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Astronomy and Cosmology
Astronomy and Astrophysics
Adding more meteorites to my collection
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[QUOTE="davenn, post: 6867275, member: 283516"] Hi Andy, sorry for the delay, just home from 2 weeks on your side of the planet. 3 nites in London, 2 nites in Paris and 7 nites in Iceland A beautiful chondrite :smile: not one I have in my collection ... US$89 isnt too bad for the work required to produce a thin section I see it is still available I used to do thin sections when I was doing my geology degree at uni. it's a lot of messy fun That sample is a LL3.... LL = Low iron, low metal and the 3 indicates the amount of metamorphism of the chondrules The 3 main groups are .... LL = Low iron, low metal L = Low iron H = High iron Then the different grades of metamorphism 0 to 5 and of weathering = W0 to W5 H = high iron as above C is for the carbonaceous chondrites and there is quite a range of them ..... The C = Carbonaceous and the following letter denotes the location of the first identified sample of that group ( what we call a type name) CI = Ivuna CM = Murchison (Victoria state, Australia) CO = Ornans CR = Renazzo CH = (ALH) = Allen Hills, Antarctica CB = Bencubbin = Western Australia state, Australia CV = Vigarano CK = Karoonda = South Australia state, Australia for your fun, I will let you look up the locations of the others :wink::wink: Yes, polished AND etched brings out the Widmanst[I]ä[/I]tten pattern ( also called the Thompson Structure) of the iron and nickel crystals [ATTACH type="full"]323816[/ATTACH] from my collection ... Seymchan, Russia cheers Dave [/QUOTE]
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Adding more meteorites to my collection
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