Mimas: surface geology through "false colors" (Herschel Crater)

Herschel Crater, a 140-Km-wide (about 88 miles) impact feature with a prominent central peak, is visible in the upper right of each image. The unusual bluer materials are seen to broadly surround Herschel Crater. However, the bluer material is not uniformly distributed in and around the Crater. Instead, it appears to be concentrated on the outside of the Crater and more to the West than to the North or South.
The origin of the color differences is not yet understood. It may represent ejecta material that was excavated from inside Mimas when the Herschel impact occurred.
The bluer color of these materials may be caused by subtle differences in the surface composition or the sizes of grains making up the icy soil.
The images were obtained when the Cassini spacecraft was above 25°South, 134° West latitude and longitude.
The Sun-Mimas-spacecraft angle was 45° and North is at the top.