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How to get to El Campillo (Andalucía) Hotel El Campillo (Andalucía)

Photos of El Campillo, Andalucía

photos found. 864. Photos on the current page: 15
1 
1
Corta Atalaya
Corta Atalaya
  • Author: Guillermo de Baskerville Follow on flickr foto flickr
  • Date of photography: 2019-07-13 08:59:36
  • Geographical coordinates of the taken: 37°42'3"N - 6°35'54"W
  • Fue una explotación a cielo abierto, que llegó a ser la más grande de Europa. Se extraía principalmente cobre y cesó su explotación en 1994. Su forma elíptica tiene estas dimensiones: largo 1.200 metros, ancho 900 y profundidad 350. Ríotinto. Huelva. Andalucía. Panorámica de 4 fotos en vertical
  • License*: All Rights Reserved - photo in flikr foto flickr
    *The photographs are copyrighted by their respective owners.
Eflorescencias de sulfatos de hierro (posiblemente, halotriquita) por alteración de pirita - Minas de Riotinto (Huelva, España) - 10
Eflorescencias de sulfatos de hierro (posiblemente, halotriquita) por alteración de pirita - Minas de Riotinto (Huelva, España) - 10
  • Author: Banco de Imágenes Geológicas Follow on flickr foto flickr
  • Date of photography: 2019-05-01 12:38:18
  • Geographical coordinates of the taken: 37°42'24"N - 6°37'31"W
  • Iron-sulfate (possibly, halotrichite) efflorescences on pyrite-bearing mine wastes, Riotinto Mines (Iberian Pyrite Belt, Riotinto Mining Basin, Huelva, Spain)
  • License*: Attribution License - photo in flikr foto flickr
    *The photographs are copyrighted by their respective owners.
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Hotel El Campillo
Eflorescencias de sulfatos de hierro (posiblemente, halotriquita) por alteración de pirita - Minas de Riotinto (Huelva, España) - 09
Eflorescencias de sulfatos de hierro (posiblemente, halotriquita) por alteración de pirita - Minas de Riotinto (Huelva, España) - 09
  • Author: Banco de Imágenes Geológicas Follow on flickr foto flickr
  • Date of photography: 2019-05-01 12:38:04
  • Geographical coordinates of the taken: 37°42'24"N - 6°37'31"W
  • Iron-sulfate (possibly, halotrichite) efflorescences on pyrite-bearing mine wastes, Riotinto Mines (Iberian Pyrite Belt, Riotinto Mining Basin, Huelva, Spain)
  • License*: Attribution License - photo in flikr foto flickr
    *The photographs are copyrighted by their respective owners.
Eflorescencias de sulfatos de hierro (posiblemente, halotriquita) por alteración de pirita - Minas de Riotinto (Huelva, España) - 08
Eflorescencias de sulfatos de hierro (posiblemente, halotriquita) por alteración de pirita - Minas de Riotinto (Huelva, España) - 08
  • Author: Banco de Imágenes Geológicas Follow on flickr foto flickr
  • Date of photography: 2019-05-01 12:25:50
  • Geographical coordinates of the taken: 37°42'23"N - 6°37'31"W
  • Iron-sulfate (possibly, halotrichite) efflorescences on pyrite-bearing mine wastes, Riotinto Mines (Iberian Pyrite Belt, Riotinto Mining Basin, Huelva, Spain)
  • License*: Attribution License - photo in flikr foto flickr
    *The photographs are copyrighted by their respective owners.
Eflorescencias de sulfatos de hierro (posiblemente, halotriquita) por alteración de pirita - Minas de Riotinto (Huelva, España) - 07
Eflorescencias de sulfatos de hierro (posiblemente, halotriquita) por alteración de pirita - Minas de Riotinto (Huelva, España) - 07
  • Author: Banco de Imágenes Geológicas Follow on flickr foto flickr
  • Date of photography: 2019-05-01 12:25:50
  • Geographical coordinates of the taken: 37°42'23"N - 6°37'31"W
  • Iron-sulfate (possibly, halotrichite) efflorescences on pyrite-bearing mine wastes, Riotinto Mines (Iberian Pyrite Belt, Riotinto Mining Basin, Huelva, Spain)
  • License*: Attribution License - photo in flikr foto flickr
    *The photographs are copyrighted by their respective owners.
