Are minerals scarce in Mexico?
Not at all. Mexico is ranked in the top 5 producers of silver (13% of world production), bismuth (20% of the world's total), celestite (7% of world output) and fluorspar (18% of world output); sixth in molybdenum; among the top 10 in barite, bentonite, arsenic, diatomite, graphite, cadmium, gypsum, mine lead, manganese ore, salt, sulfur, and mine zinc; and in the top 15 in mine copper, cement, gold, and crude steel (second largest producer in Latin America).
Liquid water is scarce in the solar system because it exists within a very narrow range of temperatures. Fresh water on Earth is scarce in some areas because the climate does not supply all areas of the globe with equal precipitation. Water of any kind is scarce in continental regions with high average temperatures, because open sources are subject to evaporation. Surface water is especially vulnerable to a buildup of dissolved alkali minerals and salts.
All of Mexico produces minerals; concentrations of these depend on each region: while the Yucatan peninsula excells at limestone and other building materials, to the east -- along the Gulf of Mexico -- you can find rich deposits of oil and gas. Along the Sierra Madre mountain ranges you will find most strategis minerals: some of these include iron, gold, silver, lead or sulfur.