tin 1 , K.A. Farley 1 , B.A. Cohen 2 , P.R. Mahaffy 3 , C.A. Malespin 3 , S.P. Schwenzer 4 , P.M. Vasconcelos 5 , D.W. Ming 6 , A.C. McAdam 3 , and R. Navarro-Gonzalez 7 , 1 Division of Geological and Planetary Sciences, Caltech ([email protected]), 2 NASA Marshall Space Flight Center, 3 NASA Goddard Space Flight Center, 4 EEES, The Open University, Milton Keynes, UK, 5 School of Earth Scien...

Introduction: The twin Mars Exploration Rovers (MER) Spirit and Opportunity have explored the Martian surface at Gusev Crater (GC) and Meridiani Planum (MP) for more that 1840 sols (more than 5 Earth years). Their science payload [1] includes instruments for mineralogical (Mössbauer (MB), Mini-TES, and Pancam) and chemical (APXS) analysis and a tool (RAT) for brushing and grinding rock surfaces...

This paper presents a novel family of jarosites with the molecular formula MFe3(SO4)2(OH)6·xH2O; M = Na, K, NH4 that have high efficiency in adsorption As(V) and Pb(II) dissolved water. The been prepared by conventional heating at temperatures close to 95 °C for 3 h. synthesis method was improved optimized reduce time energy consumption. allowed Na− K−jarosites yield up 97.8 wt.% 105 150 °C, re...

Sensitive amino acid composition and chirality analysis is demonstrated using the Mars Organic Analyzer (MOA), a portable microfabricated capillary electrophoresis (CE) instrument. The MOA integrates all high voltage power supplie s, pneumatic controls, and fluorescence detection optics. The microfabricated device is a novel multi-layer structure combining glass separation channels [1] and micr...