header
  MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 14 Oct 2020
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:
Include past classifications in search
Limit to approved meteorite names
Search text:  
Sahara 03505
Basic information Name: Sahara 03505
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2003
Country: (Sahara)
Mass:help 65 g
Classification
  history:
Meteoritical Bulletin:  MB 91  (2007)  Iron-ung
Recommended:  Iron, ungrouped    [explanation]

This is 1 of 130 approved meteorites (plus 1 unapproved name) classified as Iron, ungrouped.   [show all]
Search for other: Iron meteorites, Metal-rich meteorites, and Ungrouped irons
Comments: Approved 1 Sep 2006
Writeuphelp
Writeup from MB 91:

Sahara 03505

Sahara

Find: 2003

Iron (ungrouped)

History: A single mass was found in the desert in 2003. The find location is undisclosed.

Physical characteristics: The meteorite weighs 65 g and has no fusion crust.

Petrography: (L. Folco, MNA-SI; M. D’Orazio, DST-PI; P. Rochette, CEREGE) The meteorite consists of cellular/ dendritic Fe,Ni-rich metal crystals set in a matrix dominated by troilite. Fe,Ni-rich metal and troilite occur approximately in a 1:1 volumetric ratio. The primary dendrite arms are up to >1.6 cm long and about 100 µm wide, while the spacing of the secondary arms, perpendicular to the primary, is ~100–150 µm. Abundant spherical droplets (5–100 µm) of anhydrous Fe-, Fe-Na-, and Fe-Mn-Na-K-phosphates are scattered within the troilite. Skeletal crystals of nearly endmember chromite, up to 2.5 mm in maximum length, complete the primary mineral assemblage. Fe,Ni metal is ataxitic and is made of a fine (1–5 µm) aggregate of Ni-rich metal (up to 39.3 wt% Ni), kamacite, and subordinate schreibersite. Veinlets of terrestrial oxidation phases cross-cut the primary minerals and are more abundant toward the external surface.

Geochemistry: Bulk composition: (Analysis by ICP-MS) Co = 4.14, Ni = 90.2 (both mg/g); Cu = 341, Ga = 21.2, Ge = 32.5, Ir = 3.6, Pt = 7.8 (all µg/g).

Classification: Iron (ungrouped). It is troilite-rich and similar in petrography, mineralogy, and bulk chemistry to the Mount Howe (HOW) 88403 ungrouped iron.

Type specimen: A 13 g specimen is on deposit at MNA-SI. Caillou Noir holds the main mass.

A list of all meteorites recognized from countries and regions within Africa is provided in Table 1.

Data from:
  MB91
  Table 1
  Line 17:
Date:2003
Mass (g):65
Pieces:1
Class:Iron (ungrouped)
Classifier:L. Folco, MNA-SI; M. D’Orazio, DST-PI; P. Rochette, CEREGE
Type spec mass (g):13
Type spec location:MNA-SI
Main mass:Caillou Noir
Institutions
   and collections
CEREGE: CEREGE BP 80 Avenue Philibert, Technopole de l'Arbois 13545 Aix-en-Provence Cedex 4 France, France (institutional address; updated 29 Oct 2018)
DST-PI: Dipartimento di Scienze della Terra, Università di Pisa, Via S. Maria 53, 56126 Pisa, Italy (institutional address; updated 17 Oct 2011)
MNA-SI: Museo Nazionale dell'Antartide, Università di Siena, Via Laterina 8, I-53100 Siena, Italy; Website (institutional address; updated 13 Dec 2011)
Caillou Noir: Caillou Noir 100 Chemin des Campenes, 74400 Chamonix, France; Website (private address)
Catalogs:
References: Published in Meteoritical Bulletin, no. 91, MAPS 42, 413-466 (2007)
Find references in NASA ADS:
Find references in Google Scholar:
Geography: 
Coordinates:Unknown.

Statistics:
     This is 1 of 1036 approved meteorites from (Sahara) (plus 1 unapproved name)

Direct link to this page