View Full Version : Blueberrys.....anyone?

2005-Mar-21, 08:02 AM
Can anyone give me the story,Im afraid to ask Hoagland and his WOO WOO gang. :D

2005-Mar-21, 08:34 AM
Martian Blueberry = millimeter sized hematite pebble.

2005-Mar-21, 08:58 AM
Ok. :o

Any idea what they are?

2005-Mar-21, 09:03 AM
From the JPL MER Factsheet (PDF) (http://www.jpl.nasa.gov/missions/mer/merfactsheet.pdf):

The rover discovered BB-size gray spheres embedded in the rock like blueberries in a muffin. These spherules are also plentiful in the soil of the area, apparently set loose when erosion wore away softer rock material around them. They contain hematite, the mineral whose detection from orbit had made Meridiani a compelling landing site. Spectrometers on the rovers found that the outcrop is rich in sulfate-salt minerals, evidence that the rock had been drenched with salty water. The spherules are distributed throughout the rocks, rather than only in particular layers. This observation contributed to a conclusion that they are concretions, another sign of mineral-rich water soaking through the rocks.

2005-Mar-21, 04:01 PM
Space Bunny poop.

Van Rijn
2005-Mar-22, 05:21 AM
Heh. Hematite is a common mineral on earth. The "blueberries" tell us some interesting things about martian geology (or aresology), and it is definite there was water there at one time. No aliens required.