Gours estromatolíticos formados en lixiviados ácidos de drenaje de derrubios mineros - Río Tintillo (Faja Pirítica Ibérica, El Campillo, Huelva, España) - 08
Gours estromatolíticos formados en lixiviados ácidos de drenaje de derrubios mineros - Río Tintillo (Faja Pirítica Ibérica, El Campillo, Huelva, España) - 08
  • Author: Banco de Imágenes Geológicas Follow on flickr foto flickr
  • Date of photography: 2020-05-01 14:25:24
  • Geographical coordinates of the taken: 37°42'55"N - 6°38'5"W
  • Terraced iron-sulphate-stromatolites formed by acid leachates from pyrite-bearing mine wastes, Tintillo river (Iberian Pyrite Belt, Riotinto Mining Basin, Huelva, Spain) Terraced iron formations of millimetric to metric scale are usually developed during the oxidation and hydrolysis/precipitation of dissolved iron in the acidic solutions after they emerge from waste piles, tailings, or mine portals, and they display a morphological pattern similar to that observed in travertines formed in Ca2+-HCO3 ––rich spring waters. TIFs differ from calcareous travertines, however, in their mineralogical composition, which is characterized by hydrous iron (oxy)hydroxides and/or hydroxysulfates, in agreement with the typical Fe(II)/Fe(III)-SO4 2– chemical composition of most acid mine drainage solutions. These spectacular formations are the result of the interaction between (1) highly acidic and Fe(II)-enriched waters, (2) atmospheric oxygen, and (3) acidophilic microbes that have found perfect habitats for their Fe-oxidizing metabolisms in these extreme environments. The abiotic processes could be more important than the biotic factors in winter (higher flow, lower temperature), and conversely, the bacterial activity could play a major role in summer (lower flow, higher temperature). The water from the Tintillo river (and other rivers and creeks from Riotinto Mining Basin, Huelva, Spain) has a nearly unique red and orange colour derived from its extremely acidic chemical makeup, with very high levels of iron and heavy metals. There are a number of subsurface sulfide (mainly pyrite) bodies responsible for this acidity. These mineral bodies belong to the Iberian Pyrite Belt, formed 350 My ago in the Devonian Period, connected to active and hydrothermal volcanism that led to the formation of a volcanic-sedimentary complex. Volcanic activity in the region led to eight giant volcanogenic massive sulfide ore deposits associated with polymetallic massive flanks of volcanic cones in the form of pyrite, but also chalcopyrite, sphalerite, galena and cassiterite. References: Iron terraces in acid mine drainage systems: A discussion about the organic and inorganic factors involved in their formation through observations from the Tintillo acidic river (Riotinto mine, Huelva, Spain) pubs.geoscienceworld.org/gsa/geosphere/article-pdf/3/3/13... The Tintillo acidic river (Rio Tinto mines, Huelva, Spain): an example of extreme environmental impact of pyritic mine wastes on the environment or an exceptional site to study acid-sulphate mine drainage systems? www.researchgate.net/publication/235355068_The_Tintillo_a...
  • License*: Attribution License - photo in flikr foto flickr
    *The photographs are copyrighted by their respective owners.
