[meteorite-list] Glorieta Mountain
From: MacovichCo_at_aol.com <MacovichCo_at_meteoritecentral.com>
Date: Thu Apr 22 09:42:06 2004
Greetings Bernd and List:
A point of clarification as it regards Bernd's last missive. While hundreds
of kilos of Glorieta Mountain have indeed been recovered, the largest
specimen of a Glorieta PALLASITE recovered prior to Steve's recovery of the
20.2 kg specimen is a mass of only 395 grams.
There is a single specimen somewhat larger than the 395 gram mass with a rind
of olivine, but Steve doesn't consider this to be--in the conventional sense
of the term--a pallasitic mass.
Glorieta Mountain has turned out to be such a great project for myself, Geoff
and Joel; and for Steve it has been, well, he can't quite find the words to
express the sum of his fifteen-year journey to the end of the rainbow...and
back. (He's standing next to me complaining about Tucson's poor city plan at
Congratulations, Joel, and with much gratitude to Steve and Geoff.
In a message dated 1/27/01 7:02:23 PM,
<< In the February edition of METEORITE, Geoff wrote:
NOTKIN G. (2001) Legend of Glorieta Mountain
(METEORITE, Feb. 2001, Vol. 7, No.1, pp. 24-27):
V.F. Buchwald supported an aerial breakup theory, and in his
Handbook of Iron Meteorites stated that the " t h r e e largest
blocks are oriented individuals with fusion crust and regmaglypts,"
and that their surface features were "in harmony with a late breakup
in the atmosphere, so that these masses fell close together."
Cohen even mentions 13 highly oriented pieces in:
COHEN E. (1903) Meteoritenkunde, Vol. 2, pp. 162-163:
"According to Brezina, Glorieta [Mountain] is a good example of
noticeable orientation, although disruption took place [high] in the
atmosphere; all the 13 pieces found so far and ranging between 67.5 kg
and 300 gr, are highly oriented. The disruption must have occurred at
quite a considerable height, as the exposed surfaces have been partially
covered by a secondary melting layer; its cosmic velocity, however, had
already been retarded so thoroughly that the oriented surface features
could not be wiped out anymore."
Received on Sun 28 Jan 2001 03:08:15 AM PST