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.
While Asia has three of the most expensive cities in the world, India has four of the least expensive, including New Delhi, Mumbai, Bangalore, and Chennai. The least expensive city on the 133-city survey is Lusaka, Zambia, meaning it might be time to start planning that safari. 1. Singapore.