Presentation :
Names) :
Quartz*: Rock crystal.
Etymology:
Quartz: From German Quarz | Rock crystal: From the Greek krystallos = ice coming from the belief of ice hardened foreve...
Presentation :
Names) :
Quartz*: Rock crystal.
Etymology:
Quartz: From German Quarz | Rock crystal: From the Greek krystallos = ice coming from the belief of ice hardened foreve...
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 :
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...