Gours estromatolíticos formados en lixiviados ácidos de drenaje de derrubios mineros - Río Tintillo (Faja Pirítica Ibérica, El Campillo, Huelva, España) - 07
Gours estromatolíticos formados en lixiviados ácidos de drenaje de derrubios mineros - Río Tintillo (Faja Pirítica Ibérica, El Campillo, Huelva, España) - 07
  • Author: Banco de Imágenes Geológicas Follow on flickr foto flickr
  • Date of photography: 2020-05-01 14:33:00
  • Geographical coordinates of the taken: 37°42'56"N - 6°38'7"W
  • Terraced iron-sulphate-stromatolites formed by acid leachates from pyrite-bearing mine wastes, Tintillo river (Iberian Pyrite Belt, Riotinto Mining Basin, Huelva, Spain) Terraced iron formations of millimetric to metric scale are usually developed during the oxidation and hydrolysis/precipitation of dissolved iron in the acidic solutions after they emerge from waste piles, tailings, or mine portals, and they display a morphological pattern similar to that observed in travertines formed in Ca2+-HCO3 ––rich spring waters. TIFs differ from calcareous travertines, however, in their mineralogical composition, which is characterized by hydrous iron (oxy)hydroxides and/or hydroxysulfates, in agreement with the typical Fe(II)/Fe(III)-SO4 2– chemical composition of most acid mine drainage solutions. These spectacular formations are the result of the interaction between (1) highly acidic and Fe(II)-enriched waters, (2) atmospheric oxygen, and (3) acidophilic microbes that have found perfect habitats for their Fe-oxidizing metabolisms in these extreme environments. The abiotic processes could be more important than the biotic factors in winter (higher flow, lower temperature), and conversely, the bacterial activity could play a major role in summer (lower flow, higher temperature). The water from the Tintillo river (and other rivers and creeks from Riotinto Mining Basin, Huelva, Spain) has a nearly unique red and orange colour derived from its extremely acidic chemical makeup, with very high levels of iron and heavy metals. There are a number of subsurface sulfide (mainly pyrite) bodies responsible for this acidity. These mineral bodies belong to the Iberian Pyrite Belt, formed 350 My ago in the Devonian Period, connected to active and hydrothermal volcanism that led to the formation of a volcanic-sedimentary complex. Volcanic activity in the region led to eight giant volcanogenic massive sulfide ore deposits associated with polymetallic massive flanks of volcanic cones in the form of pyrite, but also chalcopyrite, sphalerite, galena and cassiterite. References: Iron terraces in acid mine drainage systems: A discussion about the organic and inorganic factors involved in their formation through observations from the Tintillo acidic river (Riotinto mine, Huelva, Spain) pubs.geoscienceworld.org/gsa/geosphere/article-pdf/3/3/13... The Tintillo acidic river (Rio Tinto mines, Huelva, Spain): an example of extreme environmental impact of pyritic mine wastes on the environment or an exceptional site to study acid-sulphate mine drainage systems? www.researchgate.net/publication/235355068_The_Tintillo_a...
  • License*: Attribution License - photo in flikr foto flickr
    *The photographs are copyrighted by their respective owners.
Eflorescencias de sulfatos de hierro (posiblemente, halotriquita) por alteración de pirita - Minas de Riotinto (Huelva, España) - 07
Eflorescencias de sulfatos de hierro (posiblemente, halotriquita) por alteración de pirita - Minas de Riotinto (Huelva, España) - 07
  • Author: Banco de Imágenes Geológicas Follow on flickr foto flickr
  • Date of photography: 2019-04-27 13:53:54
  • Geographical coordinates of the taken: 37°42'23"N - 6°37'31"W
  • Iron-sulfate (possibly, halotrichite) efflorescences on pyrite-bearing mine wastes, Riotinto Mines (Iberian Pyrite Belt, Riotinto Mining Basin, Huelva, Spain)
  • License*: Attribution License - photo in flikr foto flickr
    *The photographs are copyrighted by their respective owners.
