Kimberlite is what geologists call "ultrabasic" rock because it does not contain quartz or feldspar. Those are the two most common rock-forming minerals.
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because diamond and other minerals found in kimberlites can form only under very high pressures
Rose quartz is formed when a small amount of iron is incorporated into a pure quartz (SiO2) matrix. The inclusion of iron (Fe2O3) in many minerals s responsible for the colors that are observed. Iron also turns quartz into Amethyst.
no it is not accually
The class of minerals called carbonates contain carbon and oxygen. One of the most common carbonate minerals is calcium carbonate, commonly called calcite.
Silica sand is the major component of glass (quartz).