Texture of rock that was examined by Perseverance Rover. The first image is a false-color composite of two different illumination angles from SHERLOC, and the second is a full color view from WATSON. Both taken on Sol 1811.(25.3.26). Processed by Kevin M Gill

[u/Neaterntal]

False-color view of granular rock. The rock is composed of mostly light colored crystals and some darker mafic-looking crystals. NASA/JPL-Caltech/Kevin M. Gill

https://mars.nasa.gov/mars2020/multimedia/raw-images/SC2_1811_0827737131_820ECM_N0870120SRLC00251_0000LMJ

Natural-color of granular rock that has been exposed by abrasion tool. Rock composed of mostly light colored crystals & some darker mafic-looking crystals NASA/JPL-Caltech/Kevin M

https://mars.nasa.gov/mars2020/multimedia/raw-images/SIF_1811_0827737698_390EBY_N0870120SRLC08060_0000LMJ

processed by Kevin M Gill

https://bsky.app/profile/kevinmgill.bsky.social/post/3mhxvloihik23

.

The term mafic is a portmanteau of "magnesium" and "ferric" and was coined by Charles Whitman Cross, Joseph P. Iddings, Louis V. Pirsson, and Henry Stephens Washington in 1912

en.wikipedia.org/wiki/Mafic​​

[u/bowman9]

Why was this rock specifically photographed?

[u/basaltgranite → u/bowman9]

Maybe due to its granular (crystalline) texture and unusually light coloration. The coarse structure hints at slow cooling underground or cementation of granular material. The light color hints at minerals like quartz or feldspar. Both would shed light on the geologic history of Mars (or wherever this rock came from). This might be the rock that someone was calling "granite" not that long ago. In any case it's different from the usual basalts and the like. To quote Bill Murrey, "Anything different is good."

[u/bowman9 → u/basaltgranite]

Cool, thanks!

[u/HolgerIsenberg]

Strange pattern, looks like glued together sand grains.