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Tag Archives: phyllosilicates
CRISM: Iron-magnesium clays in Libya Montes
This image is located right along the rim of the Isidis impact basin, at the foot of Libya Montes. Here we see the interaction between olivine (red) and iron-magnesium phyllosilicates (green). The group of olivine minerals is known to have … Continue reading
Posted in Reports
Tagged clay minerals, Compact Reconnaissance Imaging Spectrometer for Mars, CRISM, Libya Montes, Mars Reconnaissance Orbiter, MRO, NASA, phyllosilicates
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CRISM: Phyllosilicate minerals at Isidis rim
This image is located right along the rim of the Isidis impact basin, at the foot of Libya Montes. Here we see the stratigraphy (layering) of different iron-magnesium phyllosilicates (white and pink). Phyllosilicates are clay and clay-like minerals formed by … Continue reading
Posted in Reports
Tagged Compact Reconnaissance Imaging Spectrometer for Mars, CRISM, Isidis Planitia, Mars Reconnaissance Orbiter, MRO, NASA, phyllosilicates
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CRISM: Phyllosilicate minerals near Marwth Vallis
This image shows iron/magnesium-bearing hydrated minerals called phyllosilicates in a white/yellow color. Phyllosilicates are clay and clay-like minerals formed by chemical reactions with liquid water. They are very thin (microscopic) stacked layer crystal forms, also called sheet silicates. The CRISM … Continue reading
Posted in Reports
Tagged Compact Reconnaissance Imaging Spectrometer for Mars, CRISM, Mars Reconnaissance Orbiter, Mawrth Vallis, MRO, NASA, phyllosilicates
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CRISM: Phyllosilicates in Nili Fossae
This image shows a site near Nili Fossae, a group of long, narrow tectonic depressions called graben. Mars’ crust is mostly made up of igneous rock and mafic materials, shown here with red denoting olivine. There are also aqueously-altered minerals … Continue reading
Posted in Reports
Tagged Compact Reconnaissance Imaging Spectrometer for Mars, CRISM, Mars Reconnaissance Orbiter, MRO, NASA, Nili Fossae, phyllosilicates
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CRISM: Carbonate and phyllosilicates in Leighton Crater
This image shows alteration products in the central peak of Leighton Crater, a 65-kilometer diameter crater in the Tyrrhena Terra region of the southern highlands. This CRISM image reveals the presence of hydrated iron-magnesium phyllosilicate and carbonate minerals (shown in … Continue reading
Posted in Reports
Tagged carbonate minerals, Compact Reconnaissance Imaging Spectrometer for Mars, CRISM, Leighton Crater, Mars Reconnaissance Orbiter, MRO, NASA, phyllosilicates, Tyrrhena Terra
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CRISM image: phyllosilicates in a Tyrrhena Terra crater rim
This image shows layers clays and clay-like minerals called phyllosilicates that are exposed in Tyrrhena Terra, part of Mars’ ancient, heavily-cratered southern highlands. Tyrrhena Terra is roughly 2,300 kilometers (1,430 miles) across, about the size of Earth’s continent of Antarctica! … Continue reading
Posted in Reports
Tagged Compact Reconnaissance Imaging Spectrometer for Mars, CRISM, Mars Reconnaissance Orbiter, MRO, NASA, phyllosilicates, Tyrrhena Terra, weathering
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Hardened arteries in Nili and Nilo
Water seeping through conduits and cracks in the deep subsurface rocks of Nilosyrtis and Nili Fossae left behind minerals, like hard-water deposits that collect in the plumbing of your house. (Or cholesterol in your arteries.) Then as the softer rocks … Continue reading
Posted in Reports
Tagged clay minerals, cracks, CTX, Curiosity, fractures, Gale Crater, groundwater, gypsum, HiRISE, Mars Exploration Rovers, Mars Reconnaissance Orbiter, MSL, Nili Fossae, Nilosyrtis, Opportunity, phyllosilicates, water
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Changing times in Syrtis Major
Early Mars appears to have been highly unlike today, being warmer and wetter. To find out why and how the environment changed, scientists look for inflection points in Martian history, where one geological regime gives way to another. A report … Continue reading
Posted in Reports
Tagged clay minerals, CRISM, Isidis Planitia, lava, Mars Reconnaissance Orbiter, MRO, olivine, phyllosilicates, Syrtis Major
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Mars mineral bonanza?
If you could go to only one location on Mars, where would you find the most complete assortment of known Martian minerals? A new report, with lead author Patrick Thollot (Laboratoire de Planétologie et Géodynamique, CNRS), in the Journal of … Continue reading
Posted in Reports
Tagged clay minerals, climate change, CRISM, HiRISE, HRSC, hydrated minerals, Noctis Labyrinthus, opal, phyllosilicates, silicates, sulfates, Tharsis
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