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Reckling Peak 86700
Basic information Name: Reckling Peak 86700
     This is an OFFICIAL meteorite name.
Abbreviation: RKP 86700
Observed fall: No
Year found: 1986
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 424 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 11(1)  (1988)  L3
Meteoritical Bulletin:  MB 76  (1994)  L3.0/3.9
NHM Catalogue:  5th Edition  (2000)  L3.0/3.9
MetBase:  v. 7.1  (2006)  L3.0-3.9
Antarctic Meteorite Newsletter:  AMN 33(1)  (2010)  L3.0-3.9
Recommended:  L3.0-3.9    [explanation]

This is the only approved meteorite classified as L3.0-3.9.
Search for other: L chondrites, L chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Writeuphelp
Writeup from AMN 11(1):

Sample No.: RKP86700

Location: Reckling Peak

Weight (g): 424.1

Field No.: 3403

Dimensions (cm): 9x5x5

Meteorite Type: L3 Chondrite

 

Macroscopic Description: René Martinez

Brown fusion crust which is spotted with oxidation haloes covers 90% of this specimen. The interior surfaces are dark gray with black inclusions as large as 2 mm in diameter. Oxidation is heavy along interior fractures.

 

Thin Section (.7) Description: Brian Mason

The section shows a close-packed mass of chondrules (0.6-2.4 mm across) and irregular granular aggregates. Some of the chondrules have dark rims consisting largely of fine-grained troilite. The sparse matrix is fine-grained, with a small amount of coarser nickel-iron and troilite scattered throughout. A notable variety of chondrule types is present; many are granular or porphyritic olivine and olivine-pyroxene with transparent to turbid interstitial glass. The pyroxene is polysynthetically twinned clinobronzite. Brown limonitic staining pervades the section. Microprobe analyses show olivine ranging in composition from Fa17 to Fa27, with a mean of Fa23 (CV FeO is 9.3); pyroxene compositions range from Fs14 to Fs23. The meteorite is an L3 chondrite (estimated L3.9); it resembles RKPA80256, and the possibility of pairing should be considered.

Data from:
  MB76
  Table 2
  Line 5456:
Mass (g):424.1
Class:L3.0/3.9
Weathering grade:B
Fayalite (mol%):17-27
Ferrosilite (mol%):14-23
Catalogs:
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References: Published in Antarctic Meteorite Newsletter 11(1) (1988), 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' 28"S, 158° 38' 53"E)
Note: the NHM and MetBase coordinates are 16.2 km apart

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