[meteorite-list] Introducing Thumb Butte

From: Galactic Stone & Ironworks <meteoritemike_at_meteoritecentral.com>
Date: Mon, 25 Jan 2010 17:11:09 -0500
Message-ID: <e51421551001251411pd6fb1efw86ec476a9d046c93_at_mail.gmail.com>

That has to be one of the coolest meteorite names ever. LOL

I want a micro!

Congrats to Todd. :)


On 1/25/10, Wayne Holmes <holmesw at frontiernet.net> wrote:
> 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 35? 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.
>
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Received on Mon 25 Jan 2010 05:11:09 PM PST