I've seen that too - came with the latest update. The quarry can still be used. You can destroy the old site to get rid of the image and message if it bugs you.
Sorry, but I've slept since then...
This is the second new problem I've encountered since the game update last Monday. If my jolly geologist manages to find 2 iron mines with the "Two iron in one" skill, or 2 marbles with the "Two marble in one," one of the mines shows up correctly while the other displays an exhausted mine icon with the marble symbol and the # superimposed over it. It works fine, it's just the wrong graphic.
I'm just wondering if it is depleted or if there is an amount of marble left? ;-) Maybe next maintenance will fix that and give us another confusing feature.
Ravel, this still happens on deposits/mines that have been demolished and then a refresh performed.
I have sent Geos found copper mines but will not let me build on them when click copper mine to place gets nothing tried refresh got to a friends base reloaded game tried all i know
Marble deposits that has been found with "Two Marble in One" -skill are still (after 29.7. maintenance) showing exhausted deposit graphics and text.