sol 72 OM RGBOU of fiber:

with link to full animation.
Yet another way to combine images. The brightness of an RGB was replaced by the O ( ambient )and U ( ultraviolet ) brightness exposures.
The net effect is that UV florescent features "brighten up" in the animation.
OK, the 256^2 question: Is the fiber Martian -- or an Earth hitchhiker?
IF if is Martian then what kind of fibers ( other than bioligical ) glow in UV illumination?
Naaah. The "clean room" just wasn't very clean.
You know, we really, really, need a "before sampling" tag in the metadata.