Gours estromatolíticos de schwermannita-jarosita-goethita formados en lixiviados ácidos de drenaje de derrubios mineros - Río Tintillo (Faja Pirítica Ibérica, El Campillo, Huelva, España) - 06
Gours estromatolíticos de schwermannita-jarosita-goethita formados en lixiviados ácidos de drenaje de derrubios mineros - Río Tintillo (Faja Pirítica Ibérica, El Campillo, Huelva, España) - 06
  • Author: Banco de Imágenes Geológicas Follow on flickr foto flickr
  • Date of photography: 2019-04-27 15:55:37
  • Geographical coordinates of the taken: 37°42'55"N - 6°38'13"W
  • Terraced iron-sulphate-stromatolites formed by acid leachates from pyrite-bearing mine wastes, Tintillo river (Iberian Pyrite Belt, Riotinto Mining Basin, Huelva, Spain) Terraced iron formations of millimetric to metric scale are usually developed during the oxidation and hydrolysis/precipitation of dissolved iron in the acidic solutions after they emerge from waste piles, tailings, or mine portals, and they display a morphological pattern similar to that observed in travertines formed in Ca2+-HCO3 ––rich spring waters. TIFs differ from calcareous travertines, however, in their mineralogical composition, which is characterized by hydrous iron (oxy)hydroxides and/or hydroxysulfates, in agreement with the typical Fe(II)/Fe(III)-SO4 2– chemical composition of most acid mine drainage solutions. These spectacular formations are the result of the interaction between (1) highly acidic and Fe(II)-enriched waters, (2) atmospheric oxygen, and (3) acidophilic microbes that have found perfect habitats for their Fe-oxidizing metabolisms in these extreme environments. The abiotic processes could be more important than the biotic factors in winter (higher flow, lower temperature), and conversely, the bacterial activity could play a major role in summer (lower flow, higher temperature). The water from the Tintillo river (and other rivers and creeks from Riotinto Mining Basin, Huelva, Spain) has a nearly unique red and orange colour derived from its extremely acidic chemical makeup, with very high levels of iron and heavy metals. There are a number of subsurface sulfide (mainly pyrite) bodies responsible for this acidity. These mineral bodies belong to the Iberian Pyrite Belt, formed 350 My ago in the Devonian Period, connected to active and hydrothermal volcanism that led to the formation of a volcanic-sedimentary complex. Volcanic activity in the region led to eight giant volcanogenic massive sulfide ore deposits associated with polymetallic massive flanks of volcanic cones in the form of pyrite, but also chalcopyrite, sphalerite, galena and cassiterite. References: Iron terraces in acid mine drainage systems: A discussion about the organic and inorganic factors involved in their formation through observations from the Tintillo acidic river (Riotinto mine, Huelva, Spain) pubs.geoscienceworld.org/gsa/geosphere/article-pdf/3/3/13... The Tintillo acidic river (Rio Tinto mines, Huelva, Spain): an example of extreme environmental impact of pyritic mine wastes on the environment or an exceptional site to study acid-sulphate mine drainage systems? www.researchgate.net/publication/235355068_The_Tintillo_a...
  • License*: Attribution License - photo in flikr foto flickr
    *The photographs are copyrighted by their respective owners.
Gours estromatolíticos de schwermannita-jarosita-goethita formados en lixiviados ácidos de drenaje de derrubios mineros - Río Tintillo (Faja Pirítica Ibérica, El Campillo, Huelva, España) - 05
Gours estromatolíticos de schwermannita-jarosita-goethita formados en lixiviados ácidos de drenaje de derrubios mineros - Río Tintillo (Faja Pirítica Ibérica, El Campillo, Huelva, España) - 05
  • Author: Banco de Imágenes Geológicas Follow on flickr foto flickr
  • Date of photography: 2019-04-27 14:39:56
  • Geographical coordinates of the taken: 37°42'54"N - 6°38'6"W
  • Terraced iron-sulphate-stromatolites formed by acid leachates from pyrite-bearing mine wastes, Tintillo river (Iberian Pyrite Belt, Riotinto Mining Basin, Huelva, Spain) Terraced iron formations of millimetric to metric scale are usually developed during the oxidation and hydrolysis/precipitation of dissolved iron in the acidic solutions after they emerge from waste piles, tailings, or mine portals, and they display a morphological pattern similar to that observed in travertines formed in Ca2+-HCO3 ––rich spring waters. TIFs differ from calcareous travertines, however, in their mineralogical composition, which is characterized by hydrous iron (oxy)hydroxides and/or hydroxysulfates, in agreement with the typical Fe(II)/Fe(III)-SO4 2– chemical composition of most acid mine drainage solutions. These spectacular formations are the result of the interaction between (1) highly acidic and Fe(II)-enriched waters, (2) atmospheric oxygen, and (3) acidophilic microbes that have found perfect habitats for their Fe-oxidizing