Meteoritical Bulletin: Entry for Ramlat as Sahmah 221

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Ramlat as Sahmah 221

Basic information

Name: Ramlat as Sahmah 221
This is an OFFICIAL meteorite name.
Abbreviation: RaS 221
Observed fall: No
Year found: 2003
Country: Oman
Mass: 48.3 g

Classification
history:

Recommended:

CV3 [explanation]

This is 1 of 470 approved meteorites (plus 2 unapproved names) classified as CV3. [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites

Comments:

Approved 1 Sep 2006
Revised 4 Aug 2008: final writeup

Writeup

Writeup from MB 93:

Ramlat as Sahmah 221 0°31.912'N, 56°2.941'E

Oman

Find: 19 January 2003

Carbonaceous chondrite (CV3)

History: A fragmented stone was found by A. Al-Kathiri, M. Eggimann, B. Hofmann, and U. Krähenbühl during a search for meteorites.

Physical characteristics: The dark gray stone (3 fragments totaling 48.29 g) shows oriented fusion crust flow lines.

Petrography and Geochemistry: (E. Gnos, UBE; B. Hofmann, NMBE; A. Al-Kathiri, UBE) The composition of olivine ranges from Fa_1.8-6.0, low-Ca pyroxene show compositions in the range of Fs_2.5-2.8Wo_1.3-2.6. CAIs are predominantly of the fluffy type. The matrix/chondrules + aggregates ratio is 0.51. Red chondrules dominate over blue chondrules in cathodoluminescence images indicating metamorphic grade 3.2. Oxidation of sulfides is minor.

Classification: Carbonaceous chondrite (CV3), minimal shock.

Specimens: The entire sample is on deposit at NMBE.

Writeup from MB 94:

the correct latitude for Ramlat as Sahmah 221 is 20°31.912?N.

Data from:
  MB93
  Table 8
  Line 126:

Origin or pseudonym:	Oman, desert plain
Date:	19-Jan-03
Latitude:	20°31.912'N
Longitude:	56°2.941'E
Mass (g):	48.3
Pieces:	3
Class:	CV3
Type spec mass (g):	48.3
Comments:	latitude corrected in MB94

Institutions
and collections

NMBE: Natural History Museum Bern Bernastrasse 15 CH-3005 Bern Switzerland, Switzerland; Website (institutional address; updated 2 Mar 2012)
UBE: University of Bern, University of Bern, Hochschulstrasse 4, CH-3012 Bern, Switzerland (institutional address)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 93, MAPS 43, 571-632 (2008)
Published in Meteoritical Bulletin, no. 94, MAPS 43, 1551-1588 (2008)

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Geography:

Oman

Coordinates:
Recommended::	(20° 31' 55"N, 56° 2' 56"E)

Statistics:
This is 1 of 1753 approved meteorites from Al Wusta, Oman (plus 81 unapproved names)
This is 1 of 3998 approved meteorites from Oman (plus 441 unapproved names)

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Revision
history:

This lists important revisions made to data for this record.

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