| MetSoc Home Publications Contacts |
|
||
|
||
| Allan Hills A81039 | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Basic information | Name: Allan Hills A81039 This is an OFFICIAL meteorite name. Abbreviation: ALHA81039 This meteorite may also be called Allan Hills 81039 (ALH 81039) in publications. Observed fall: No Year found: 1981 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  206 g | ||||||||||||||||||||
| Classification history: |
This is 1 of 11567 approved meteorites (plus 23 unapproved names) classified as H5. [show all] Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||
| Writeup |
Writeup from AMN 6(1):
Sample No.: ALHA81039 Location: Allan Hills Field No.: 1495 Weight (gms): 205.9 Meteorite Type: H5 Chondrite
Physical Description: Carol Schwarz This specimen consists of two pieces which fit together plus a small (~1.5 cm) piece. The two larger pieces have black pitted fusion crust on all sides but one. The small piece is nearly totally covered with fusion crust. Chipping revealed a light gray matrix with oxidation haloes. A weathering rind has formed along the face where fusion crust is absent. Dimensions: 10 x 4.5 x 4 cm.
Petrographic Description: Brian Mason Chondrules are present, but are poorly defined, their margins tending to merge with the granular groundmass, which consists largely of olivine and pyroxene, with minor amounts of nickel-iron and troilite. Minor weathering is indicated by brown limonitic staining concentrated around metal grains. Microprobe analyses give the following compositions: olivine, Fa19; orthopyroxene, Fs17. The meteorite is classified as an H5 chondrite. | ||||||||||||||||||||
| Data from: MB76 Table 2 Line 562: |
|
||||||||||||||||||||
| Catalogs: |
| ||||||||||||||||||||
| References: | Published in Antarctic Meteorite Newsletter 6(1) (1983), JSC, Houston Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)
| ||||||||||||||||||||
Geography:
|
Statistics: This is 1 of 44543 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||
| Proximity search: | |||||||||||||||||||||
| Also see: |
This lists the most popular meteorites among people who looked up this meteorite.
| ||||||||||||||||||||
| Revision history: |
This lists important revisions made to data for this record.
| ||||||||||||||||||||