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Reckling Peak A79002
Basic information Name: Reckling Peak A79002
     This is an OFFICIAL meteorite name.
Abbreviation: RKPA79002
This meteorite may also be called Reckling Peak 79002 (RKP 79002) in publications.

Observed fall: No
Year found: 1979 or 1980
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 204 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 4(1)  (1981)  L6
Meteoritical Bulletin:  MB 76  (1994)  L6
NHM Catalogue:  5th Edition  (2000)  L6
MetBase:  v. 7.1  (2006)  L6
Recommended:  L6    [explanation]

This is 1 of 11460 approved meteorites (plus 6 unapproved names) classified as L6.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Writeuphelp
Writeup from AMN 4(1):

Sample No.: RKPA79002

Location: Reckling Peak

Field No.: 1201

Weight (gms): 203.6

Meteorite Type: L6 Chondrite

 

Physical Description: Roberta Score

Dull black fusion crust covers parts of three surfaces. One surface is highly polished in the areas where the fusion crust is. Clasts as large as 3 mm in diameter are visible on the exterior and are identical to those seen in RKPA79001. The surface devoid of fusion crust has weathered to brownish-yellow and reddish-brown color. These areas are rough in texture. The interior matrix is whitish-gray in color with oxidation haloes scattered throughout. A small weathering rind was noted. RKPA79001 and RKPA79002 may be pieces of a single meteorite. Dimensions: 8.5 x 5.5 x 3.5 cm.

 

Petrographic Description: Brian Mason

Chondrules are sparse and poorly defined, tending to merge with the granular groundmass, which consists largely of olivine and pyroxene, with minor amounts of maskelynite, nickel-iron, and troilite; accessory chromite was noted. Veins up to 2 mm thick of fine-grained material appear to contain ringwoodite and majorite. The meteorite is somewhat weathered, with brown limonitic staining in association with nickel-iron grains. Microprobe analyses give the following composition: olivine, Fa24; pyroxene, Fa20; the maskelynite has CaO (2.3%) appropriate to oligoclase composition, but Na2O is low and variable (3.6-6.9%). The meteorite is classified as an L6 chondrite.

Data from:
  MB76
  Table 2
  Line 5380:
Mass (g):203.6
Class:L6
Weathering grade:B
Fayalite (mol%):24
Ferrosilite (mol%):20
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 4(1) (1981), 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° 16'S, 159° 15'E)

Statistics:
     This is 1 of 40719 approved meteorites from Antarctica (plus 4494 unapproved names)
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