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Reckling Peak A80202
Basic information Name: Reckling Peak A80202
     This is an OFFICIAL meteorite name.
Abbreviation: RKPA80202
This meteorite may also be called Reckling Peak 80202 (RKP 80202) in publications.

Observed fall: No
Year found: 1980
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 545 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 4(2)  (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(2):

Sample No.: RKPA80202

Location: Reckling Peak

Field No.: 1036

Weight (gms): 544.5

Meteorite Type: L6 Chondrite

 

Physical Description: Carol Schwarz

Less than 1.5 mm thick, brown to black fusion crust covers the entire specimen except for one small area. The fusion crust is polygonally fractured. White evaporate deposit was visible in some of the fractures after the stone dried overnight in the nitrogen cabinet. Interior material is gray with some oxidation halos. A number of parallel fractures are present. Some weathering has occurred along these cracks. Dimensions: 12 x 5.5 x 5.5 cm.

 

Petrographic Description: Brian Mason

Chondrules are sparse and poorly defined, tending to merge with the granular groundmass, which consists of olivine and pyroxene with minor amounts of maskelynite, nickel-iron, and troilite. Well-preserved fusion crust is present in one edge of the section. A little limonitic staining is present around some of the nickel-iron grains. The section is cut by a dark glassy veinlet, maximum thickness 0.3 mm; clear isotropic material. in this veinlet is tentatively identified as ringwoodite and majorite. Microprobe analyses show olivine (Fa24) and orthopyroxene (Fs20) of uniform composition; the maskelynite has CaO content (2.4%) appropriate to oligoclase composition, but has deficient and variable Na2O content (2.4-5.0%). The meteorite is classified as an L6 chondrite.  This specimen is identical in texture, mineral compositions, and degree of weathering with RKPA78001, 78003, 79001, and 79002, which evidently are all pieces of a single meteorite.

Data from:
  MB76
  Table 2
  Line 5390:
Mass (g):544.5
Class:L6
Weathering grade:Be
Fayalite (mol%):24
Ferrosilite (mol%):20
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 4(2) (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° 15' 3"S, 158° 18' 29"E)
Note: the NHM and MetBase coordinates are 25 km apart

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