English: Hematite spherules on Mars, nicknamed "blueberries" due to their appearance in false-color photographs. This three-centimeter by three-centimeter (1.2-inch by 1.2-inch) image of the soil target, informally called "Punaluu" after the black sand beaches of Hawaii, was taken by the Mars Exploration Rover Opportunity's microscopic imager during the rover's "Eagle Crater" soil survey. The largest particles are similar to those seen in the crater outcrop. There are also some smaller, more irregular rounded particles that have likely been transported by wind. The Moessbauer spectrometer's study of this target pushed some of the particles into the surrounding fine-grained sand. Microscopic Imager Non-linearized Full frame EDR acquired on Sol 52 of Opportunity's mission to Meridiani Planum at approximately at approximately 13:56:01 Mars local solar time.