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.
New York tops a recent list of Americaâs most expensive cities, with a measured cost of living surpassing that of Houston, Boston and Washington, D.C. The culprit? High rent: $4,300 a month on average for a two-bedroom, unfurnished luxury apartment.