united states phosphate rock hardness

Discovery of Phosphate in Florida

Discovery of Phosphate in Florida. Some three decades after phosphate rock was first mined in England to be used in fertilizer, Dr. C. A. Simmons, who owned a rock quarry for building stone in Hawthorne, near Gainesville in Alachua County, had some of his rock …


United States Geological Survey (USGS) commodity statistics predict a 20% increase in production from 215Mt in 2011 to 260Mt in 2017. In Australia the Middle Cambrian phosphorite deposits of the Georgina Basin, Queensland and Northern Territory (NT) host 90% of inferred phosphate rock resource of which the total in 2011 was 1813Mt.

US Diammonium Phosphate Spot Price (Gulf)

 · US Diammonium Phosphate Spot Price (Gulf) is at a current level of 613.00, up from 604.75 last month and up from 305.10 one year ago. This is a change of 1.36% from last month and 100.9% from one year ago. Report.

Phosphorus Solutions

Struvite, or magnesium ammonium phosphate, is a hard, clear crystal that occurs naturally when ammonium-producing bacteria break down the urea in urine. It''s the substance that causes kidney stones, and for centuries, it has been the bane of sewage system operators the world over, forming hard, rock-like crystal deposits on the inside of pipes ...

The determination of magnesia in phosphate rock

(MgO—0.25percent),Floridahardrock(MgO—0.05percent), Wyoming phosphate rock (MgO— 0.08 per cent) andIdahophosphate rock (MgO — 0.31 per cent) 6 wasdecomposed by treatmentwith

Mineral Resource of the Month: Phosphate Rock

 · Phosphate rock production and consumption. U.S. production of phosphate rock in 2012 was 30.1 million metric tons, valued at $3.08 billion. Total world production of phosphate rock in 2012 was 233 million metric tons. China was the leading producer, with 41 percent of world production, followed by the United States, Morocco and Western Sahara.

Water Hardness Map of the United States

Water Hardness Map of the United States, Water Hardness Table of Classifications and links to more information about water softening and effects.

SL364/SS565: Landscape Diversity: Florida Phosphate Mine ...

United States Environmental Protection Agency (US EPA). 1986. Quality Criteria for Water. Office of Water Regulations and Standards. Publication No. EPA-440/5-86-001. United States Geological Survey (USGS). 2011. 2010 Minerals Yearbook. Phosphate Rock. Accessed March 20, 2012.

Phosphate Industry

In the United States, phosphate rock mining is the fifth largest mining industry in terms of quantity of material mined. In 2013 the total production of phosphate rock in the US was estimated at 32 million tonnes (35 million tons). Most of the phosphate production goes to …

Radioactive Material From Fertilizer Production | US EPA

 · Phosphate rock mining is the fifth largest mining industry in the United States in terms of the amount of material mined. The phosphate industry is concentrated in the southeastern United States. About 90% of phosphate is mined in Florida, North Carolina, and Tennessee.

How to Identify Black Minerals

 · Hematite. Hematite, an iron oxide, is the most common black or brownish-black mineral in sedimentary and low-grade metasedimentary rocks. It varies greatly in form and appearance, but all hematite produces a reddish streak. Characteristics: Dull to semimetallic luster; hardness of 1 to 6.

Distribution of uranium in the Florida phosphate field

Land-pebble phosphate, hard-rock phosphate, and river-pebble phosphate are the three types of phosphatic rock found in Florida. This report is concerned primarily with the land-pebble deposits, the only type which contains a significant amount of uranium. The most productive part of the land-pebble district is in Polk and Hillsborough Counties, in the west-central part of the Florida peninsula.

Farmers are facing a phosphorus crisis. The solution ...

 · Nearly all of the phosphorus that farmers use today—and that we consume in the food we eat—is mined from a few sources of phosphate rock, mainly in the United States, China, and Morocco.


PHOSPHATE ROCK. By R. W. STONE. Prior to 1914 the United States was producing annually close to 3,000,000 tons of phosphate rock, of which over 99 per cent came from Florida, Tennessee, and South Carolina. Florida produced more than 75 per cent of the total output, including the great bulk

Commodity Statistics and Information

Commodity Statistics and Information. Statistics and information on the worldwide supply of, demand for, and flow of minerals and materials essential to the U.S. economy, the national security, and protection of the environment.