metabolisms in these extreme environments. The abiotic processes could be more important than the biotic factors in winter (higher flow, lower temperature), and conversely, the bacterial activity could play a major role in summer (lower flow, higher temperature). The water from the Tintillo river (and other rivers and creeks from Riotinto Mining Basin, Huelva, Spain) has a nearly unique red and orange colour derived from its extremely acidic chemical makeup, with very high levels of iron and heavy metals. There are a number of subsurface sulfide (mainly pyrite) bodies responsible for this acidity. These mineral bodies belong to the Iberian Pyrite Belt, formed 350 My ago in the Devonian Period, connected to active and hydrothermal volcanism that led to the formation of a volcanic-sedimentary complex. Volcanic activity in the region led to eight giant volcanogenic massive sulfide ore deposits associated with polymetallic massive flanks of volcanic cones in the form of pyrite, but also chalcopyrite, sphalerite, galena and cassiterite. References: Iron terraces in acid mine drainage systems: A discussion about the organic and inorganic factors involved in their formation through observations from the Tintillo acidic river (Riotinto mine, Huelva, Spain) pubs.geoscienceworld.org/gsa/geosphere/article-pdf/3/3/13... The Tintillo acidic river (Rio Tinto mines, Huelva, Spain): an example of extreme environmental impact of pyritic mine wastes on the environment or an exceptional site to study acid-sulphate mine drainage systems? www.researchgate.net/publication/235355068_The_Tintillo_a...
  • License*: Attribution License - photo in flikr foto flickr
    *The photographs are copyrighted by their respective owners.
Gours estromatolíticos de schwermannita-jarosita-goethita formados en lixiviados ácidos de drenaje de derrubios mineros - Río Tintillo (Faja Pirítica Ibérica, El Campillo, Huelva, España) - 03
Gours estromatolíticos de schwermannita-jarosita-goethita formados en lixiviados ácidos de drenaje de derrubios mineros - Río Tintillo (Faja Pirítica Ibérica, El Campillo, Huelva, España) - 03
  • Author: Banco de Imágenes Geológicas Follow on flickr foto flickr
  • Date of photography: 2019-04-27 14:36:18
  • Geographical coordinates of the taken: 37°42'54"N - 6°38'2"W
  • Terraced iron-sulphate-stromatolites formed by acid leachates from pyrite-bearing mine wastes, Tintillo river (Iberian Pyrite Belt, Riotinto Mining Basin, Huelva, Spain) Terraced iron formations of millimetric to metric scale are usually developed during the oxidation and hydrolysis/precipitation of dissolved iron in the acidic solutions after they emerge from waste piles, tailings, or mine portals, and they display a morphological pattern similar to that observed in travertines formed in Ca2+-HCO3 ––rich spring waters. TIFs differ from calcareous travertines, however, in their mineralogical composition, which is characterized by hydrous iron (oxy)hydroxides and/or hydroxysulfates, in agreement with the typical Fe(II)/Fe(III)-SO4 2– chemical composition of most acid mine drainage solutions. These spectacular formations are the result of the interaction between (1) highly acidic and Fe(II)-enriched waters, (2) atmospheric oxygen, and (3) acidophilic microbes that have found perfect habitats for their Fe-oxidizing metabolisms in these extreme environments. The abiotic processes could be more important than the biotic factors in winter (higher flow, lower temperature), and conversely, the bacterial activity could play a major role in summer (lower flow, higher temperature). The water from the Tintillo river (and other rivers and creeks from Riotinto Mining Basin, Huelva, Spain) has a nearly unique red and orange colour derived from its extremely acidic chemical makeup, with very high levels of iron and heavy metals. There are a number of subsurface sulfide (mainly pyrite) bodies responsible for this acidity. These mineral bodies belong to the Iberian Pyrite Belt, formed 350 My ago in the Devonian Period, connected to active and hydrothermal volcanism that led to the formation of a volcanic-sedimentary complex. Volcanic activity in the region led to eight giant volcanogenic massive sulfide ore deposits associated with polymetallic massive flanks of volcanic cones in the form of pyrite, but also chalcopyrite, sphalerite, galena and cassiterite. References: Iron terraces in acid mine drainage systems: A discussion about the organic and inorganic factors involved in their formation through observations from the Tintillo acidic river (Riotinto mine, Huelva, Spain) pubs.geoscienceworld.org/gsa/geosphere/article-pdf/3/3/13... The Tintillo acidic river (Rio Tinto mines, Huelva, Spain): an example of extreme environmental impact of pyritic mine wastes on the environment or an exceptional site to study acid-sulphate mine drainage systems? www.researchgate.net/publication/235355068_The_Tintillo_a...
