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 10 Most Expensive States In America. AP. WASHINGTON, June 12 (Reuters) - Life is most expensive for people living in Hawaii, New York and Washington, D.C., and cheapest for those in South Dakota, North Dakota and Mississippi, according to U.S. government data released on Wednesday.