraux de Bretagne. Editions Ouest-France, 33 pp. [p. 13.]


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.
 
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