Sample Petrographic Description
Sample Number | ALH 84047 |
Newsletter | 9,2 |
Location | Allan Hills |
Field Number | 2041 |
Dimensions (cm) | 2.5 2.0 x 0.8; 1.0 x 1.5 0.8 |
Weight (g) | 4.36 |
Original Classification | C2 Chondrite |
Updated Classification | CM1/2 Chondrite |
Pairing | ALH 83100; ALH 83102; ALH 83106; ALH 84029; ALH 84030; ALH 84031; ALH 84032; ALH 84034; ALH 84035; ALH 84040; ALH 84041; ALH 84042; ALH 84043; ALH 84044; ALH 84045; ALH 84047; ALH 84048; ALH 84049; ALH 84051; ALH 85004; ALH 85106; |
Weathering | |
A/Be | |
Fracturing | |
B | |
Macroscopic Description - Carol Schwarz | |
These carbonaceous chondrite fragments are all fine-grained and black in color. Some of the fragments contain small white inclusions. Salt deposit has formed on most of them. | |
Thin Section Description - Brian Mason | |
These meteorites are C2 chondrites characterized by almost complete serpentinization and can confidently be paired with ALH84029, 84030, 84031, 84032, 84034, 84042, and 84044 (Antarctic Meteorite Newsletter 8(2)); ALH83100 and 83102 are very similar. The major component is a brown to black phyllosilicate matrix enclosing green to pale brown phyllosilicate pseudomorphs of chondrules, inclusions, and mineral grains. Minute grains of calcite are common. Rare grains of forsteritic olivine and clinoenstatite may be present. | |
Reclassification Notes (AMN 45,2) | |
ALH 84047 has similar appearance and location to ALH 83100 and ALH 83102 and so they have been paired. |
Antarctic Meteorite Images for Sample ALH 84047 | ||||
Thin Section Photo(s) : | ||||