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Reckling Peak A80259
Basic information Name: Reckling Peak A80259
     This is an OFFICIAL meteorite name.
Abbreviation: RKPA80259
This meteorite may also be called Reckling Peak 80259 (RKP 80259) in publications.

Observed fall: No
Year found: 1980
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 20.2 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 5(1)  (1982)  E5
Meteoritical Bulletin:  MB 76  (1994)  E5
NHM Catalogue:  5th Edition  (2000)  EH5
MetBase:  v. 7.1  (2006)  EH5
Recommended:  EH5    [explanation]

This is 1 of 7 approved meteorites classified as EH5.   [show all]
Search for other: EH chondrites, Enstatite chondrites, Enstatite chondrites (type 4-7), and Enstatite-rich meteorites
Writeuphelp
Writeup from AMN 5(1):

Sample No.: RKPA80259

Location: Reckling Peak

Field No.: 1292

Weight (gms): 20.2

Meteorite Type: E5 Chondrite

 

Physical Description: Roberta Score

Thin iridescent fusion crust covers most of this stone. The matrix is dark colored and weathered. A small amount of white evaporite deposit is present in the interior of the sample. Dimensions: 2.5 x 1.5 x 1.5 cm

 

Petrographic Description: Brian Mason

Chondrules are area and barely discernable, the meteorite consisting largely of fine-grained enstatite (mean grain size approximately 0.05 mm), with some nickel-iron and troilite. Weathering is very extensive, with much red-brown limonite throughout the section. The silicate material is blackened. by the presence of finely dispersed troilite, probably the result of an episode of severe shock. Microprobe analyses showed that the enstatite is almost pure MgSiO3; with minor amounts of Al2O3 (0.1-0.3%), FeO (0.1-0.5%), and CaO (0.5-0.8%). The meteorite is classified as an E5 chondrite.

Data from:
  MB76
  Table 2
  Line 5446:
Mass (g):20.2
Class:E5
Weathering grade:B/Ce
Ferrosilite (mol%):0-1
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 5(1) (1982), JSC, Houston
Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)
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Geography:

Antarctica
Coordinates:
     Catalogue of Meteorites:   (76° 16'S, 159° 15'E)
     Recommended::   (76° 14' 7"S, 158° 42' 53"E)
Note: the NHM and MetBase coordinates are 14.6 km apart

Statistics:
     This is 1 of 39173 approved meteorites from Antarctica (plus 5051 unapproved names)
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