Could it be gypsum?
Oxidation of sulphides -> sulphuric acid, reacts with CAI and silicates
-> CaSO4 = gypsum.
I have had a number of weathered sulphide ore samples which have
developed white patches on the surface after I have washed them. I don't
know if it is gypsum on my specimens but I have always suspected it.
Thanks for sharing!
/Göran
Marcin Cimala - PolandMET wrote:
Hello List
Tooday I wanted to make some description for my new meteorites. When I
opened one of the boxes, something white almost eat me :)
OK now seriously
Here is my new MC058 CO3.x chondrite. I received it on end of august,
cut several slices and store it in cardboard box like all other
meteorites that wait for clasification. Tooday I wanted to make photos
and I have found large white crystals growing on both sides of two
slices.
Wow, something fantastic.
I remember I have similar things on my Ogrueil, but this one is much
more larger. Anyone know what it is ?
I will leave them in box for next two months and lets wait if this
will still grown. But now there will maybe be too cold for them.
Anyway I will try to hold them undamaged even for next year.
Have fun
http://www.polandmet.com/_mc058.htm
PS.
I have for sale three large complete specimens of new CV3,
unclassified but propably paired with one of the lates CV's. TKW =
1154g. Attractive low price. Specimens will be classified. For more
info please email me.
-----[ MARCIN CIMALA ]-----[ I.M.C.A.#3667 ]-----
http://www.Meteoryty.pl marcin(at)meteoryty.pl
http://www.PolandMET.com marcin(at)meteorite.pl
http://www.Gao-Guenie.com GSM: +48 (793) kosmos
--------[ Member of Polish Meteoritical Society ]--------
______________________________________________
http://www.meteoritecentral.com
Meteorite-list mailing list
[email protected]
http://six.pairlist.net/mailman/listinfo/meteorite-list
______________________________________________
http://www.meteoritecentral.com
Meteorite-list mailing list
[email protected]
http://six.pairlist.net/mailman/listinfo/meteorite-list
