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Hambleton
Basic information Name: Hambleton
     This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: No
Year found: 2005
Country: United Kingdom
Mass:help 17.6 kg
Classification
  history:
Meteoritical Bulletin:  MB 91  (2007)  Pallasite-Main gr
Recommended:  Pallasite, PMG    [explanation]

This is 1 of 52 approved meteorites (plus 1 unapproved name) classified as Pallasite, PMG.   [show all]
Search for other: Main group pallasites, Metal-rich meteorites, and Pallasites
Comments: Approved 25 Sep 2006
Revised 26 May 2009: Revised pallasite classifications
Writeuphelp
Writeup from MB 91:

Hambleton                                           54°1425′′N, 1°1156′′W

Hambleton, North Yorkshire, England, United Kingdom

Find: August 2005

Pallasite (main group)

History: A mass was found beside a forest track by R. and I. Elliott while they were hunting for meteorites, ~2 km south of Hambleton, North Yorkshire, England.

Physical characteristics: One 17.6 kg piece was found. It has a highly weathered exterior with centimeter-size patches of blue weathering products. No fusion crust is present.

Petrography and mineral compositions: (D. Johnson and M. M. Grady, OU; R. Hutchison and C. Kirk, NHM) The meteorite is brittle and easily fragments. It contains ~60 vol% olivine (Fo88.3), ~25 vol% metal, and ~15 vol% sulfide (all irregularly distributed). Olivine ranges in size from ~10 mm in fractured, rounded grains that form mosaics in olivine-rich regions, to angular fragments <0.1 mm set in metal or sulfide where these opaques are dominant. The olivine mosaics have metal and/or sulfide veins along grain boundaries or filling fractures. Metal is largely kamacite, commonly as plessitic intergrowths with taenite, which also forms thin rims with Ni <60 wt%. Sulfides are abnormally abundant for a pallasite and some regions (<5 cm across) are composed almost exclusively of troilite, enclosing minor fragmented olivines. Within olivine and metal, sulfides occur as veins, commonly with Ni-poor centers and Ni-rich rims. Chromite and schreibersite are accessory phases. The outer 1 cm of the mass is terrestrially weathered, with veins of Fe-oxides and patches of a blue phosphate mineral.

Geochemistry: Oxygen isotopic: (I. A. Franchi, PSSRI, OU) δ17O = +1.383, δ18O = +3.029, Δ17O = −0.187 (all ‰).

Classification: Pallasite (main group).

Type specimen: A 1 kg type specimen, 3 slices, and 1 thin section are on deposit at OU. R. Elliott of Fernlea holds the main mass.

Plots: O isotopes:  
Institutions
   and collections
NHM: Department of Mineralogy, The Natural History Museum, Cromwell Road, London SW7 5BD, United Kingdom; Website (institutional address; updated 9 Dec 2011)
OU: Planetary and Space Sciences Department of Physical Sciences The Open University Walton Hall Milton Keynes MK7 6AA United Kingdom, United Kingdom (institutional address; updated 8 Dec 2011)
Fernlea: Rob Elliott, Fernlea Meteorites, Milton of Balgonie, Fife. KY7 6PY, Scotland, United Kingdom; Website (private address)
Catalogs:
Search for specimens in the Smithsonian Institution collection (U.S.):   
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References: Published in Meteoritical Bulletin, no. 91, MAPS 42, 413-466 (2007)
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Photos:
CreditPhotos
Photos from the Encyclopedia of Meteorites:
Don Edwards   
Fernlea Meteorites         
Photos uploaded by members of the Encyclopedia of Meteorites.
    (Caution, these are of unknown reliability)
Alan Mazur   
David Hardy Photo added 20 Oct 2022
Kieron Heard Photo added 20 Oct 2022
Zsolt Kereszty Photo added 20 Oct 2022
Geography:

United Kingdom
Coordinates:
     Recommended::   (54° 14' 25"N, 1° 11' 56"W)

Statistics:
     This is 1 of 15 approved meteorites from England, United Kingdom (plus 13 unapproved names)
     This is 1 of 23 approved meteorites from United Kingdom (plus 23 unapproved names)
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