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Can marble scrap glass?
Marble, CaCO3 will not usually scratch glass, but maybe a very soft glass. Marble has a hardness of 3 to 4, whereas glass is 4.5 to 6. (in a relative hardness scale.)
What does marble metemorphosize from?
Limestone/chalk. Limestone has been subjected to heat and/or pressure, it metamorposes into marble. Both limestone and marble are calcium carbonate (CaCO3). Its just that the internal physical structure of limestone is altered.
How much pressure is needed to create limestone?
Limestone is primarily formed from the accumulation of calcium carbonate (CaCO3) through biological processes and sedimentation, rather than from high pressure. However, geological processes that contribute to the formation of limestone can involve pressures of around 3000 to 5000 psi (pounds per square inch) over millions of years, which can cause the compaction and cementation of sediments. This pressure is typically associated with the burial of sediments over time rather than a direct requirement for limestone formation.
