" George" wrote
Yes the spheres were pressed below the soil surface. That does not
necessarily mean that the hematite originated from the spheres. Why? Also
note that the uppermost topsoil itself was disturbed. In addition, and
spectral analysis of the rock outcrop from which the spheres apparently
orginated was very low in hematite.

The relative cross-section of the spherules in the matrix facing the camera
is about 2%. They are much more concentrated on the ground, particularly in
oblique views.

The spherules tend to come out bluish when visible RGB images are combined,
leading to the moniker "blueberries.: It's interesting to compare such a
composite to the hematite map produced by the TES.

http://www.copperas.com/astro/spheres_hem.jpg

The more red areas in the right image (hematite) tend to correspond to the
more blue areas in the left image (spherules). Conclusion: spherules =
hematite.

Let's wait until they conduct the trenching and report on
their analytical results before we all make such pronouncements, shall
we?

Now what fun would that be?

Joe