Volcanic rocks often have a vesicular texture caused by voids left by volatiles trapped in the molten lava. Pumice is a highly vesicular rock produced in explosive volcanic eruptions.
The Dodge Nitro is available as a sport utility. Inventory prices for the 2011 Nitro range from $6,585 to $16,609. It gets EPA-estimated 18-19 MPG combined.
  The base price of a new Mini Cooper is $18,500. The Cooper S (turbocharged) starts at $21,950. The extensive option packages available can easily exceed $30,000, and if â¦ you choose every available option, you can even get close to $50,000.