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Les Collades ravine (Escales reservoir), Casterner de les Olles, Tremp, El Pallars Jussà, Lleida (Lérida), Catalonia, Spain

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Location is approximate, estimate based on other nearby localities.
 
Latitude & Longitude (WGS84): 42° North , 0° East (est.)
Margin of Error:~19km
Locality type:Ravine
Köppen climate type:Cfb : Temperate oceanic climate


Ophite outcrops with hydrothermal alteration. Tourmaline is just in the center of schorl-dravite series. Close to this area in the Canarill ravine, there are some ophitic outcrops which have provided titanite, hematite, microcline, etc. Unfortunately, nowadays it is not allowed to collect minerals in this area because it is included in Sant Gervàs protected natural area.
Epidote in voids of augite gabbro.
Located near Escales reservoir (eastern border) at an altitude of ca. 1500 m.

NOTE: The locality is in a Nature Reserve ("Serra de Sant Gervàs"); picking up rocks is allowed but no digging, heavy equipment etc.

Regions containing this locality

Iberian Peninsula

Peninsula - 1,585 mineral species & varietal names listed

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


13 valid minerals.

Detailed Mineral List:

Actinolite
Formula: ☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Reference: Calvo, M., Calvo, G.,Pocovi, A., Lago, M. and Viñals, J. (2010). Axinite, tourmaline and epidote associated with a dolerite in the Escales reservoir, Tremp, Llleida. Mineral Up, 2, 6-13.; Calvo, M., Calvo, G., Pocovi, A., Lago, M. & Viñals, J. (2011): Epidot und Axinit vom Escales-Stausee, Katalanische Pyrenäen, Nordspanien. Lapis 36 (5), 13-20; 58 (in German).
Axinite-(Fe)
Formula: Ca2Fe2+Al2BSi4O15OH
Reference: Calvo, M., Calvo, G.,Pocovi, A., Lago, M. and Viñals, J. (2010). Axinite, tourmaline and epidote associated with a dolerite in the Escales reservoir, Tremp, Llleida. Mineral Up, 2, 6-13.; Calvo, M., Calvo, G., Pocovi, A., Lago, M. & Viñals, J. (2011): Epidot und Axinit vom Escales-Stausee, Katalanische Pyrenäen, Nordspanien. Lapis 36 (5), 13-20; 58 (in German); Lapis 35 (12) (2010) p. 37.
Chalcopyrite
Formula: CuFeS2
Reference: Calvo, M., Calvo, G.,Pocovi, A., Lago, M. and Viñals, J. (2010). Axinite, tourmaline and epidote associated with a dolerite in the Escales reservoir, Tremp, Llleida. Mineral Up, 2, 6-13.; Calvo, M., Calvo, G., Pocovi, A., Lago, M. & Viñals, J. (2011): Epidot und Axinit vom Escales-Stausee, Katalanische Pyrenäen, Nordspanien. Lapis 36 (5), 13-20; 58 (in German).
