Meteoritical Bulletin: Entry for Dhofar 1441

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Dhofar 1441

Basic information

Name: Dhofar 1441
This is an OFFICIAL meteorite name.
Abbreviation: Dho 1441
Observed fall: No
Year found: 2003
Country: Oman
Mass: 268 g

Classification
history:

Meteoritical Bulletin:	MB 95	(2009)	Ungrouped achondrite
Recommended:			Achondrite-ung [explanation]

This is 1 of 140 approved meteorites classified as Achondrite-ung. [show all]
Search for other: Achondrites, Ungrouped achondrites

Comments:

Approved 9 Jan 2009

Writeup

help

Writeup from MB 95:

Dhofar 1441 18°26.16′N 54°29.03′E

Dhofar, Oman

Find: 2003

Achondrite (ungrouped)

History: Two fragments of a meteorite were found by an anonymous collector in the Dhofar province of Oman.

Physical characteristics: The dark-brown stones of 267.85 g total weight have irregular shapes. The fusion crust is not preserved.

Petrography (C. A. Lorenz, Vernad): The meteorite is a breccia, consisting of rock and mineral clasts embedded in a well crystallized melt matrix. Lithic clasts are basalts, gabbros, norites, metamorphosed pyroxene-feldspar rocks, clastic breccias, melts and rare glasses. Major phases are pyroxene and feldspar. Some pyroxenes have fine exsolution lamellae. Silica, olivine, chromite, ilmenite, troilite and metal Fe-Ni are rare phases. The matrix is fine-grained aggregate of pyroxene and feldspar. Mineral compositions and geochemistry (N. N. Kononkova, Vernad): Pyroxene is En_35.3–72.5Wo_1.4–5.0(Fe/Mn = 36.3); feldspar An_92.2An_7.6, rare An_74.4Ab_23.6; olivine is Fa_28.8(Fe/ Mn = 50.4).

The bulk composition (I. A. Roshina, Vernad) XRF (wt%): SiO₂= 47.83, TiO₂= 0.30, Al₂O₃= 10.41, Na₂O = 0.32, K₂O = 0.04, CaO = 6.5, MgO = 10.88; MnO = 0.52; FeO = 20.28, Cr₂O₃= 0.53. Oxygen isotopes (Franchi I., OU): δ¹⁷O = 2.675; δ¹⁸O = 5.508.

Classification: Achondrite (ungrouped, impact melt breccia) with minor weathering.

Type specimens: A total 28.3 g and one thin section are on deposit at Vernad. An anonymous collector holds the main mass.

Data from:
  MB95
  Table 7
  Line 10:

State/Prov/County:	Zufar, Oman
Date:	2003
Latitude:	18°26.16'N
Longitude:	54°29.03'E
Mass (g):	267.8
Pieces:	2
Class:	Ungrouped achondrite
Fayalite (mol%):	28.8
Ferrosilite (mol%):	27.5-64.7
Wollastonite (mol%):	1.4-5
Classifier:	C. Lorenz and N. Kononkova, Vernad
Type spec mass (g):	28.3
Type spec location:	Vernad
Main mass:	anonymous
Comments:	Feldspar, An7.6–92.2; Oxygen isotopes, δ18O=5.51, δ17O=2.67

Plots:

O isotopes:

Institutions
and collections

OU: Planetary and Space Sciences Department of Physical Sciences The Open University Walton Hall Milton Keynes MK7 6AA United Kingdom, United Kingdom (institutional address; updated 8 Dec 2011)
Vernad: Vernadsky Institute of Geochemistry and Analytical Chemistry, Russia (institutional address; updated 21 Feb 2016)

Catalogs:

References:

Published in Meteoritical Bulletin, no. 95, MAPS 44, 429-462 (2009)

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Geography:

Oman

Oman

Coordinates:
Recommended::	(18° 26' 10"N, 54° 29' 2"E)

Statistics:
This is 1 of 2169 approved meteorites from Zufar, Oman (plus 24 unapproved names)
This is 1 of 4006 approved meteorites from Oman (plus 436 unapproved names)

Proximity search:

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