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.
1. New York City, New York. New York City leads the pack as the most expensive city in the United States; the city, with a population exceeding 8.3 million, also tops lists of the worldâs most expensive cities. The cost of living in New York is a whopping 120% higher than the national average.