3 WE PROPOSE TO CHARACTERIZE SEVERAL FORMS OF NANOPHASE AND AMORPHOUS MATERIALS FOR GROUND TRUTHING DETECTIONS OF THESE PHASES FROM ORBITAL AND LANDED MISSIONS ON MARS. AN X-RAY AMORPHOUS PHASE HAS BEEN IDENTIFIED AT THE ROCKNEST SITE IN GALE CRATER BY THE MSL (MARS SCIENCE LAB) ROVER (BISH ET AL., 2013 BLAKE ET AL., 2013) AND THE NANOPHASE IRON HYDROXIDE MINERAL AKAGAN ITE HAS BEEN IDENTIFIED IN SEDIMENTARY ROCKS AT YELLOWKNIFE BAY, GALE CRATER (MING ET AL. 2014). MODELING OF TES DATA OF BRIGHT OUTCROPS ON MARS ARE CONSISTENT WITH ~25 % ABUNDANCE OF ALLOPHANE-TYPE MATERIALS (RAMPE ET AL., 2012) AND JOINT CRISM-TES ANALYSES OF THE MAWRTH VALLIS REGION INDICATE THAT ALLOPHANE, IMOGOLITE AND HYDRATED SILICA ARE ABUNDANT PHASES IN THE CLAY-RICH OUTCROPS (BISHOP AND RAMPE, 2014). FURTHER, M SSBAUER ANALYSES AT GUSEV AND MERIDIANI IDENTIFIED A NANOPHASE FE OXIDE/HYDROXIDE/OXYHYDROXIDE PHASE IN THE SURFACE UNIT (MORRIS ET AL., 2006A,B). THUS, COORDINATED TIR-VNIR-XRD-M SSBAUER ANALYSES OF NANOPHASE AND AMORPHOUS MATERIALS ARE NEEDED TO NAIL DOWN THE IDENTITIES OF THESE PHASES IDENTIFIED ACROSS MARS BY MULTIPLE INSTRUMENTS. CANDIDATE NANOPHASE MATERIALS FOR THIS PROJECT ENCOMPASS A RANGE OF ALUMINOSILICATE, IRON OXIDE/HYDROXIDE (AND SULFATE)-BEARING MATERIALS INCLUDING ALLOPHANE, IMOGOLITE, SILICA GEL, POORLY CRYSTALLINE FE-AL-SI OXIDES, CHWERTMANNITE, AKAGAN ITE AND OTHERS. OUR GOALS ARE TO GAIN AN UNDERSTANDING OF THE STRUCTURES OF THESE MATERIALS AND THE CONSTRAINTS THEY CAN PROVIDE FOR THE GEOCHEMICAL ENVIRONMENTS WHERE THEY ARE FOUND ON MARS AND OTHER PLANETARY BODIES. Other Administrative Action $0 7/25/18 Not listed WE PROPOSE TO CHARACTERIZE SEVERAL FORMS OF NANOPHASE AND AMORPHOUS MATERIALS FOR GROUND TRUTHING DETECTIONS OF THESE PHASES FROM ORBITAL AND LANDED MISSIONS ON MARS. AN X-RAY AMORPHOUS PHASE HAS BEEN IDENTIFIED AT THE ROCKNEST SITE IN GALE CRATER BY THE MSL (MARS SCIENCE LAB) ROVER (BISH ET AL. 2013 BLAKE ET AL. 2013) AND THE NANOPHASE IRON HYDROXIDE MINERAL AKAGAN ITE HAS BEEN IDENTIFIED IN SEDIMENTARY ROCKS AT YELLOWKNIFE BAY GALE CRATER (MING ET AL. 2014). MODELING OF TES DATA OF BRIGHT OUTCROPS ON MARS ARE CONSISTENT WITH ~25 % ABUNDANCE OF ALLOPHANE-TYPE MATERIALS (RAMPE ET AL. 2012) AND JOINT CRISM-TES ANALYSES OF THE MAWRTH VALLIS REGION INDICATE THAT ALLOPHANE IMOGOLITE AND HYDRATED SILICA ARE ABUNDANT PHASES IN THE CLAY-RICH OUTCROPS (BISHOP AND RAMPE 2014). FURTHER M SSBAUER ANALYSES AT GUSEV AND MERIDIANI IDENTIFIED A NANOPHASE FE OXIDE/HYDROXIDE/OXYHYDROXIDE PHASE IN THE SURFACE UNIT (MORRIS ET AL. 2006A B). THUS COORDINATED TIR-VNIR-XRD-M SSBAUER ANALYSES OF NANOPHASE AND AMORPHOUS MATERIALS ARE NEEDED TO NAIL DOWN THE IDENTITIES