  • License*: Attribution License - photo in flikr foto flickr
    *The photographs are copyrighted by their respective owners.
Gours estromatolíticos de schwermannita-jarosita-goethita formados en lixiviados ácidos de drenaje de derrubios mineros - Río Tintillo (Faja Pirítica Ibérica, El Campillo, Huelva, España) - 04
Gours estromatolíticos de schwermannita-jarosita-goethita formados en lixiviados ácidos de drenaje de derrubios mineros - Río Tintillo (Faja Pirítica Ibérica, El Campillo, Huelva, España) - 04
  • Author: Banco de Imágenes Geológicas Follow on flickr foto flickr
  • Date of photography: 2019-04-27 14:38:17
  • Geographical coordinates of the taken: 37°42'54"N - 6°38'4"W
  • Terraced iron-sulphate-stromatolites formed by acid leachates from pyrite-bearing mine wastes, Tintillo river (Iberian Pyrite Belt, Riotinto Mining Basin, Huelva, Spain) Terraced iron formations of millimetric to metric scale are usually developed during the oxidation and hydrolysis/precipitation of dissolved iron in the acidic solutions after they emerge from waste piles, tailings, or mine portals, and they display a morphological pattern similar to that observed in travertines formed in Ca2+-HCO3 ––rich spring waters. TIFs differ from calcareous travertines, however, in their mineralogical composition, which is characterized by hydrous iron (oxy)hydroxides and/or hydroxysulfates, in agreement with the typical Fe(II)/Fe(III)-SO4 2– chemical composition of most acid mine drainage solutions. These spectacular formations are the result of the interaction between (1) highly acidic and Fe(II)-enriched waters, (2) atmospheric oxygen, and (3) acidophilic microbes that have found perfect habitats for their Fe-oxidizing metabolisms in these extreme environments. The abiotic processes could be more important than the biotic factors in winter (higher flow, lower temperature), and conversely, the bacterial activity could play a major role in summer (lower flow, higher temperature). The water from the Tintillo river (and other rivers and creeks from Riotinto Mining Basin, Huelva, Spain) has a nearly unique red and orange colour derived from its extremely acidic chemical makeup, with very high levels of iron and heavy metals. There are a number of subsurface sulfide (mainly pyrite) bodies responsible for this acidity. These mineral bodies belong to the Iberian Pyrite Belt, formed 350 My ago in the Devonian Period, connected to active and hydrothermal volcanism that led to the formation of a volcanic-sedimentary complex. Volcanic activity in the region led to eight giant volcanogenic massive sulfide ore deposits associated with polymetallic massive flanks of volcanic cones in the form of pyrite, but also chalcopyrite, sphalerite, galena and cassiterite. References: Iron terraces in acid mine drainage systems: A discussion about the organic and inorganic factors involved in their formation through observations from the Tintillo acidic river (Riotinto mine, Huelva, Spain) pubs.geoscienceworld.org/gsa/geosphere/article-pdf/3/3/13... The Tintillo acidic river (Rio Tinto mines, Huelva, Spain): an example of extreme environmental impact of pyritic mine wastes on the environment or an exceptional site to study acid-sulphate mine drainage systems? www.researchgate.net/publication/235355068_The_Tintillo_a...
  • License*: Attribution License - photo in flikr foto flickr
    *The photographs are copyrighted by their respective owners.
Gours estromatolíticos de schwermannita-jarosita-goethita formados en lixiviados ácidos de drenaje de derrubios mineros - Río Tintillo (Faja Pirítica Ibérica, El Campillo, Huelva, España) - 02
Gours estromatolíticos de schwermannita-jarosita-goethita formados en lixiviados ácidos de drenaje de derrubios mineros - Río Tintillo (Faja Pirítica Ibérica, El Campillo, Huelva, España) - 02
  • Author: Banco de Imágenes Geológicas Follow on flickr foto flickr
  • Date of photography: 2019-04-27 14:49:10
  • Geographical coordinates of the taken: 37°42'55"N - 6°38'8"W
  • License*: Attribution License - photo in flikr foto flickr
    *The photographs are copyrighted by their respective owners.
