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 20 most expensive cities in the world to live in revealed: Hamilton in Bermuda tops the rankings with San Francisco and New York close behind. 1  Hamilton, Bermuda, has been revealed as the most expensive city in the world. 2  20 cities with the highest cost of living include New York, Sydney and London.