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 was the worldâs most expensive city including rent as of April 2015, according to a new analysis by UBS. KENA BETANCUR/AFP/GETTY IMAGES. New York City takes the top spot in the annual ranking of the worldâs most expensive cities, according to an analysis by UBS. The cost of goods and services was higher in just two other citiesâ Zurich and Genevaâ but they were less expensive than New York after including rent.