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Terrestrial analogues to the Martian hematite deposits with special focus on the Utah occurrences Centro de Astrobiología, Madrid, 29 September 2003 Hematite.

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Presentation on theme: "Terrestrial analogues to the Martian hematite deposits with special focus on the Utah occurrences Centro de Astrobiología, Madrid, 29 September 2003 Hematite."— Presentation transcript:

1 Terrestrial analogues to the Martian hematite deposits with special focus on the Utah occurrences Centro de Astrobiología, Madrid, 29 September 2003 Hematite occurrences associated with hydrothermal mineralization in different geotectonic settings Jesús Martínez-Frías

2 Ancient Egyptians weared hematite rings on the thumb due to the position of the lower Mars mount. “Hematite helps maintain balance between body, mind, and spirit”. The Ankh is the egyptian symbol of life Hematite Ankh pendant

3 Martian hydrothermal/groundwater systems would provide a suitable environment either for a martian origin of life or for its continued existence. Direct precipitation from standing, oxygenated, Fe-rich water Precipitation from Fe-rich hydrothermal fluids Low-temperature dissolution and precipitation through mobile groundwater leaching Surface weathering and coatings Thermal oxidation of magnetite-rich lavas Christensen et al. (2001)

4 x50 Iron oxide (hematite) Terra Meridiani Iron oxide (magnetite) Nakhla meteorite Rull, F., Martínez-Frias, J. & Edwards, H.G.M. (2001) Mineralogy and Spectroscopy 4th European Conference, Paris Christensen et al. (2000) JGR 105 (E4) Fig

5 Hematite Rose is a circular arrangement of bladed crystals giving the appearance of the flower of a rose. Tiger Iron is a deposit of approximately 2.2 billion years old that consists of alternating layers of silver gray hematite and red jasper, chert or even tiger eye quartz. Kidney Ore is the massive botryoidal form and gives the appearance of lumpy kidney-like masses. Oolitic Hematite is a formation that has a reddish brown color and an earthy luster and is composed of small rounded grains. Specularite is a micaceous or flaky stone that is sparkling silver gray and sometimes used as an ornamental stone. Analyses of hematite 12 Fe 2 O FeO Mn 2 O MnO Analyses of hematite

6 Magnetite Fe 3 O 4 Hematite, Fe 2 O 3 Bixbyite, (Mn, Fe) 2 O 3 Goethite, FeO(OH) Ferrihydrite Fe 5 O 7 OH · H 2 O Limonite

7 Planetary Geology Laboratory Research Lines CRYOMAGMATISM METEORITIC I MPACTS CRATERS/EVENTS GEOLOGICAL MODELS (HYDROTHERMAL SYSTEMS/ SUBMARINE VENTS) IDPs/ASTEROIDAL METEORITES PRISTINE MATERIAL PLANETARY METEORITES MARS METEORITES RADIATION ATMOSPHERES CLIMATE/ICE FORMATION

8 Martínez-Frías, J. (1992) "The Hiendelaencina Mining District" Mineralium Deposita, 27:

9 Bustillo, M.A, Garcia-Guinea, J. Martinez-Frias, J. y Delgado (1999) “Unusual sedimentary geodes filled by gold-bearing hematite laths” Geol. Magazine, 136-6:

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12 Las Herrerías, Almería Martínez-Frías, J., García Guinea, J., López Ruiz, J. & Reynolds, G.A. (1992) "Discovery of fossil fumaroles in Spain" Economic Geology, 87,

13 Martínez-Frías, J. (1998) "An Ancient Ba-Sb-Ag-Fe-Hg- bearing hydrothermal system in SE Spain" Episodes, 21-4,

14 Tenerife, Canary Islands Rodríguez-Losada, J.A., Martinez-Frias, J., Bustillo, M.A. Delgado, A., Hernandez-Pacheco, A. y De la Fuente Krauss, J.V. (2000) “The Taganana dyke intrusion. Two cases study: the hydrothermalized ankaramite basalts of Punta Poyata and the mineralized alkaline outcrops of Benijo (Tenerife, Canary Islands”. J. Volc. Geoth. Res. 103 (1-4):

15 Bustillo, M. A. & Martínez-Frías J. (2003) Green opals in hydrothermalized basalts (Tenerife Island, Spain): alteration and ageing of silica pseudoglass. Journal of Non- Crystalline Solids 323:

16 Diaz-del-Rio, V., Somoza L., Martinez-Frias J., Hernandez-Molina F.J, Lunar, R., Fernandez-Puga M.C., Maestro A., Terrinha P., Llave E., Garcia A., Garcia A. C. and J.T Vazquez (2003) Vast fields of hydrocarbon-derived carbonate chimneys related to the accretionary wedge/olistostrome of the Gulf of Cadiz Marine Geology 159:

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18 Morphological types of vent structures in the Gulf of Cadiz 76 samples

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20 Example of a “living bacteria” in a mussel gill, Gulf of Mexico Mineralized bacteria-related? framboids in the submarine chimneys (Gulf of Cadiz)

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22 Deception Island Rey, J., Somoza, L. & Martínez-Frías, J. (1995) "Neotectonic, volcanic and hydrothermal processes related to the geodynamic framework in the Western Brandsfield Rift, Deception island (Antarctica)" Geo-Marine Letters, 15: 1-8. Fe-Mn

23 Sampling of terrestrial and submarine selected areas HYDRODEC

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26 Terrestrial analogues to the Martian hematite deposits with special focus on the Utah occurrences Centro de Astrobiología, CSIC-INTA Associated to NASA Astrobiology Institute, Madrid (Spain) 29 September 2003


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