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Surinamite-bearing gneiss locality, Harris, Isle of Lewis and Harris, Outer Hebrides (Na h-Eileanan Siar), Scotland, UK

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Latitude & Longitude (WGS84): 57° 45' 42'' North , 6° 59' 12'' West
Latitude & Longitude (decimal): 57.76178,-6.98671
GeoHash:G#: gf70950qv
Locality type:Outcrop
Köppen climate type:Cfb : Temperate oceanic climate


The surinamite-bearing gneiss is found in a small outcrop about 0.5 km south of Roineabhal summit. This gneiss occurs as a thin layer not exceeding 1 m in thickness within orthopyroxene-bearing quartzofeldspathic gneiss.


Mineral List


8 valid minerals.

Rock Types Recorded

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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

Proterozoic
541 - 2500 Ma



ID: 2028580
Loch Maree Group

Age: Proterozoic (541 - 2500 Ma)

Stratigraphic Name: Lewisian Complex

Lithology: Schist

Reference: British Geological Survey. DiGMapGB-625. British Geological Survey ©NERC. [23]

Precambrian
541 - 4000 Ma



ID: 3193188
Precambrian crystalline metamorphic rocks

Age: Precambrian (541 - 4000 Ma)

Comments: Scourian

Lithology: Amphibolite; orthogneiss

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]

Mesoproterozoic - Paleoproterozoic
1000 - 2500 Ma



ID: 3130645
Proterozoic I gneiss

Age: Proterozoic (1000 - 2500 Ma)

Description: undifferentiated metamorphic

Lithology: Gneiss

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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References

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Baba, S., Grew, E. S., Shearer, C. K., & Sheraton, J. W. (2000). Surinamite: A high-temperature metamorphic beryllosilicate from Lewisian sapphirine-bearing kyanite-orthopyroxene-quartz-potassium feldspar gneiss at South Harris, NW Scotland. American Mineralogist, 85(10), 1474-1484. https://www.researchgate.net/profile/Sotaro_Baba/publication/279641823_Surinamite_A_high-temperature_metamorphic_beryllosilicate_from_Lewisian_sapphirine-bearing_kyanite-orthopyroxene-quartz-potassium_feldspar_gneiss_at_South_Harris_NW_Scotland/links/568d9cb008aeaa1481ae7a49.pdf

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