[meteorite-list] caliche cleaning and Parnallee question
Hi, Thinking about caliche - as it is mainly calcium carbonate , a wash with HCl would probably nuke it - however, I have got a 66g lump of Dean's CV3 and it is relatively riddled for the first 0.5cms to 1cm with caliche veins - I suspect that a dunk in HCl may cause fragments of the meteorite to break away Also, having just bought a 40g slice of Parnallee (Wow!!!) can any one confirm whether it is a L3.6 or an LL3.6? just my 2 euros worth dave __ Meteorite-list mailing list [EMAIL PROTECTED] http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] caliche cleaning and Parnallee question
Dave and List, Dave, you also used to collect minerals (or still do). Remember how ugly an amethyst looks after a wash with HCL? Instead of risking fragments to break away or having other mineral constuents dissolved, I'd rather leave some caliche Also, having just bought a 40g slice of Parnallee (Wow!!!) can any one confirm whether it is a L3.6 or an LL3.6? Congratulations! Yes, I can confirm: LL3.6, brecciated; gas-rich; unequilibrated; microgabbro clasts - some people classified it as an LL3.7 * * Reference: NELSON V.E. et al. (2002) Size-frequency distribution of chondrules and chondrule fragments in LL3 chondrites: Implications for parent-body fragmentation of chondrules (MAPS 37-10, 2002, 1361-1376). To: [EMAIL PROTECTED] [EMAIL PROTECTED] __ Meteorite-list mailing list [EMAIL PROTECTED] http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] caliche cleaning and Parnallee question
Hi Bernd and list Oh yes, I have a magnificent collection of rocks (terrestrial) and I agree - I'd leave the caliche - if necessary lightlybrush it off, don't forget thatTroilite and other sulphides will also reactwith the HCL to give off a smelly gas! You could be left will a stinky sludge!!! thanks for the data dave IMCA #0092 ---Original Message--- From: [EMAIL PROTECTED] Date: 10/05/2004 17:24:10 To: [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: Re: [meteorite-list] caliche cleaning and Parnallee question Dave and List, Dave, you also used to collect minerals (or still do). Remember how ugly an amethyst looks after a wash with HCL? Instead of risking fragments to break away or having other mineral constuents dissolved, I'd rather leave some caliche Also, having just bought a 40g slice of Parnallee (Wow!!!) can any one confirm whether it is a L3.6 or an LL3.6? Congratulations! Yes, I can confirm: LL3.6, brecciated; gas-rich; unequilibrated; microgabbro clasts - some people classified it as an LL3.7 * * Reference: NELSON V.E. et al. (2002) Size-frequency distribution of chondrules and chondrule fragments in LL3 chondrites: Implications for parent-body fragmentation of chondrules (MAPS 37-10, 2002, 1361-1376). To: [EMAIL PROTECTED] [EMAIL PROTECTED] . IncrediMail - Email has finally evolved - Click Here__ Meteorite-list mailing list [EMAIL PROTECTED] http://six.pairlist.net/mailman/listinfo/meteorite-list
