The images below of ALH84001 progress from the macro (the rock as seen at its Johnson Space Center curatorial site) to the very micro (nanometer scale "fossils" reported by McKay et al (1996) In order, the pictures are:
Row 1: A series of pictures of the ALH84001 rock sample
Rows 2, 3, and 4: Photomicrographs of the carbonate bearing crush zone in ALH84001, as photographed for study at USF. Magnification: Row 2: 32x, Row 3: 80x, row 4: 320x.
Row 5: Detailed, false color SEM image of ALH 84001 carbonate globules, from McKay et al (1996)
Row 6: TEM image of purported "fossils" in ALH 84001 carbonates.
For further insights into rocks through the microscope, check out the following online exercises:
Link to Meteorites under the Microscope.
Link to Terrestrial Rocks under a Microscope.
Link to Shergottite EET79001 Image Gallery.
Link to Mars Pathfinder Image Gallery.
Link to Mars Discussion Page.
Link back to the Moons, Planets... Homepage
Link back to Jeff Ryan's Homepage