'Dravite-Schorl Series'
Reference: Calvo, M., Calvo, G., Pocovi, A., Lago, M. & Viñals, J. (2011): Epidot und Axinit vom Escales-Stausee, Katalanische Pyrenäen, Nordspanien. Lapis 36 (5), 13-20; 58 (in German). ; Joan Rosell
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: Calvo, M., Calvo, G.,Pocovi, A., Lago, M. and Viñals, J. (2010). Axinite, tourmaline and epidote associated with a dolerite in the Escales reservoir, Tremp, Llleida. Mineral Up, 2, 6-13.; Joan Bruguera collection; Lapis 35 (12) (2010) p. 37; Calvo, M., Calvo, G., Pocovi, A., Lago, M. & Viñals, J. (2011): Epidot und Axinit vom Escales-Stausee, Katalanische Pyrenäen, Nordspanien. Lapis 36 (5), 13-20; 58 (in German).
Ferro-actinolite ?
Formula: ☐{Ca2}{Fe2+5}(Si8O22)(OH)2
Reference: Calvo, M., Calvo, G., Pocovi, A., Lago, M. & Viñals, J. (2011): Epidot und Axinit vom Escales-Stausee, Katalanische Pyrenäen, Nordspanien. Lapis 36 (5), 13-20; 58 (in German).
Hematite
Formula: Fe2O3
Reference: Calvo, M., Calvo, G., Pocovi, A., Lago, M. & Viñals, J. (2011): Epidot und Axinit vom Escales-Stausee, Katalanische Pyrenäen, Nordspanien. Lapis 36 (5), 13-20; 58 (in German). ; Joan Rosell
Ilmenite
Formula: Fe2+TiO3
Reference: Calvo, M., Calvo, G., Pocovi, A., Lago, M. & Viñals, J. (2011): Epidot und Axinit vom Escales-Stausee, Katalanische Pyrenäen, Nordspanien. Lapis 36 (5), 13-20; 58 (in German).
'Limonite'
Formula: (Fe,O,OH,H2O)
Reference: Calvo, M., Calvo, G., Pocovi, A., Lago, M. & Viñals, J. (2011): Epidot und Axinit vom Escales-Stausee, Katalanische Pyrenäen, Nordspanien. Lapis 36 (5), 13-20; 58 (in German).
Microcline
Formula: K(AlSi3O8)
Reference: FMF Forum
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: FMF Forum
Muscovite var: Sericite
Formula: KAl2(AlSi3O10)(OH)2
Reference: FMF Forum
Prehnite
Formula: Ca2Al2Si3O10(OH)2
Reference: Calvo, M., Calvo, G., Pocovi, A., Lago, M. & Viñals, J. (2011): Epidot und Axinit vom Escales-Stausee, Katalanische Pyrenäen, Nordspanien. Lapis 36 (5), 13-20; 58 (in German).
Pyrite
Formula: FeS2
Reference: Calvo, M., Calvo, G., Pocovi, A., Lago, M. & Viñals, J. (2011): Epidot und Axinit vom Escales-Stausee, Katalanische Pyrenäen, Nordspanien. Lapis 36 (5), 13-20; 58 (in German).
Quartz
Formula: SiO2
Reference: Forum FMF
Titanite
Formula: CaTi(SiO4)O
Reference: Calvo, M., Calvo, G., Pocovi, A., Lago, M. & Viñals, J. (2011): Epidot und Axinit vom Escales-Stausee, Katalanische Pyrenäen, Nordspanien. Lapis 36 (5), 13-20; 58 (in German).