Gours estromatolíticos de schwermannita-jarosita-goethita formados en lixiviados ácidos de drenaje de derrubios mineros - Río Tintillo (Faja Pirítica Ibérica, El Campillo, Huelva, España) - 01
Gours estromatolíticos de schwermannita-jarosita-goethita formados en lixiviados ácidos de drenaje de derrubios mineros - Río Tintillo (Faja Pirítica Ibérica, El Campillo, Huelva, España) - 01
  • Author: Banco de Imágenes Geológicas Follow on flickr foto flickr
  • Date of photography: 2019-04-27 15:46:56
  • Geographical coordinates of the taken: 37°42'56"N - 6°38'9"W
  • Terraced iron-sulphate-stromatolites formed by acid leachates from pyrite-bearing mine wastes, Tintillo river (Iberian Pyrite Belt, Riotinto Mining Basin, Huelva, Spain) Terraced iron formations of millimetric to metric scale are usually developed during the oxidation and hydrolysis/precipitation of dissolved iron in the acidic solutions after they emerge from waste piles, tailings, or mine portals, and they display a morphological pattern similar to that observed in travertines formed in Ca2+-HCO3 ––rich spring waters. TIFs differ from calcareous travertines, however, in their mineralogical composition, which is characterized by hydrous iron (oxy)hydroxides and/or hydroxysulfates, in agreement with the typical Fe(II)/Fe(III)-SO4 2– chemical composition of most acid mine drainage solutions. These spectacular formations are the result of the interaction between (1) highly acidic and Fe(II)-enriched waters, (2) atmospheric oxygen, and (3) acidophilic microbes that have found perfect habitats for their Fe-oxidizing metabolisms in these extreme environments. The abiotic processes could be more important than the biotic factors in winter (higher flow, lower temperature), and conversely, the bacterial activity could play a major role in summer (lower flow, higher temperature). The water from the Tintillo river (and other rivers and creeks from Riotinto Mining Basin, Huelva, Spain) has a nearly unique red and orange colour derived from its extremely acidic chemical makeup, with very high levels of iron and heavy metals. There are a number of subsurface sulfide (mainly pyrite) bodies responsible for this acidity. These mineral bodies belong to the Iberian Pyrite Belt, formed 350 My ago in the Devonian Period, connected to active and hydrothermal volcanism that led to the formation of a volcanic-sedimentary complex. Volcanic activity in the region led to eight giant volcanogenic massive sulfide ore deposits associated with polymetallic massive flanks of volcanic cones in the form of pyrite, but also chalcopyrite, sphalerite, galena and cassiterite. References: Iron terraces in acid mine drainage systems: A discussion about the organic and inorganic factors involved in their formation through observations from the Tintillo acidic river (Riotinto mine, Huelva, Spain) pubs.geoscienceworld.org/gsa/geosphere/article-pdf/3/3/13... The Tintillo acidic river (Rio Tinto mines, Huelva, Spain): an example of extreme environmental impact of pyritic mine wastes on the environment or an exceptional site to study acid-sulphate mine drainage systems? www.researchgate.net/publication/235355068_The_Tintillo_a...
  • License*: Attribution License - photo in flikr foto flickr
    *The photographs are copyrighted by their respective owners.
EH-102 EA7HMK 09-09-2018 (2)
EH-102 EA7HMK 09-09-2018 (2)
  • Author: DIPLOMA ERMITAS DE ESPAÑA Follow on flickr foto flickr
  • Date of photography: 2018-09-09 09:16:50
  • Geographical coordinates of the taken: 37°40'39"N - 6°38'47"W
  • License*: All Rights Reserved - photo in flikr foto flickr
    *The photographs are copyrighted by their respective owners.
photos found. 864. Photos on the current page: 15
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