Phosphate | Florida Department of Environmental Protection

This hard-rock phosphate was mined in a region extending from Alachua to Citrus counties. The mining of pebble phosphate began in 1888 in central Florida and in the 1960s in Hamilton County. Today phosphate mining occurs primarily in the central Florida area …

Phosphate mining in the United States

Hard Rock de Floride. Le district de Florida Hard Rock extrait du phosphate d''une ceinture allant jusqu''à 30 miles (48 km) de large et 150 miles (240 km) de long, s''étendant de Tallahassee à l''ouest au comté de Pasco à l''est. Des gisements de phosphate se trouvent dans les comtés de …

United States Pharmacopeia

Ignore the politics. Trust the science. Recent politicization of the COVID-19 vaccine development and approval process has led to a concerning loss of confidence in vital governmental institutions designed to protect the public from harm.

Geology of Phosphate Rock in China: Distribution, Rock ...

Geology of Phosphate Rock in China: Distribution, Rock Type and Metallogenic Perspective Gang HE ... The commercial deposits in the United States are all marine phosphor ites that were formed under ... density and hardness, among other properties. A geode looks like a common rock …

Mineral Mining and Processing Effluent Guidelines | US EPA

 · Mineral Mining and Processing Effluent Guidelines. EPA promulgated the Mineral Mining and Processing Effluent Guidelines and Standards ( 40 CFR Part 436) in 1975, and amended the regulation in 1976, 1977, 1978, and 1979. The regulation covers wastewater discharges from mine drainage, mineral processing operations and stormwater runoff.

Hardness of Water

Water systems using groundwater as a source are concerned with water hardness, since as water moves through soil and rock it dissolves small amounts of naturally-occurring minerals and carries them into the groundwater supply.Water is a great solvent for calcium and magnesium, so if the minerals are present in the soil around a water-supply well, hard water may be delivered to homes.

Soda Springs Phosphate

Soda Springs Phosphate has been providing bulk fertilizer in both the United States and Canada for over 40 years. We manufacture organic fertilizers in the form of granulated phosphate, gypsum, and poultry compost. We also offer a powdered phosphate fertilizer. These organic supplements will supply the energy and nutrients necessary for healthy ...

Mining in Idaho

Almost 45 per cent of all silver mined in the United States comes from Idaho. Silver and phosphate are the two major minerals produced in Idaho. We are the nation''s second largest producer of phosphate with 15 per cent of the United States yearly production. Although Idaho produces little gold, the United States Bureau of Mines says that we ...

Are We Running Out of Phosphorus?

fertilizer comes from mined phosphate rock. The phosphorus is then transformed to either phosphoric acid or elemental phosphoru s before being turned into fertilizer (United States Environmental Protection Agency [EPA], 2012). Phosphate rock is used directly as a fertilizer in organic production; but

Phosphorus: Essential to Life—Are We Running Out?

 · Ninety percent of the phosphate rock reserves are located in just five countries: Morocco, China, South Africa, Jordan and the United States. The U.S., which has 25 years of phosphate rock reserves left, imports a substantial amount of phosphate rock from Morocco, which controls up to 85 percent of the remaining phosphate rock reserves.


 · Phosphate fertilizers are prepared by beneficiation of phosphate rock to remove its impurities, followed by drying and grinding. The PO 4 in the rock may then be reacted with sulfuric acid to produce normal superphosphate fertilizer. Over 100 plants operating in the United States produce approximately a billion kilograms of phosphate fertilizer ...

Floripedia: Production of Phosphate Rock in Florida During ...

The production for 1908, 768,011 tons, is the maximum output for the hard rock fields, and unless the phosphate market materially improves is likely to remain the maximum. As in former years the hard rock is consigned largely to foreign markets, although the amount of hard rock used within the United States is gradually increasing.

Mining Minerals p1

Phosphate rock in southeastern Idaho is either: 1) processed into chemical fertilizer products by a wet process that dissolves phosphate rock with sulfuric acid to produce phosphoric acid; or 2) processed into elemental phosphorus by smelting a mixture of agglomerated phosphate rock, silica, and fine-free coke in a submerged-arc electric furnace.

