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⇱ Île Longue, Crozon, Châteaulin, Finistère, Brittany, France

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Île Longue, Crozon, Châteaulin, Finistère, Brittany, Francei
Regional Level Types
Île Longue- not defined -
CrozonCommune
ChâteaulinArrondissement
FinistèreDepartment
BrittanyRegion
FranceCountry

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Latitude & Longitude (WGS84):
48° 18' 19'' North , 4° 30' 27'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Roscanvel1,027 (2016)3.3km
Lanvéoc2,282 (2016)3.8km
Crozon8,123 (2016)6.7km
Camaret-sur-Mer2,612 (2016)7.4km
Brest144,899 (2017)9.6km
Mindat Locality ID:
300461
Long-form identifier:
mindat:1:2:300461:9
GUID (UUID V4):
0


Small island formerly linked to the northern Crozon peninsula by a sandy isthmus.

The Île Longue is partly a limestone island as the Île Ronde situated north-east from there (Victor-Eugène Ardouin-Dumazet).

Microgranite quarries were exploited all around the island for cobblestones (18th-19th centuries).

Since 1967, the island has been gradually concreted to become the operational base of the French strategic ocean force.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


1 valid mineral.

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

Entries shown in red are rocks recorded for this region.

Detailed Mineral List:

ⓘ Calcite
Formula: CaCO3

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3

List of minerals for each chemical element

CCarbon
Cⓘ CalciteCaCO3
OOxygen
Oⓘ CalciteCaCO3
CaCalcium
Caⓘ CalciteCaCO3

Other Regions, Features and Areas containing this locality

Eurasian PlateTectonic Plate
EuropeContinent
France

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References

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To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
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