Meteoritical Bulletin: Entry for Dhofar 1754

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Dhofar 1754

Basic information

Name: Dhofar 1754
This is an OFFICIAL meteorite name.
Abbreviation: Dho 1754
Observed fall: No
Year found: 2001
Country: Oman
Mass: 580 g

Classification
history:

Meteoritical Bulletin:	MB 102	(2013)	Howardite
Recommended:			Howardite [explanation]

This is 1 of 439 approved meteorites classified as Howardite. [show all]
Search for other: Achondrites, HED achondrites, and Howardites

Comments:

Approved 1 Mar 2013

Writeup

help

Writeup from MB 102:

Dhofar 1754 (Dho 1754) 19°23.58’N, 54°33.25’E

Zufar, Oman

Found: 2001 May 2

Classification: HED achondrite (Howardite)

History: A single fusion-crusted rock of 580 g was found near Dhofar 930 by an anonymous finder May 2, 2001.

Petrography: In thin section the rock has two distinct lithologies: one is basaltic and the other is diogenitic (each about 50 vol% in the section studied). Thus the rock is a breccia. The low-Ca pyroxene is variable in composition. Most are Fs_22-34; more Fs-rich olivine (~Fs_45-60) probably belongs to the eucritic lithology. Typical plagioclase has a composition of An_82-95.The meteorite is a howardite.

Geochemistry: 42 randomly selected low-Ca pyroxenes were analyzed by SEM-EDS: The low-Ca pyroxene is variable in composition (~Fs_22-60) with mean Fe/Mn= 32.5. In the distribution a clear peak around Fs_23-25is found, which is typical for diogenites; more Fs-rich pyroxene (~Fs_40-60) probably belongs to the eucritic lithology. Plagioclase has a composition of An_82-95.

Classification: Pairing with Dhofar 930 (polymict eucrite) is unlikely because of the high abundance of Fs-poor (Fs_<30) low-Ca pyroxene within Dhofar 1754, which has not been reported from Dhofar 930.

Data from:
  MB102
  Table 0
  Line 0:

State/Prov/County:	Zufar
Date:	2001 May 2
Latitude:	19°23.58'N
Longitude:	54°33.25'E
Mass (g):	580
Pieces:	1
Class:	Howardite
Ferrosilite (mol%):	22-60
Classifier:	A. Bischoff and M. Matthes, IfP; E. Haiderer, Vienna
Type spec mass (g):	22
Type spec location:	IfP
Main mass:	unknown
Comments:	Field-name: MARU; submitted by Addi Bischoff

Institutions
and collections

IfP: Institut für Planetologie, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany (institutional address; updated 23 Jan 2012)
Haiderer: Erich Haiderer Laboratory, P.O. Box 88, A-1140 Vienna, Austria (private address; updated 7 Jan 2015)
Vienna: University of Vienna, Dr-Karl-Lueger-Ring 1, A-1010 Wien, Austria (institutional address)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015

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Geography:

Oman

Oman

Coordinates:
Recommended::	(19° 23' 35"N, 54° 33' 15"E)

Statistics:
This is 1 of 2167 approved meteorites from Zufar, Oman (plus 24 unapproved names)
This is 1 of 4001 approved meteorites from Oman (plus 436 unapproved names)

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