bleach spot

bleach spot

[′blēch ‚spät]
(geology)
A green or yellow area in red rocks formed by reduction of ferric oxide around an organic particle. Also known as deoxidation sphere.
References in periodicals archive ?
The carpet was mustard-colored shag with bleach spots, unit air-conditioners had leaked down the walls, the ancient windows and sliding doors were corroded and the kitchen was a plastic box covered in white laminate," says Mignone.