MetSoc Home            Publications            Contacts  
Search the Meteoritical Bulletin Database
Last update: 19 Jul 2024
Search for: Search type: Search limits: Display: Publication:
Text help
Starts with
Sounds like
Falls  Non-NWAs
What's new
  in the last:
Limit to approved meteorite names
Search text:  
Basic information Name: Sericho
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2016
Country: Kenya
Mass:help 2.8 t
Meteoritical Bulletin:  MB 106  (2018)  Pallasite
Recommended:  Pallasite    [explanation]

This is 1 of 81 approved meteorites classified as Pallasite.   [show all]
Search for other: Metal-rich meteorites, Pallasites
Comments: Approved 3 Aug 2017
Revised 27 Feb 2021: corrected year
Writeup from MB 106:

Sericho        1°5’41.16"N, 39°6’8.30"E

Eastern, Kenya

Find: 2016

Classification: Pallasite

History: In 2016, two brothers were searching for their camels and came across several large, dense stones west of the village of Habaswein and south of Sericho, Kenya. There are no rocks in this area, so they decided they were meteorites. They spent several weeks collecting them with engine hoists and moving them to their homes in Habaswein. Though recognized as meteorites in 2016, the masses had been known to camel-herders for decades. One village elder said that as a child, he and his brothers would play on top of the stones. In early January 2017, Michael Farmer received an email showing a photo of “giant pallasite” weighing 107 kg. He traveled to Nairobi and purchased this stone. Two weeks later he returned to Kenya with Moritz Karl and traveled to Habaswein. Here they were shown more than one ton of specimens stacked in the courtyards of two house compounds. To date, more than 2800 kg has been found.

Physical characteristics: To date, masses ranging from <1 to 500 kg have been found in a strewnfield >45 km long, starting several km west of Habaswein and south of Sericho in Isiolo County. The smaller pieces were found nearer to Habaswein, but still in Isiolo County. The villagers continue to find pieces, mostly on the surface. The majority of the pieces are >50 kg. The meteorites found on the surface show minimal weathering, with patches of fusion crust on the metal. Most stones are blocky, exhibiting a few broad regmaplypts. Several flight-oriented specimens were found, including a 129 kg and two 16 kg stones.

Petrography: Slices from several stones show similar metal/olivine ratio, averaging near 70 areal% olivine and <1 areal % chromite. One 15 × 21 cm slice shows regions with ~95 areal% olivine. Olivine grains are largely rounded, less commonly euhedral, and gemmy green to orange. Grains are typically 0.5 to 1 cm across, though a few range up to 4 cm. One slice shows a 5-cm cruciform-shaped chromite. Metal is dominated by swathing kamacite around the olivine, with pockets of dark-etching plessite. Rare metal-rich regions show well-developed Widmanstätten pattern. Accessory troilite and schreiberstite. No large metal veins or metallic masses have been seen.

Geochemistry: (L. Garvie, A. Wittmann, D. Schrader, ASU) Olivine Fa12.3±0.1, FeO/MnO=57.4±5.4, Cr2O3=0.03±0.01, n=15; kamacite Ni=7.1±0.6 wt%, Co=0.81±0.02 wt%, P=0.06±0.02 wt%, n=17; and schreibersite (Fe1.51Ni1.45Co0.01)P, n=3.

Classification: Pallasite, low weathering.

Specimens: 48 g at ASU; >1600 kg with Michael Farmer, Thomas Strope, and Moritz Karl; 143 g, 129 kg, and 23 kg stones at the Maine Mineral and Gem Museum; 1344 g at MNHNP (two stones of 694 and 650 g); another 82 kg with an anonymous owner.

Data from:
  Table 0
  Line 0:
Place of purchase:Habaswein
Mass (g):2800 kg
Weathering grade:low
Fayalite (mol%):12.3±0.1
Classifier:L. Garvie, A. Wittmann, D. Schrader, ASU
Type spec mass (g):48
Type spec location:ASU
Main mass:Michael Farmer, Moritz Karl, Thomas Strope
Comments:Submitted by L. Garvie
   and collections
ASU: Center for Meteorite Studies, Arizona State University, Tempe, Arizona 85287-1404, United States; Website (institutional address; updated 14 Jan 2012)
MNHNP: Museum National d'Histoire Naturelle, IMPMC-CP52, 57 rue Cuvier, 75005 Paris, France, France; Website (institutional address)
Strope: 421 Fourth Street, Glen Dale, WV 26038, United States; Website (private address)
References: Published in Gattacceca J., Bouvier A., Grossman J., Metzler K., and Uehara M. (2019) Meteoritical Bulletin, no. 106. Meteorit. Planet. Sci. 54 in press.
Find references in NASA ADS:
Find references in Google Scholar:
Photos from the Encyclopedia of Meteorites:
Ahmad Fairuz   
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Albert Calafell   
An R•J      
Andreas Möller         
Antonello Petriccione      
Brad Sampson   
chen wang               
Christophe PICQ   
Cyril Chedoz               
Denis gourgues               
Domjan Svilkovic   
Don Cuarzo   
Eduardo Baitello   
Emanuel Foglietto   
Emmanuel Nicolaides   
Eric Escrich                                 
Francois Pacaud      
Guchen Chen   
Jia He Zhang   
Jim Dewantara   
Jingyu Tan   
KD Meteorites   
Kenneth Alvarez Castillo      
Leandro Macedo Bonfim   
McKinley Collection   
Mike Markowitz      
Niño Nikkolo Espedilla      
Philippe Geniez   
Piotr gural100   
Qi Lv         
Ricard Mocholí   
Robert Smart   
Russ Opdahl                  
Ryan Upchurch      
Stefano Prosperi                     
Volker Heinrich   
Wojciech Moscinski   
Ziyao Wang         

     Recommended::   (1° 5' 41"N, 39° 6' 8"E)

     This is 1 of 2 approved meteorites from Eastern, Kenya
     This is 1 of 14 approved meteorites from Kenya (plus 1 unapproved name)
Proximity search:
Find nearby meteorites: enter search radius (km):

Direct link to this page