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Reckling Peak A80205
Basic information Name: Reckling Peak A80205
     This is an OFFICIAL meteorite name.
Abbreviation: RKPA80205
This meteorite may also be called Reckling Peak 80205 (RKP 80205) in publications.

Observed fall: No
Year found: 1980
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 53.8 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 5(1)  (1982)  H3
Meteoritical Bulletin:  MB 76  (1994)  H3.8
NHM Catalogue:  5th Edition  (2000)  H3.8
MetBase:  v. 7.1  (2006)  H3.8
Recommended:  H3.8    [explanation]

This is 1 of 78 approved meteorites classified as H3.8.   [show all]
Search for other: H chondrites, H chondrites (type 3), Ordinary chondrites, and Ordinary chondrites (type 3)
Writeuphelp
Writeup from AMN 5(1):

Sample No.: RKPA80205

Location: Reckling Peak

Field No.: 1090

Weight (gms): 53.8.

Meteorite Type: H3 Chondrite

 

Physical Description: Roberta Score

Exterior weathering did not obliterate the clastic nature of this unequilibrated ordinary chondrite. Numerous chondrules can be seen on the two fracture surfaces while dull brownish-black fusion crust covers the remainder of the meteorite. Several irregular shaped, white clasts as large as 0.5 cm were revealed when this stone was chipped, as were numerous other inclusions in the medium to dark gray matrix. The 1 mm thick weathering rind showed that this meteorite is only moderately weathered. Dimensions: 4 x 2.5 x 3 cm

 

Petrographic Description: Brian Mason

The section shows a closely packed mass of chondrules (0.2 - 2.4 mm diameter), chondrule fragments, and irregular crystalline aggregates, with interstitial nickel-iron and troilite and small amount of dark fine-grained matrix. A considerable variety of chondrules is present; many are granular to porphyritic olivine with transparent to turbid intergranular glass; others consist of granular polysynthetically twinned clinopyroxene with or without olivine, fine-grained pyroxene, or barred olivine. Minor brown limonitic staining is present throughout the section. Microprobe analyses show olivine ranging in composition from Fa17 to Fa20, with a mean of Fa18; the pyroxene is low-calcium (CaO 0.1-0.2%) clinobronzite, ranging in composition from Fs5 to Fs13, with a mean of Fs8. This range of composition, together with the presence of glass, indicates type 3, and the composition of the olivine and considerable content of nickel-iron suggests H group; the meteorite is therefore tentatively classified as an H3 chondrite.

Data from:
  MB76
  Table 2
  Line 5393:
Mass (g):53.8
Class:H3.8
Weathering grade:B
Fayalite (mol%):17-20
Ferrosilite (mol%):5-13
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° 12' 26"S, 158° 29' 37"E)
Note: the NHM and MetBase coordinates are 21.2 km apart

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