phosphate rock usgs

Phosphate Rock Usgs

Phosphate Rock Statistics and Information - usgs.gov

Phosphate rock minerals are the only significant global resources of phosphorus. The United States is the worlds leading producer and consumer of phosphate rock, which is used to manufacture phosphate fertilizers and industrial products.

Phosphate rock resources of the United States - USGS

In 1980, the United States produced about 54 million tons of phosphate rock, or about 40 percent of the worlds production, of which a substantial amount was exported, both as phosphate rock and as stone fertilizer. During the last decade, predictions have been made that easily ruinable, low-cost reserves of phosphate rock would be exhausted, and that by the end of this century, instead of ...

World phosphate mines, deposits, and occurrences

USGS Open-File Report 2002-156. Data set of world phosphate mines, deposits, and occurrences-- Part A. Geologic data; Part B. Location and mineral economic data

Mineral Resource of the Month: Phosphate Rock | EARTH Magazine

Mining first began in the United States in 1867 in South Carolina. Phosphate rock was discovered in central Florida in the 1880s, and because of the extensive, high-quality deposits and lower mining cost, it quickly became the leading phosphate-producing state. Currently, phosphate rock is mined in Florida, Idaho, North Carolina and Utah.

Phosphate Deposits - USGS

Phosphate leached from guano phosphatizes the underlying rocks in some areas, forming apatite where the host rock is limestone and forming aluminum- or aluminum-iron-phosphate minerals where the underlying rock is a silicate.

Phosphates: Commodity Overview | Geology for Investors

Phosphate Deposits and Mining Sedimentary phosphorites of marine origin are the most important phosphate deposits, but guano phosphate rock and even contemporary guano (modern bat droppings) are currently mined.  Sedimentary phosphate deposits occur near shore, shallow marine environments along the continental shelf.

Phosphorite - Wikipedia

The phosphate content of phosphorite (or grade of phosphate rock) varies greatly, from 4% to 20% phosphorus pentoxide (P 2 O 5). Marketed phosphate rock is enriched ("beneficiated") to at least 28%, often more than 30% P 2 O 5. This occurs through washing, screening, de …

Reserves and Resources DC World Phosphate Rock

phosphate rock reserves/resources of the Earth will be exhausted in the next century with a peak in phosphorus production occurring in 2033-2034. Essentially, all these articles reference U.S. Geological Survey (USGS) Mineral Commodity Summaries for phosphate rock reserve and …

Peak phosphorus - Wikipedia

In 2017, the United States Geological Survey (USGS) estimated that economically extractable phosphate rock reserves worldwide are 68 billion tons, while world mining production in 2016 was 261 million tons. Assuming zero growth, the reserves would thus last for 260 years.

Phosphate - Wikipedia

Phosphate deposits can contain significant amounts of naturally occurring heavy metals. Mining operations processing phosphate rock can leave tailings piles containing elevated levels of cadmium, lead, nickel, copper, chromium, and uranium. Unless carefully managed, these waste products can leach heavy metals into groundwater or nearby estuaries.

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