I have a splotchy irregular stain on my Black polished natural granite or polished natural
marble bathroom counter of my sink.
Apparently, I "placed" a cleaning cloth on the sink counter, that I was using to clean the bathroom with. I thought it just had cleaning soap and maybe even a little baking soda, [like Soft Scrub], in it. My feeling now is that somehow, what ever I was using, it must have had some bleach in it.
I didn't think I left it there that long, [no more than 1 hour], but the next morning, there was an irregular white splotchy stain in the Black granite/
marble. I have not tried to clean it with anything but soap or regular cleaners, [none of which have any bleach in them].
How can I remove the white stain? Is it removable? Or do I have to try and add some sort of black stain, dye, pigment, or black permanent marker to the stain to cover it over?
The Black granite/
marble is really made up of a multitude of randomly placed black amoeba type spots on a Very Dark Grey background that is full of silver specs. The irregular "bleach" mark is very small, about two inches and 1/2 long and about 1/2 inch wide.
I never sealed or did anything with the counter top when I received it.
If more information, or even a picture is necessary I would be happy to provide it.
Thanks for all your assistance.
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 | | Marble | MARBLE: CHARACTERISTICS
This standard includes general information on the characteristics
and common uses of marble and identifies typical problems
associated with the material.
INTRODUCTION
Marble is an extremely hard, metamorphic stone composed of calcite
(CaCO3). It is formed as a result of the recrystallization of
limestone under the intense pressure and heat of geologic
processes. The effect of this process is the creation of a stone
with a very tight crystalline structure and small but definite
porosity. Because of its structure, marble can take a very high
polish and is a very popular decorative stone for architectural and
sculptural uses. The limited porosity of marble, especially
polished marble, makes it less vulnerable to the leaching effects
of water. Calcium carbonate, however, of which marble is composed,
is highly susceptible to attack by acidic agents. Marble is
readily dissolved by acids, even very dilute acids, however the
actual results of acidic exposure will vary with the nature of the
acid. Chlorides, nitrates, sulfates and other chemical compounds
react differently with marble and produce various by-products,
which have a wide range of solubility and impact on the durability
of marble. For this reason, it is always important to determine
the exact type of pollutants causing marble deterioration.
Marble itself can be of two types, one composed of calcite and the
other of dolomite. Dolomitic marble is much more resistant to acid
attack than calcite marble. The color of marble ranges from the
brilliant white of calcite to black, including blue-gray, red,
yellow and green, depending upon the mineral composition.
TYPICAL USES
Marble has many decorative and structural uses. It is used for
outdoor sculpture as well as for sculpture bases; in architecture
it is used in exterior walls and veneers, flooring, decorative
features, stairways and walkways. The way in which the stone is
used may be a factor in limiting or controlling the severity of
exposure. The use or function of the marble may also affect the
feasibility of applying certain treatments, but type of use is not
the primary factor in the major types of deterioration and damage
to which marble is susceptible. | |  |
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Linear Mode
