HiRISE | Possible Phyllosilicate Near Margaritifer Chaos (ESP_028288

NASA/JPL/University of Arizona

Possible Phyllosilicate Near Margaritifer Chaos
ESP_028288_1720 Science Theme: Composition and Photometry

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According to CRISM multispectral data, the exposures of light-toned materials (on small hills and between darker dunes) shows a strong iron-magnesium phyllosilicate signatures in this area. Phyllosilicates, or sheet silicates, are an important group of minerals that includes the micas, chlorite, serpentine, talc, and the clay minerals.

The existence of clay minerals is especially interesting on Mars since we want to know under what conditions these minerals formed. Could it have been the presence of water?

This image is a new one for HiRISE, since we have no previous observations of this area. With our camera's resolution and data from CRISM, we might be able to determine if these particular phyllosilicates are actually present here.

Written by: HiRISE Science Team (audio by Tre Gibbs) (14 November 2012)

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Acquisition date:	08 August 2012	Local Mars time:	3:32 PM
Latitude (centered):	-7.899 degrees	Longitude (East):	343.152 degrees
Range to target site:	265.6 km (166.0 miles)	Original image scale range:	from 26.6 cm/pixel (with 1 x 1 binning) to 53.1 cm/pixel (with 2 x 2 binning)
Map projected scale:	25 cm/pixel and North is up	Map projection:	EQUIRECTANGULAR
Emission angle:	1.2 degrees	Phase angle:	57.4 degrees
Solar incidence angle:	56 degrees, with the Sun about 34 degrees above the horizon	Solar longitude:	152.0 degrees, Northern Summer
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North azimuth:	97 degrees	Sub-solar azimuth:	24.8 degrees
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North azimuth:	270 degrees	Sub solar azimuth:	199.4 degrees

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For information about NASA and agency programs on the Web, visit: http://www.nasa.gov. NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, Calif., manages the Mars Reconnaissance Orbiter for NASA's Science Mission Directorate, Washington. Lockheed Martin Space Systems is the prime contractor for the project and built the spacecraft. The HiRISE camera was built by Ball Aerospace and Technology Corporation and is operated by the University of Arizona. The image data were processed using the U.S. Geological Survey’s ISIS3 software.