OF THESE PHASES IDENTIFIED ACROSS MARS BY MULTIPLE INSTRUMENTS. CANDIDATE NANOPHASE MATERIALS FOR THIS PROJECT ENCOMPASS A RANGE OF ALUMINOSILICATE IRON OXIDE/HYDROXIDE (AND SULFATE)-BEARING MATERIALS INCLUDING ALLOPHANE IMOGOLITE SILICA GEL POORLY CRYSTALLINE FE-AL-SI OXIDES CHWERTMANNITE AKAGAN ITE AND OTHERS. OUR GOALS ARE TO GAIN AN UNDERSTANDING OF THE STRUCTURES OF THESE MATERIALS AND THE CONSTRAINTS THEY CAN PROVIDE FOR THE GEOCHEMICAL ENVIRONMENTS WHERE THEY ARE FOUND ON MARS AND OTHER PLANETARY BODIES. $0 7/25/18 2 WE PROPOSE TO CHARACTERIZE SEVERAL FORMS OF NANOPHASE AND AMORPHOUS MATERIALS FOR GROUND TRUTHING DETECTIONS OF THESE PHASES FROM ORBITAL AND LANDED MISSIONS ON MARS. AN X-RAY AMORPHOUS PHASE HAS BEEN IDENTIFIED AT THE ROCKNEST SITE IN GALE CRATER BY THE MSL (MARS SCIENCE LAB) ROVER (BISH ET AL., 2013; BLAKE ET AL., 2013) AND THE NANOPHASE IRON HYDROXIDE MINERAL AKAGAN ITE HAS BEEN IDENTIFIED IN SEDIMENTARY ROCKS AT YELLOWKNIFE BAY, GALE CRATER (MING ET AL. 2014). MODELING OF TES DATA OF BRIGHT OUTCROPS ON MARS ARE CONSISTENT WITH ~25 % ABUNDANCE OF ALLOPHANE-TYPE MATERIALS (RAMPE ET AL., 2012) AND JOINT CRISM-TES ANALYSES OF THE MAWRTH VALLIS REGION INDICATE THAT ALLOPHANE, IMOGOLITE AND HYDRATED SILICA ARE ABUNDANT PHASES IN THE CLAY-RICH OUTCROPS (BISHOP AND RAMPE, 2014). FURTHER, M SSBAUER ANALYSES AT GUSEV AND MERIDIANI IDENTIFIED A NANOPHASE FE OXIDE/HYDROXIDE/OXYHYDROXIDE PHASE IN THE SURFACE UNIT (MORRIS ET AL., 2006A,B). THUS, COORDINATED TIR-VNIR-XRD-M SSBAUER ANALYSES OF NANOPHASE AND AMORPHOUS MATERIALS ARE NEEDED TO NAIL DOWN THE IDENTITIES OF THESE PHASES IDENTIFIED ACROSS MARS BY MULTIPLE INSTRUMENTS. CANDIDATE NANOPHASE MATERIALS FOR THIS PROJECT ENCOMPASS A RANGE OF ALUMINOSILICATE, IRON OXIDE/HYDROXIDE (AND SULFATE)-BEARING MATERIALS INCLUDING ALLOPHANE, IMOGOLITE, SILICA GEL, POORLY CRYSTALLINE FE-AL-SI OXIDES, CHWERTMANNITE, AKAGAN ITE AND OTHERS. OUR GOALS ARE TO GAIN AN UNDERSTANDING OF THE STRUCTURES OF THESE MATERIALS AND THE CONSTRAINTS THEY CAN PROVIDE FOR THE GEOCHEMICAL ENVIRONMENTS WHERE THEY ARE FOUND ON MARS AND OTHER PLANETARY BODIES. Funding Only Action $109.6k 9/29/17 Not listed WE PROPOSE TO CHARACTERIZE SEVERAL FORMS OF NANOPHASE AND AMORPHOUS MATERIALS FOR GROUND TRUTHING DETECTIONS OF THESE PHASES FROM ORBITAL AND LANDED MISSIONS ON MARS. AN X-RAY AMORPHOUS PHASE HAS BEEN IDENTIFIED AT THE ROCKNEST SITE IN GALE CRATER BY THE MSL (MARS SCIENCE LAB) ROVER (BISH ET AL. 2013; BLAKE ET AL. 2013) AND THE NANOPHASE IRON HYDROXIDE MINERAL AKAGAN ITE HAS BEEN IDENTIFIED IN SEDIMENTARY ROCKS AT YELLOWKNIFE BAY GALE CRATER (MING ET AL. 2014). MODELING OF TES DATA OF BRIGHT OUTCROPS ON MARS ARE CONSISTENT