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.
Sep 18, 2015. The world's most expensive cities are Zurich and Geneva, according to a study by investment bank UBS, that doesn't include rent. The cities top New York City, which is No.3 on the list. If you do include rent, however, it's no surprise that the U.S. city surges to the top.