Granite
Granite Kitchen Island at GraniteAndMarbleInfo.com

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• Main element that make up marble
• Weathering of Granite
• Granite and Marble conclusion

GRANITE AND MARBLE CONCLUSION

So in conclusion, Granite is slightly soluble in water but less so than Marble, and both are more soluble in acidic water (since the acid has the more free charged particles that bind to the Potassium (K) in the feldspar in granite and CO3 in Marble). The solubility will be greater at higher temperatures also.

In nature the rate of weathering of granite can be up to 5+/-1 cm per 1000 years. But out of this total approximately 95% to 50% of the total is related to mechanical processes such as frost wedging, and sheeting and exfoliating. The approx. rate of chemical weathering in Granite is .0025 mm per year, If there is more acid (Low pH Carbonic acid) the rate will go faster, up to .025mm per year . For Marble the mean vertical-slab surface recession rates are as much as eight times greater for urban/industrial areas (maximum 3.0 mm [100 yr]-1)( 0.3mm/year )than for rural areas (minimum 0.4 mm [100 yr]-1)(.004mm/year)., and shows that even small industrial operations significantly augmented local rates of weathering within several kilometers. Marble stones near short-smokestack industries are significantly more weathered than are those near tall-smokestack, coal-fired electrical power plants.