It varies - from a few centuries to a few billion years.
But its not a meteor until it hits an atmosphere (a matter of a few seconds to minutes).
Yes,becouse from how big a meteor is in space!
The average growth rate is 0.13 mm a year
It takes 20 years for a folded mountain to form
It would take hundreds of years.
3.8 to 2.5 billion years ago
Probably a few million years. Most likely many years, due to Evolution. :P
Many Years. Many Years.
Magnetite is an extremely rare metal (rock) and can take 459,000 to 23,000,000 years to form.
1 million years
1 million+ Years to be a diamonds... :/
1.
One Billion!
It depends on the meteor.
it takes a delta to form 100 years or more
Many such meteor showers repeat regularly every year, so you can look it up in relevant references. For example, the Wikipedia article "List of meteor showers" lists several.
There are many types of fossilization. Some take a surprisingly few number of years, and others occur over periods of millions of years.
It could take minutes or thousands of years, depending on the rate of cooling.