TENORM: Fertilizer and Fertilizer Production Wastes | US EPA

 · Phosphate rock (phosphorite) mining is the fifth largest mining industry in the United States in terms of quantity of material mined. In 2019 the total production of phosphate rock in the U.S. was estimated at 23 million metric tons (MT). Most phosphate production leads to …

IMC Fertilizer Group, Inc. -

With that in mind, Meadows & Co. changed its name in 1899 to United States Agricultural Corporation and began acquiring the assets it would need to survive in the rapidly consolidating fertilizer industry. In 1900 it gained control of two companies engaged in the Florida phosphate mines, Florida Mining Company and Peoria Pebble Phosphate Company.

Phosphate-Rock Resources of the United States

Phosphate-Rock Resources of the United States By JAMES B. CATHCART, RICHARD P. SHELDON, and ROBERT A. GULBRANDSEN GEOLOGICAL SURVEY CIRCULAR 888 An analysis of phosphate-rock resources, based on past estimates and all available recent information, indicates that sufficient phosphate exists in the United States to meet domestic demands


The leading phosphate rock producer in the United States permanently closed a phosphoric acid and fertilizer plant in June 2019 as part of corporate restructuring. The facility had been idled since 2017 and the phosphate rock mine that supplied the plant closed in late 2018. Another company planned to use the facility to manufacture organic ...

Phosphate Rock Statistics and Information

The United States is the world''s leading producer and consumer of phosphate rock, which is used to manufacture phosphate fertilizers and industrial products. Subscribe to receive an email notification when a publication is added to this page. Monthly Publications. Mineral Industry Surveys. Marketable Phosphate Rock, Monthly PDF Format:

Phosphate Rock | Minerals Education Coalition

The term phosphate rock (or phosphorite) is used to denote any rock with high phosphorus content. The largest and least expensive source of phosphorus is obtained by mining and concentrating phosphate rock from the numerous phosphate deposits of the world. Some phosphate rock is used to make calcium phosphate nutritional supplements for animals.

Countries With the Largest Phosphate Reserves

 · Morocco remains the largest exporter of phosphate. However, the high cost of mining and threats of war has derailed the production of phosphate in the country. Chin is a distant second with 5% of the total reserves, translating to approximately 3.1 billion tons. However, China remains the largest producer of phosphate at 138 million metric tons.

Monazite: A rare-earth phosphate mineral.

What is Monazite? Monazite is a rare phosphate mineral with a chemical composition of (Ce,La,Nd,Th)(PO 4,SiO 4) usually occurs in small isolated grains, as an accessory mineral in igneous and metamorphic rocks such as granite, pegmatite, schist, and gneiss.These grains are resistant to weathering and become concentrated in soils and sediments downslope from the host rock.


Chemical properties. The phosphate ion has a molar mass of 94.97 g/mol, and consists of a central phosphorus atom surrounded by four oxygen atoms in a tetrahedral arrangement. It is the conjugate base of the hydrogen phosphate ion H(PO 4) 2−, which in turn is the conjugate base of the dihydrogen phosphate ion H 2 (PO 4) −, which in turn is the conjugate base of orthophosphoric acid, H

Gay Mine (MRDS #10119519) P

Geographic coordinates: -112.11363, 43.04851 (WGS84) Elevation. 1720. Location accuracy. 10 (meters) Political divisions (FIPS codes) Bingham (county) Idaho (state)

Amazon : Espoma RP7 Rock Phosphate, 7.25-Pound ...

Organic rock phosphate provides phosphorous for all flowering plants. All natural and pelletized for easy application. Mined from phosphorous rich natural deposits. Carrying a formulation of 0-3-0. Comes in 7.25-pound bag. Show more. New (2) from $14.48 FREE Shipping on orders over $25.00 shipped by …

11 Hardest Minerals In The World | On Mohs Scale

 · Mohs hardness: 1 Absolute hardness: 1. Chemical formula: Mg 3 Si 4 O 10 (OH) 2. Talc is a mineral composed of hydrated magnesium silicate. It is opaque to translucent, with colors ranging from green to whitish gray. It is a common metamorphic mineral in metamorphic belts of the western United States, Western Alps, and in the Himalayan region.

Metals and Other Trace Elements

Elevated manganese concentrations in United States groundwater, role of land surface–soil–aquifer connections. Chemical data from 43 334 wells were used to examine the role of land surface–soil–aquifer connections in producing elevated manganese concentrations (>300 μg/L) in United States …