| MetSoc Home Publications Contacts |
|
||
|
||
| Lewis Cliff 87006 | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Basic information | Name: Lewis Cliff 87006 This is an OFFICIAL meteorite name. Abbreviation: LEW 87006 Observed fall: No Year found: 1987 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass:  270 g | ||||||||||||||||||||
| Classification history: |
This is 1 of 3 approved meteorites classified as Mesosiderite-A. [show all] Search for other: Class A mesosiderites, Mesosiderites, and Metal-rich meteorites | ||||||||||||||||||||
| Comments: | Field number: 4714 | ||||||||||||||||||||
| Writeup |
Writeup from AMN 11(2):
Sample No.: LEW87006 Location: Lewis Cliff Weight (g): 269.5 Field No.: 4714 Dimensions (cm): 5.5 x 6 x 3.5 Meteorite Type: Mesosiderite
Macroscopic Description: Roberta Score Dull, black fusion crust remains as small patches over most of the exterior. Some regmaglypts are present. Several large pyroxene grains are obvious on the exterior of this specimen. The matrix is fine-grained and beige in color. Pyroxene inclusions are numerous, as are sulfides/metal.
Thin Section (,2) Description: Brian Mason The section shows about 30% of large grains (up to 2 mm) of nickel-iron in a granular matrix of pyroxene with a little plagioclase. Pyroxene grains are up to 1.2 mm across, but many appear to have been deformed to a mosaic of tiny granules. Moderate weathering is indicated by rusty staining around metal grains. Pyroxene composition is fairly uniform, Wo3Fs36, with minor variation in CaO content (1.2-3.1%); one grain of augite, Wo39Fs17, with 1.6% Al2O3, was analyzed. Plagioclase composition is An89-94. The meteorite is a mesosiderite. | ||||||||||||||||||||
| Data from: MB76 Table 2 Line 3584: |
|
||||||||||||||||||||
| Catalogs: |
| ||||||||||||||||||||
| References: | Published in Antarctic Meteorite Newsletter 11(2) (1988), JSC, Houston Published in Meteoritical Bulletin, no. 76, Meteoritics 29, 100-143 (1994)
| ||||||||||||||||||||
Geography:
|
Statistics: This is 1 of 40719 approved meteorites from Antarctica (plus 4494 unapproved names) | ||||||||||||||||||||
| Proximity search: | |||||||||||||||||||||