Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site ames.UUCP Path: utzoo!watmath!clyde!burl!ulysses!allegra!bellcore!decvax!ittvax!dcdwest!sdcsvax!sdcrdcf!hplabs!intelca!qantel!dual!ames!al From: al@ames.UUCP (Al Globus) Newsgroups: net.space Subject: Re: Orphaned Response Message-ID: <826@ames.UUCP> Date: Thu, 28-Feb-85 14:02:48 EST Article-I.D.: ames.826 Posted: Thu Feb 28 14:02:48 1985 Date-Received: Mon, 4-Mar-85 08:16:14 EST References: <110@ISM780.UUCP> <5130@utzoo.UUCP> Organization: NASA-Ames Research Center, Mtn. View, CA Lines: 13 > > As i remember it, the moon rocks had a high titanium content > > relative to earth rocks. Since titanium is strong, light, and > > can withstand high tempretures, it seems like building a titanium > > extractor using some of the solar mirrors would be useful. > > Actually, a fair number of earth rocks have substantial titanium > content. The problem with titanium is not finding it, but getting > it out -- it's ferociously chemically active and hangs on TIGHT to > elements like oxygen. You've got to do a good job of separation, > too, because even a trace of oxygen makes it brittle. > -- And those same Moon rocks are about 60% oxygen (or was it 40%?).