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 City is the most expensive US city to live in, and the 7th most expensive city in the world.Justin Sullivan/Getty. Out of 133 global cities ranked in the Economist Intelligence Unit's (EIU) recent Worldwide Cost of Living report â which highlights the most expensive and cheapest cities to live in â 16 US cities were represented.