Evolutionary Geologists have used Zicrons as a way of dating, refering to them as "time capsules". But recently inclusions inside the Zicrons have shown a different date. In Jack Hills, Australian geologists dating 7,000 zicrons, which were to be beteween supposedly 2.6 billion & 3 billion years old came up at around 800 million supposed yaers old. The impact of "outside influences" were to blame.
In other words their dating techniques are innacurate-and way off....Of both the nearly 3 billion, as well as the 800 million year range are off. Since the world isn't even close to either age. But the point there-their dating techniques are very, very flawed and unreliable....Zicrons are a nesosilicate mineral, ZrSiO4.
http://news.sciencemag.org/sciencenow/2011/11/earths-time-capsules-may-be-flaw-1.html
For in six days the LORD made heaven and earth, the sea, and all that in them is, and rested the seventh day: Exodus 20:11