Skip to main content
U.S. flag

An official website of the United States government


The Center conducts analyses of and develops information on minerals-related issues, including minerals conservation, sustainability, availability, materials flow, and the economic health of the U.S. minerals industry. 

Filter Total Items: 562

Mineral Resource of the Month: Iodine

Iodine is a bluish-black lustrous solid (violet-colored in its gaseous state) found primarily in seaweed, underground brines associated with petroleum deposits and caliche ore deposits. 

Lead scrap use and trade patterns in the United States,<br> 1995-2012

Since 1995, domestic production of lead has increasingly shifted from primary mining and smelting to the recovery of lead-bearing scrap by the secondary lead industry, which accounted for 91 percent of U.S. lead production in 2012. Increasingly stringent environmental regulations for lead emissions in the United States have contributed to the closure of primary lead refineries and the consolidatio

A Crosswalk of Mineral Commodity End Uses and North American Industry Classification System (NAICS) codes

This crosswalk is based on the premise that there is a connection between the way mineral commodities are used and how this use is reflected in the economy. Raw mineral commodities are the basic materials from which goods, finished products, or intermediate materials are manufactured or made. Mineral commodities are vital to the development of the U.S. economy and they impact nearly every industri

Mineral Resource of the Month: Bromine

Bromine, along with mercury, is one of only two elements that are liquid at room temperature. Bromine is a highly volatile and corrosive reddish-brown liquid that evaporates easily and converts to a metal at extreme pressures — above about 540,000 times atmospheric pressure. Bromine occurs in seawater, evaporitic (salt) lakes and underground brines associated with petroleum deposits. 

Frac sand in the United States: a geological and industry overview

A new mineral rush is underway in the upper Midwest of the United States, especially in Wisconsin and Minnesota, for deposits of high-quality frac sand that the mining industry calls “Northern White” sand or “Ottawa” sand. Frac sand is a specialized type of sand that is added to fracking fluids that are injected into unconventional oil and gas wells during hydraulic fracturing (fracking or hydrofr

Peat, 2014

No abstract available.

Titanium, 2014

No abstract available.

Nitrogen-Ammonia, 2014

No abstract available.

Lithium 2014

No abstract available.

Gemstones 2014

No abstract available.

Potash, 2014

No abstract available.