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In 2008 the Phoenix Mars lander Wet Chemistry Laboratory (WCL) measured 0.6wt% of perchlorate (ClO4-) in the martian soil. A crucial question remaining unanswered is the identity of the parent salt phase(s) of the ClO4-. Due to the ClO4- ion’s high solubility and stability, its distribution, chemical forms, and interactions with water, could reveal much about the aqueous history of the planet. Until...
The results of the Mars Phoenix Lander’s Wet Chemistry Laboratory (WCL) for the analyses of the soluble ionic species present in the soil at the northern polar plains of Mars are compared to soil from the Antarctic Dry Valleys (ADVs), martian meteorite EETA79001 sawdust, and a Mars simulant. The ADV soil was compared to the Phoenix site by averaging the samples at analogous 0–5cm depths and also all...
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