Ultimate campaign resource question.

[Psi51]

By the rules a hex with a resource when claimed adds +1 to economy and then then developed (mine, quarry or sawmill) all of the benefits are increased by one.

Does this mean a developed gold resource (mine) adds +3 economy and +2bp per turn
and a gold resource (quarry) adds +1 economy, +2 stability and +2bp
?
Further does it also derease consumption for farms and fisheries + in the same hex as a mine etc?

For a possible total of +3 econ, +2bp, -5 consumption in one hex ?

[Dalias]

Yes. You can increase this further with a Foundry in one of your settlements.

[Chemlak]

Just make sure you're obeying the terrain requirements: this can only be done in a desert or hill hex that has a coastline or river in it.