Tweak Quark's basalt to match vanilla - not only the textures but also the models, that in 1.12 Quark both raw and smooth basalt are simple blocks while on vanilla they behave like logs (have top and side textures and rotate depending of the placement);
Other option is just "convert" it into blackstone (its almost a 1:1 correspondence with Quark's basalt, except the pavement block);
Well, let's see: