| MetSoc Home Publications Contacts |
|
||
|
||
| Allan Hills A81003 | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Basic information | Name: Allan Hills A81003 This is an OFFICIAL meteorite name. Abbreviation: ALHA81003 This meteorite may also be called Allan Hills 81003 (ALH 81003) in publications. Observed fall: No Year found: 1981 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  10.1 g | ||||||||||||||||||||||||
| Classification history: |
This is 1 of 6 approved meteorites classified as CV3-an. [show all] Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CV chondrites, and CV-CK clan chondrites | ||||||||||||||||||||||||
| Writeup |
Writeup from AMN 6(1):
Sample No.: ALHA81003 Location: Allan Hills Field No.: 1228 Weight (gms): 10.1 Meteorite Type: C3V Carbonaceous Chondrite
Physical Description: Roberta Score One small patch of fusion crust remains on this clastic carbonaceous chondrite. Abundant irregular shaped white inclusions dot the otherwise black surface. Few of the inclusions are oxidated. Metal was noted. Dimensions: 2.5 x 2.0 x 1.5 cm.
Petrographic Description: Brian Mason The section shows numerous chondrules up to 3 mm across and irregular crystalline aggregates up to 2 mm in maximum dimension set in a minor amount of dark brown to black semi-opaque matrix. The chondrules and aggregates consist mainly of olivine with some polysynthetically twinned pyroxene. Trace amounts of nickel-iron are present as minute grains. Sulfide is present in minor amount, finely dispersed throughout the section. Microprobe analyses of chondrule's olivine show a wide composition range: Fa0-40, mean Fa8; the matrix consists largely of fine-grained iron-rich olivine, Fa40-60. Pyroxene in the chondrules is clinoenstatite, mostly near Fs1, but with occasional Fe-rich grains. The meteorite is classified as a C3V chondrite. | ||||||||||||||||||||||||
| Data from: MB76 Table 2 Line 526: |
|
||||||||||||||||||||||||
| 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 43856 approved meteorites from Antarctica (plus 3802 unapproved names) | ||||||||||||||||||||||||
| Proximity search: | |||||||||||||||||||||||||