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
'Chalcopyrite'2.CB.10aCuFeS2
'Pyrite'2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
'Hematite'4.CB.05Fe2O3
'Ilmenite'4.CB.05Fe2+TiO3
'Quartz'4.DA.05SiO2
Group 9 - Silicates
'Actinolite'9.DE.10☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
'Axinite-(Fe)'9.BD.20Ca2Fe2+Al2BSi4O15OH
'Epidote'9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
'Ferro-actinolite' ?9.DE.10☐{Ca2}{Fe2+5}(Si8O22)(OH)2
'Microcline'9.FA.30K(AlSi3O8)
'Muscovite'9.EC.15KAl2(AlSi3O10)(OH)2
var: Sericite9.EC.15KAl2(AlSi3O10)(OH)2
'Prehnite'9.DP.20Ca2Al2Si3O10(OH)2
Titanite9.AG.15CaTi(SiO4)O
Unclassified Minerals, Rocks, etc.
'Dravite-Schorl Series'-
'Limonite'-(Fe,O,OH,H2O)

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
Ilmenite4.3.5.1Fe2+TiO3
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Titanite52.4.3.1CaTi(SiO4)O
Group 56 - SOROSILICATES Si2O7 Groups, With Additional O, OH, F and H2O
Si2O7 Groups and O, OH, F, and H2O with cations in [4] and/or >[4] coordination
Axinite-(Fe)56.2.2.1Ca2Fe2+Al2BSi4O15OH
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 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Group 72 - PHYLLOSILICATES Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings with 4-membered rings
Prehnite72.1.3.1Ca2Al2Si3O10(OH)2
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
Microcline76.1.1.5K(AlSi3O8)
Unclassified Minerals, Rocks, etc.
Actinolite-☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
'Dravite-Schorl Series'-
Ferro-actinolite ?-☐{Ca2}{Fe2+5}(Si8O22)(OH)2
'Limonite'-(Fe,O,OH,H2O)
Muscovite
var: Sericite
-KAl2(AlSi3O10)(OH)2

List of minerals for each chemical element

HHydrogen
H Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
H Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H Ferro-actinolite☐{Ca2}{Fe52+}(Si8O22)(OH)2
H Limonite(Fe,O,OH,H2O)
H MuscoviteKAl2(AlSi3O10)(OH)2
H PrehniteCa2Al2Si3O10(OH)2
H Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
BBoron
B Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH
OOxygen
O Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
O Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O Ferro-actinolite☐{Ca2}{Fe52+}(Si8O22)(OH)2
O HematiteFe2O3
O IlmeniteFe2+TiO3
O Limonite(Fe,O,OH,H2O)
O MicroclineK(AlSi3O8)
O MuscoviteKAl2(AlSi3O10)(OH)2
O PrehniteCa2Al2Si3O10(OH)2
O QuartzSiO2
O Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
O TitaniteCaTi(SiO4)O
MgMagnesium
Mg Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Mg Ferro-actinolite☐{Ca2}{Fe52+}(Si8O22)(OH)2
AlAluminium
Al Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al MicroclineK(AlSi3O8)
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al PrehniteCa2Al2Si3O10(OH)2
Al Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
SiSilicon
Si Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Si Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si Ferro-actinolite☐{Ca2}{Fe52+}(Si8O22)(OH)2
Si MicroclineK(AlSi3O8)
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si PrehniteCa2Al2Si3O10(OH)2
Si QuartzSiO2
Si Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Si TitaniteCaTi(SiO4)O
SSulfur
S ChalcopyriteCuFeS2
S PyriteFeS2
KPotassium
K MicroclineK(AlSi3O8)
K MuscoviteKAl2(AlSi3O10)(OH)2
K Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
CaCalcium
Ca Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Ca Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca Ferro-actinolite☐{Ca2}{Fe52+}(Si8O22)(OH)2
Ca PrehniteCa2Al2Si3O10(OH)2
Ca TitaniteCaTi(SiO4)O
TiTitanium
Ti IlmeniteFe2+TiO3
Ti TitaniteCaTi(SiO4)O
FeIron
Fe Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Fe Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH
Fe ChalcopyriteCuFeS2
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe Ferro-actinolite☐{Ca2}{Fe52+}(Si8O22)(OH)2
Fe HematiteFe2O3
Fe IlmeniteFe2+TiO3
Fe Limonite(Fe,O,OH,H2O)
Fe PyriteFeS2
CuCopper
Cu ChalcopyriteCuFeS2

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Calvo, M., Calvo, G., Pocovi, A., Lago, M., and Viñals, J. (2010) Axinite, tourmaline and epidote associated with a dolerite in the Escales reservoir, Tremp, Lleida. Mineral Up, 2, 6-13 (in English).
Calvo, M., Calvo, G., Pocovi, A., Lago, M., and Viñals, J. (2010) Axinita y Epidota en el Pantano de Les Escales, Tremp, Lleida. Revista de Minerales, 4(4), 6-13 (in Spanish).
Calvo, M., Calvo, G., Pocovi, A., Lago, M., and Viñals, J. (2011) Epidot und Axinit vom Escales-Stausee, Katalanische Pyrenäen, Nordspanien. Lapis, 36(5), 13-20; 58 (in German).
Lapis (2010) 35(12), 37.
Calvo, Miguel (2018) Minerales y Minas de España. Vol. IX. Silicatos. Escuela Técnica Superior de Ingenieros de Minas de Madrid. Fundación Gómez Pardo. 767 pp.

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