Iron deposits that are embedded in white marble tile especially carrara marble are typically the cause of this type of stain.
Carrara marble with brown veins.
The veins of white himalaya marble can range from gray and brown to slightly purple colored hues all atop the solid white background.
A yellow brownish stain has begun to appear on the marble bench slab.
How to create veins on faux carrara marble using craft paint.
Its homogeneous greyish white base is composed of fine shiny particles.
I have also painting my brown formica kitchen counters to look like carrara marble.
This type is a mid grained pearl white to light grey in color with a fairly regular network of more or less dark grey veins.
If these deposits are exposed to water they can rust and leach through to the surface causing the yellow brown stains.
The veins are thick and dramatic and can range in color from gold to brown to beige to dark gray.
Also called veined white carrara is the second most excavated marble in the apuan alps.
It will help you better visualize what the veins really look like.
Marmo venato veined marble.
Bianco carrara marble as its name suggests comes from the carrara quarries in the tosco emilian apennines.
It started out faint has gotten brighter and appears to be growing.
To help make veining easier buy a marble tile.