Presentation :
Silica dioxide SiO2.
Crystal whose growth stopped and then continued a few million years later and which kept the trace of this stopping. Sometimes layers of various mineral...
Presentation :
Silica dioxide SiO2.
Crystal whose growth stopped and then continued a few million years later and which kept the trace of this stopping. Sometimes layers of various mineral...
Presentation :
Silica dioxide SiO2.
Crystal whose growth stopped and then continued a few million years later and which kept the trace of this stopping. Sometimes layers of various mineral...
Presentation :
Names) :
Quartz Brandenberg.
Etymology:
Takes its name from the locality where it is extracted, the Brandenberg region in Namibia which is its only known pla...
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