A completely unofficial count: Of the 12 membrane boxes I have, about half of them are going cloudy. All but one are meteorites; the other is a Louisiana opal (sandstone matrix). Fortunately, none of the professional displays (enclosed labels) or specks it would be problematic to rebox (Martians) have decayed yet, although that may be coming. I mainly use the membrane boxes when I have a specimen whose aesthetics are enhanced by being able to see (through) both sides, or if it came that way. If you use membrane boxes to create those nifty display boxes with elaborate inside labels, you may want to take their apparent shelf life into consideration. My meteorites are not in a climate controlled area, although once a specimen goes in a gem jar or box, it generally stays there and has limited exposure to the outside air.
Best! Tracy Latimer ---------------------------------------- > From: fuj...@mac.com > Date: Tue, 5 Mar 2013 06:25:35 -1000 > To: s...@bellsouth.net > CC: meteorite-list@meteoritecentral.com; daist...@hotmail.com > Subject: Re: [meteorite-list] Membrane boxes go boom? > > Sorry to hear about your membranebox Sean. But Ghubara is a bleeder and I > never put a ruster or bleeder in a membranebox because they will stain the > polyurethane membranes permanently (on a good note, Ron H. used to replace > them for me, or broken latches before he passed). > > Also, if you live in a highly humid environment like I do, then you don't > want to be using membrane boxes for certain kinds of specimens because they > will trap the humidity inside. I typically mount and store specimens I keep > in membrane boxes in my institute office, which is kept in climate controlled > AC 24 hours a day. > > Tracy, I've never experienced a membrane getting cloudy. But as I mentioned > before, all membrane boxes are kept in an air conditioned office. I have > membrane boxes over five years old that are in the same condition as new > ones, both enclosing specimens of all kinds and never used. > > Other than the aforementioned issues, membrane boxes are a great solution to > storage, protection and display of specimens. > > gary > > On Mar 5, 2013, at 5:55 AM, "Sean T. Murray" <s...@bellsouth.net> wrote: > > > I have a very stubborn Ghubara that destroyed two membrane boxes in the > > same fashion. Whatever evil substance that oozes from that chondrite kills > > a membrane in short span. > > > > Sean. > > > > -----Original Message----- From: tracy latimer > > Sent: Monday, March 04, 2013 10:28 PM > > To: meteorite-list@meteoritecentral.com > > Subject: [meteorite-list] Membrane boxes go boom? > > > > > > I am observing something weird with some of my older membrane boxes. The > > membrane is starting to degrade and go cloudy, and in at least one specimen > > (Imilac, bought at Tucson, I forget the year) the membrane has ruptured and > > the slice is rattling around loose in the box. Has anyone else had this > > happen to their specimens? > > > > Best! > > Tracy Latimer > > > > ______________________________________________ > > > > Visit the Archives at http://www.meteorite-list-archives.com > > Meteorite-list mailing list > > Meteorite-list@meteoritecentral.com > > http://six.pairlist.net/mailman/listinfo/meteorite-list > > ______________________________________________ > > > > Visit the Archives at http://www.meteorite-list-archives.com > > Meteorite-list mailing list > > Meteorite-list@meteoritecentral.com > > http://six.pairlist.net/mailman/listinfo/meteorite-list > > > Gary Fujihara > Big Kahuna Meteorites > PO Box 4175, Hilo, HI 96720 > (808) 640-9161 > http://bigkahuna-meteorites.com/ > http://www.ebay.com/sch/fujmon/m.html > > ______________________________________________ > > Visit the Archives at http://www.meteorite-list-archives.com > Meteorite-list mailing list > Meteorite-list@meteoritecentral.com > http://six.pairlist.net/mailman/listinfo/meteorite-list ______________________________________________ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
