Congratulations Todd on the classification and naming of your cold find! What a great name for a meteorite as well.... "Thumb Butte". Way to go!
----- Forwarded Message ---- From: Wayne Holmes <holm...@frontiernet.net> To: meteorite-list@meteoritecentral.com Sent: Mon, January 25, 2010 3:06:20 PM Subject: [meteorite-list] Introducing Thumb Butte Congratulations to Todd Parker on his new classification Thumb Butte. One nicely Oriented 104 g specimen H3.8 Chondrite. Todd found this specimen while hunting in the Bullhead/Laughlin area in Mar, 2008. This is the first of Todds 4 new cold finds to be classified. Check out the pictures on my website (first page, scroll down). http://www.meteoritesrock.com/index.html Thumb Butte 35º 10.196´N 114° 27.351´ W Mojave County, Arizona, USA Find: 1 March 2008 Ordinary chondrite (H3.8) History: Mr. Todd Parker found a 104 g stone on a small, alluvium-covered flat just west of Thumb Butte and 4 miles east of Bullhead City, Mojave Co., Arizona. Physical characteristics: The single stone is mostly covered by moderately weathered reddish-brown fusion crust. Petrography (T. Bunch and J. Wittke, NAU): Chondrules have sharp outlines with a mean diameter of ~0.4 mm. Matrix is slightly recrystallzed with some remnant calcic glass. Chondrule mesostasis is clear to turbid and several chondrules are armored with metal and minor FeS. Contains olivine, orthopyroxene, kamacite, FeS, taenite, merrillite, Cl-apatite, chromite and a trace of plagioclase. Fresh interior with reddish staining, weathering grade is W1. Shock level is S2. Mineral compositions: Olivine, Fa17.3 - 24; orthopyroxene, Fs15.7 - 19.1Wo 1.5 - 2.3; taenite Ni = 41.2 wt%; chromite cr# = 86. Classification: Ordinary chondrite (H3.8). Type specimen: 20 g are on deposit at NAU. Mr. Todd Parker holds the main mass. ______________________________________________ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list ______________________________________________ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
