|
Unlike marble, granite is not a calcite based stone and is not generally vulnerable to acids. However, some stones, even though they are marketed as granite, may in fact have calcium in their makeup. Furthermore, there is one acid that will severely etch, pit and dull a polished granite surface. This acid is known as Hydrofluoric acid(HF) and is found in many rust removers. If you have experienced etching on granite surfaces you may want to check the label and see if it contains Hydrofluoric acid. If it does, the granite may need to be repaired. CALCITE
A common crystalline form of natural calcium carbonate, CaCO3, it is the main mineral composing most limestones and geological marbles. Also called calcspar ETCHING
Occurs when stone is eaten (or neutralized) by an acid. It often looks like and is mistaken for a watermark. GRANITE
A very hard, crystalline, igneous rock, gray to pink in color, composed of feldspar, quartz, and lesser amounts of dark Ferro magnesium materials. Black ’granites’ are similar to true ’granites’ in structure and texture, but are composed of different minerals MARBLE
A metamorphic crystalline rock composed predominantly of crystalline grains of calcite, dolomite, or serpentine, and capable of taking a polish POLISHED
The finest and smoothest finish available in stone, generally only possible on hard, dense materials. Or, a glossy finish which brings out the full color and character of the stone
|
Related Q&A's 
Marble Slab
Viewed 911 times since Thu, Feb 5, 2009
|
Add Comment
Subscribe to Article
Print Article
Email Article to Friend
Export to PDF
Export to MS Word
Tweet This Article
Digg It
Stumble Upon
Del.icio.us