header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 18 Aug 2019
Search for: Search type: Search limits: Display: Publication:
Names
Text help
Places
Classes
Years
Contains
Starts with
Exact
Sounds like
NonAntarctic
Falls  Non-NWAs
What's new
  in the last:
Limit to approved meteorite names
Search text:  
Dhofar 535
Basic information Name: Dhofar 535
     This is an OFFICIAL meteorite name.
Abbreviation: Dho 535
Observed fall: No
Year found: 2000
Country: Oman
Mass:help 204 g
Classification
  history:
Meteoritical Bulletin:  MB 87  (2003)  Chondrite-ung
MetBase:  v. 7.1  (2006)  Chondrite-ung
Recommended:  Chondrite-ung    [explanation]

This is 1 of 25 approved meteorites classified as Chondrite-ung.   [show all]
Search for other: Ungrouped chondrites
Writeuphelp
Writeup from MB 87:

Dhofar 535

Oman

Found 2000 January 16

Chondrite (ungrouped)

Many stones weighing a total of 204 g were found in the Dhofar region of Oman. Mineralogy and classification (M. Ivanova, Vernad; L. Taylor, UTenn): the meteorite consists of chondrules, 0.08–3.2 mm in diameter, (0.86 mm in average) of different types, PO, POP, BO, RP, CC, and their fragments embedded in a fine-grained matrix. Chondrule/matrix ratio is 1.1. Olivine and low-Ca pyroxene have large compositional ranges: olivine has Fa1–50, CaO 0.2 wt%; Al2O3 0.06 wt%, Cr2O3 0.09 wt%, PMD of Fa 42%; low-Ca pyroxene is Wo2– 3.5En53–95; chondrules contain glassy mesostasis. Accessory minerals include: pigeonite, chromite, troilite, rare hydroxides, and rare FeNi metal (Ni 5 wt%; Co 0.4 wt%). Thermoluminescence studies (A. I. Ivliev, Vernad) indicate petrologic type 3.2/3.3. The meteorite is heavily weathered, and some silicates are altered. Weathering grade is W5; shock stage is S1. Based on the very low abundance of FeNi metal and hydroxides, Dho 535 could belong to either the LL or R chondrite groups but with very abundant matrix. The average size of chondrules is consistent with LL chondrites. A histogram showing the distribution of olivine is similar to unequilibrated ordinary chondrites. FeNi metal is mostly kamacite, typical for H chondrites and unusual for R chondrites. Sulfide assemblages and chromite chemistry are also unusual for R chondrites. The absence of refractory objects and olivine chemistry distinguish Dho 535 from C3 chondrites. Oxygen isotope composition (R. N. Clayton, UChi): δ18O = +8.56‰; δ17O = +4.96‰, Δ17Ο = 4.51‰ [sic; note from Database Editor: this should probably be Δ17Ο = 0.51‰] is unusual for any chondrite type. Specimens: type specimen of 46.8 g and thin section, Vernad; main mass with anonymous finder.

Data from:
  MB87
  Table 4
  Line 119:
Date:11 Jan 2000
Latitude:19°20.0'N
Longitude:54°47.7'E
Mass (g):204
Pieces:Many
Class:Chond Ung
Classifier:M. Ivanova, Vernad, L. Taylor, UTenn
Type spec mass (g):49.5
Plots: O isotopes:  
Institutions
   and collections
UChi: University of Chicago, Chicago, IL 60637, United States (institutional address; updated 28 Feb 2011)
UTenn: Planetary Geosciences Institute, Department of Earth and Planetary Sciences, University of Tennessee, 1412 Circle Drive, Knoxville, TN 37996-1410, United States (institutional address; updated 1 Nov 2011)
Vernad: Vernadsky Institute of Geochemistry and Analytical Chemistry, Russia (institutional address; updated 21 Feb 2016)
Catalogs:
References: Published in Meteoritical Bulletin, no. 87, MAPS 38, A189-A248 (2003)
Find references in NASA ADS:
Find references in Google Scholar:
Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Don Edwards   
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Alan Mazur   
Solar Anamnesis   
Volker Heinrich   
Geography:

Oman
Coordinates:
     Recommended::   (19° 20' 0"N, 54° 47' 42"E)

Statistics:
     This is 1 of 2119 approved meteorites from Zufar, Oman (plus 4 unapproved names)
     This is 1 of 3944 approved meteorites from Oman (plus 371 unapproved names)
Proximity search:
Find nearby meteorites: enter search radius (km):

Direct link to this page