Mineral resource classification is the classification of mineral deposits based on their geologic certainty and economic value.
Here's a list of the top 10 most expensive cities in the country, ranked by average monthly rent for a single person: 1. San Francisco, $2,077. 2. New York City, $1,994. 3. Boston, $1,721. 4. Washington, D.C., $1,397. 5. Seattle, $1,288.
The most expensive hotels in the United States. June 19, 2014. Montana is home to the United Statesâ most expensive luxury hotel. A recent survey from Luxury-Hotels.com came to this determination after comparing the rates for the 2014 summer season of all luxury hotels situated in the USA.