WITH ~25 % ABUNDANCE OF ALLOPHANE-TYPE MATERIALS (RAMPE ET AL. 2012) AND JOINT CRISM-TES ANALYSES OF THE MAWRTH VALLIS REGION INDICATE THAT ALLOPHANE IMOGOLITE AND HYDRATED SILICA ARE ABUNDANT PHASES IN THE CLAY-RICH OUTCROPS (BISHOP AND RAMPE 2014). FURTHER M SSBAUER ANALYSES AT GUSEV AND MERIDIANI IDENTIFIED A NANOPHASE FE OXIDE/HYDROXIDE/OXYHYDROXIDE PHASE IN THE SURFACE UNIT (MORRIS ET AL. 2006A B). THUS COORDINATED TIR-VNIR-XRD-M SSBAUER ANALYSES OF NANOPHASE AND AMORPHOUS MATERIALS ARE NEEDED TO NAIL DOWN THE IDENTITIES OF THESE PHASES IDENTIFIED ACROSS MARS BY MULTIPLE INSTRUMENTS. CANDIDATE NANOPHASE MATERIALS FOR THIS PROJECT ENCOMPASS A RANGE OF ALUMINOSILICATE IRON OXIDE/HYDROXIDE (AND SULFATE)-BEARING MATERIALS INCLUDING ALLOPHANE IMOGOLITE SILICA GEL POORLY CRYSTALLINE FE-AL-SI OXIDES CHWERTMANNITE AKAGAN ITE AND OTHERS. OUR GOALS ARE TO GAIN AN UNDERSTANDING OF THE STRUCTURES OF THESE MATERIALS AND THE CONSTRAINTS THEY CAN PROVIDE FOR THE GEOCHEMICAL ENVIRONMENTS WHERE THEY ARE FOUND ON MARS AND OTHER PLANETARY BODIES. $109.6k 9/29/17 1 WE PROPOSE TO CHARACTERIZE SEVERAL FORMS OF NANOPHASE AND AMORPHOUS MATERIALS FOR GROUND TRUTHING DETECTIONS OF THESE PHASES FROM ORBITAL AND LANDED MISSIONS ON MARS. AN X-RAY AMORPHOUS PHASE HAS BEEN IDENTIFIED AT THE ROCKNEST SITE IN GALE CRATER BY THE MSL (MARS SCIENCE LAB) ROVER (BISH ET AL., 2013; BLAKE ET AL., 2013) AND THE NANOPHASE IRON HYDROXIDE MINERAL AKAGAN ITE HAS BEEN IDENTIFIED IN SEDIMENTARY ROCKS AT YELLOWKNIFE BAY, GALE CRATER (MING ET AL. 2014). MODELING OF TES DATA OF BRIGHT OUTCROPS ON MARS ARE CONSISTENT WITH ~25 % ABUNDANCE OF ALLOPHANE-TYPE MATERIALS (RAMPE ET AL., 2012) AND JOINT CRISM-TES ANALYSES OF THE MAWRTH VALLIS REGION INDICATE THAT ALLOPHANE, IMOGOLITE AND HYDRATED SILICA ARE ABUNDANT PHASES IN THE CLAY-RICH OUTCROPS (BISHOP AND RAMPE, 2014). FURTHER, M SSBAUER ANALYSES AT GUSEV AND MERIDIANI IDENTIFIED A NANOPHASE FE OXIDE/HYDROXIDE/OXYHYDROXIDE PHASE IN THE SURFACE UNIT (MORRIS ET AL., 2006A,B). THUS, COORDINATED TIR-VNIR-XRD-M SSBAUER ANALYSES OF NANOPHASE AND AMORPHOUS MATERIALS ARE NEEDED TO NAIL DOWN THE IDENTITIES OF THESE PHASES IDENTIFIED ACROSS MARS BY MULTIPLE INSTRUMENTS. CANDIDATE NANOPHASE MATERIALS FOR THIS PROJECT ENCOMPASS A RANGE OF ALUMINOSILICATE, IRON OXIDE/HYDROXIDE (AND SULFATE)-BEARING MATERIALS INCLUDING ALLOPHANE, IMOGOLITE, SILICA GEL, POORLY CRYSTALLINE FE-AL-SI OXIDES, CHWERTMANNITE, AKAGAN ITE AND OTHERS. OUR GOALS ARE TO GAIN AN UNDERSTANDING OF THE STRUCTURES OF THESE MATERIALS AND THE CONSTRAINTS THEY CAN PROVIDE FOR THE GEOCHEMICAL ENVIRONMENTS WHERE THEY ARE FOUND ON MARS AND OTHER PLANETARY BODIES. Funding Only Action $108.1k 7/13/16