Magnetite is an extremely rare metal (rock) and can take 459,000 to 23,000,000 years to form.
Probably a few million years. Most likely many years, due to Evolution. :P
Minerals can take millions to billions of years to form, depending on the specific conditions under which they are created. Factors such as temperature, pressure, and the presence of certain elements all play a role in the formation process.
10,000,000+ years
Volcanoes take many years to form, but it also depends on the type of volcano. A stratovulcano for example exists of multiple layers. This takes many years. Because of an erruption a volcano often collapses or shrinks, so then it takes many years again. A new volcano can also be formed in the crater of an old volcano. Check the link under the related links section for detailed information about volcanoes.
No, they take a lot, lot longer.
Many Years. Many Years.
1 million years
1 million+ Years to be a diamonds... :/
1.
One Billion!
it takes a delta to form 100 years or more
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.
The average growth rate is 0.13 mm a year
Probably a few million years. Most likely many years, due to Evolution. :P
It takes about 13.99 billion years for a galaxy to form.
Minerals can take millions to billions of years to form, depending on the specific conditions under which they are created. Factors such as temperature, pressure, and the presence of certain elements all play a role in the formation process.