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Reckling Peak A80239
Basic information Name: Reckling Peak A80239
     This is an OFFICIAL meteorite name.
Abbreviation: RKPA80239
This meteorite may also be called Reckling Peak 80239 (RKP 80239) in publications.

Observed fall: No
Year found: 1980
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 5.6 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 5(1)  (1982)  Ureilite
Meteoritical Bulletin:  MB 76  (1994)  Ureilite
NHM Catalogue:  5th Edition  (2000)  Ureilite
MetBase:  v. 7.1  (2006)  Ureilite
Recommended:  Ureilite    [explanation]

This is 1 of 572 approved meteorites classified as Ureilite.   [show all]
Search for other: Achondrites, Ureilites
Writeuphelp
Writeup from AMN 5(1):

Sample No.: RKPA80239

Location: Reckling Peak

Field No.: 1098

Weight (gms): 5.6

Meteorite Type: Ureilite

 

Physical Description: Roberta Score

Thin patchy fusion crust appears on all surfaces of this achondrite. Areas devoid of fusion crust are crystalline, reddish-brown in color and rough in texture. The interior is black to reddish-brown in color and crystalline (?). Sample has weathered differently than other samples in the Antarctic collection. Dimensions: 2 x 1.5 x 0.5 cm

 

Petrographic Description: Brian Mason

The section shows an aggregate of anhedral grains (0.3-1.5 mm across) of olivine with minor amounts of pyroxene. The grains are rimmed with black carbonaceous material. Trace amounts of troilite and nickel-iron are present, the latter largely altered to translucent brown limonite concentrated along grain boundaries. Microprobe analyses show olivine of uniform composition (Fa16) with notably high CaO content (0.3-0.4%); the pyroxene is a pigeonite of composition Wo5Fs15En81. This meteorite is a ureilite; it appears to be relatively lightly shocked compared to most ureilites.

Data from:
  MB76
  Table 2
  Line 5426:
Mass (g):5.6
Class:Ur
Weathering grade:B
Fayalite (mol%):16
Ferrosilite (mol%):15
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° 13' 34"S, 158° 36' 47"E)
Note: the NHM and MetBase coordinates are 17.5 km apart

Statistics:
     This is 1 of 40753 approved meteorites from Antarctica (plus 4494 unapproved names)
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