* Astronomy

Members Login
Username 
 
Password 
    Remember Me  
Post Info TOPIC: New Halfa meteorite


L

Posts: 131433
Date:
RE: New Halfa meteorite
Permalink  
 


Title: Studies on New Halfa Meteorite
Author: Abdu, Y.A.M.

Mossbauer spectroscopy in the temperature range (295 deg K - 4.2 deg K), electron microprobe, and X-ray diffraction (XRD) measurements have been carried out for the investigation of a Sudanese meteorite, named New Halfa, from a new fall. The specimen contains well defined chondrules which consist mainly of radiating orthopyroxene and olivine. The XRD and the microprobe analysis show the presence of the silicate phases (olivine and pyroxene), iron sulphide (troilite), and Fe-Ni alloys (kamacite and taenite).

Read more



__________________


L

Posts: 131433
Date:
Permalink  
 

New Halfa
Atbara Province, Kassala, Sudan
Fell 1994 November 8, 5:30 local time
Ordinary chondrite (L4, S3)

The fall occurred near village No. 9, 15 km NE of New Halfa and was witnessed by Khalil Mohamed Khalil and Ibrahim Hamed from this village. Seven larger specimens, ranging from 5 kg to 100 g, and many small ones were collected by the Geological Research Authority of the Sudan. The total recovered mass was ~12 kg. Classification and analysis: olivine Fa23.5; pyroxene Fs19.4; light/dark structure and blackveins; M. Schliestedt, Institute of Mineralogy, University of Hannover, D-30167 Hannover, Germany, and R. Bartoschewitz, Lehmweg 53, D-38518 Gifhorn, Germany. The main mass is located at the Geological Research Authority of the Sudan, Kharthoum. Research specimen and information: R. Bartoschewitz.

Source



__________________


L

Posts: 131433
Date:
Permalink  
 

The New Halfa (L4) meteorite fell in Ash Sharqiyah, Sudan, on the 8th November, 1994.
A total mass of 12 kg was recovered.

15° 22'N, 35° 41'E



__________________
Page 1 of 1  sorted by
 
Quick Reply

Please log in to post quick replies.



Create your own FREE Forum
Report Abuse
Powered by ActiveBoard