Re: [meteorite-list] Cristobalite

Free silica is at most an accessory component in known meteorites. If the whole rock has a high cristobalite peak, it is likely a terrestrial rock. Possibilities include sandstone, quartzite and various silicaceous igneous rocks. On Fri, May 21, 2021 at 4:05 PM yasmani.ceballo--- via Meteorite-lis

[meteorite-list] Cristobalite

Hello friends I have a surviving difractogram of a rock that was thinked to be meteorite in the past, but now is lost. The only information we have is the presence of these minerals: cristobalite, quartz, olivine, enstatite, plagioclase and amorphous materials. Probably super high peaks of c

Re: [meteorite-list] SALE: BUR-ABOR, AN INCOMPARABLE METEORITE SPECIMEN – MAIN MASS

In my estimation, Bur-Arbor likely rests in the category of "Find - Doubtful Fall" or "Find" as defined below. The degree of weathering seen on the mass is unlikely to be from an event in 1997, though an earlier event in the region may be on record somewhere, and thus be 

Re: [meteorite-list] SALE: BUR-ABOR, AN INCOMPARABLE METEORITE SPECIMEN – MAIN MASS

Bill, please see Microsoft Word - falls and finds - accepted 2-24-2015.docx (usra.edu) for an answer to your question. The Nomenclature Committee of the Meteoritical Society maintains these definitions. -Michael in so. Cal.

[meteorite-list] Meteorite Picture of the Day

Today''s Meteorite Picture of the Day: Searsmont Contributed by: Frank Cressy http://www.tucsonmeteorites.com/mpodmain.asp?DD=05/21/2021 __ EXTREMELY RARE MARTIAN AND LUNAR MAIN MASS METEORITES https://www.bonhams.com/auctions/27190/ Coming to auction