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exoscientist
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In this post I discuss the connection between phosphorus and clays on Earth:<br /><br />exoscientist<br />rock<br />01/05/05 10:36 AM<br />Phosphorus and clays. [re: exoscientist] <br />http://uplink.space.com/showthreaded.php?Cat=&Board=sciastro&Number=123012<br /><br /> The suggestion there might be clays in Wishstone rock came from imaging of the brushed area showing smooth, dark inclusions. Close up here:<br /><br />http://sciforums.com/attachment.php?attachmentid=3654<br /><br /> Wishing Well rock is also supposed to be high in phosphorus. There was a great image on the Mark Carey Mars forum of Wishing Well rock:<br /><br />http://www.lipfordm.com/wtsi/p-2M158146955EFFA269P2959M2M1-90.jpg<br /><br />On the right side, inside the rim of the RAT hole there is dark material that has a soft appearance as of clay. <br />NASA needs to find means of determining the chemical makeup of this dark material. <br /><br /><br />Robert Clark <br /> <div class="Discussion_UserSignature"> </div>