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Dhofar 1619
Basic information Name: Dhofar 1619
     This is an OFFICIAL meteorite name.
Abbreviation: Dho 1619
Observed fall: No
Year found: 2007
Country: Oman
Mass:help 6.2 g
Classification
  history:
Meteoritical Bulletin:  MB 99  (2011)  CM2
Recommended:  CM2    [explanation]

This is 1 of 532 approved meteorites classified as CM2.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 2), CM chondrites, and CM-CO clan chondrites
Comments: Approved 4 Jan 2011
Writeuphelp
Writeup from MB 99:

Dhofar 1619 (Dho 1619)        18°40.475’N, 54°26.397’E

Zufar, Oman

Found: 4 March 2007

Classification: Carbonaceous chondrite (CM2)

History: A single, black, fusion-crusted stone was found by MFarmer on March 4, 2007, in the deserts of Oman.

Physical characteristics: One 6.18 g stone (2.5 x 2.5 x 1 cm) in the shape of a concave oriented shield. Fractured, dull-black fusion crust covers most of the stone. Areas without fusion crust and the interior are dark gray to black, composed of a fine-grained matrix with some white, tan and gray chondrules and inclusions. The stone is highly porous.

Petrography: (Laurence Garvie, ASU) Sections show moderately abundant chondrules (to 1 mm), and fine-grained olivine aggregates, mineral fragments (to 0.4 mm, composed mainly of olivine) and sparse CAIs set in a black fine-grained matrix. Metal is rare, occurring mainly as small grains in chondrules. Sulfide and carbonate grains present. Chondrules and mineral fragments are modestly aqueously altered. Chondrules and mineral fragments display well-developed fine-grained rims to 0.3 mm thick.

Geochemistry: (Laurence Garvie, ASU) Most of the chondrule olivines are Fo-rich, with CaO = 0.26 wt% and Cr2O3 = 0.36 wt%. Olivine shows a wide compositional range from Fa0.50-70.06. Pyroxene is rare and is dominated by orthopyroxene Fs0.7-3.36Wo0.39-3.99. One PP chondrules was found with several small augite grains Fs0.94Wo44.22. Oxygen isotopes: (R. Tanaka and D. Rumble, Okayama University at Misasa), (mean of two replicates: δ17O = -2.87‰; δ18O = 3.26‰; Δ17O = -4.59‰).

Classification: Carbonaceous chondrite (CM2).

Specimens: ASU holds 3.321 g, five thin sections and one polished stub.

Data from:
  MB99
  Table 0
  Line 0:
State/Prov/County:Zufar
Date:4 March 2007
Latitude:18°40.475'N
Longitude:54°26.397'E
Mass (g):6.18
Pieces:1
Class:CM2
Weathering grade:minor
Fayalite (mol%):0.5 to 70.1
Ferrosilite (mol%):0.7 to 3.4
Wollastonite (mol%):0.4 to 4.0
Classifier:Laurence Garvie
Type spec mass (g):3.321
Type spec location:ASU
Main mass:ASU
Finder:MFarmer
Comments:Submitted by Laurence Garvie
Plots: O isotopes:  
Institutions
   and collections
ASU: Center for Meteorite Studies, Arizona State University, Tempe, Arizona 85287-1404, United States; Website (institutional address; updated 14 Jan 2012)
MFarmer: Michael Farmer, P.O. Box 86059, Tucson, AZ 85754-6059, United States; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, No. 99, April 2012, MAPS 47, E1-E52 (2012) [published online only]
Find references in NASA ADS:
Find references in Google Scholar:
Geography:

Oman
Coordinates:
     Recommended::   (18° 40' 28"N, 54° 26' 24"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)
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