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rock phosphate sedimentary

  • 122 PHOSPHATE ROCK - USGS

    Phosphate rock resources occur principally as sedimentary marine phosphorites. The largest sedimentary deposits are found in northern Africa, China, the Middle East, and the United States. Significant igneous occurrences are found in Brazil, Canada, Finland, Russia, and South Africa. Large phosphate resources have been identified on the continental

  • What are sedimentary rocks? - USGS

    Sedimentary rocks are formed from pre-existing rocks or pieces of once-living organisms. They form from deposits that accumulate on the Earth's surface. Sedimentary rocks often have distinctive layering or bedding. Many of the picturesque views of the desert southwest show mesas and arches made of layered sedimentary rock.Common Sedimentary Rocks:

  • Environmental impact of phosphate mining and beneficiation ...

    Phosphate rocks, mining and beneficiation Phosphate rocks Phosphate rocks can be mined from three main deposits,11,12 the dominant deposits are sedimentary source (75%), Igneous sources (15–20%) and animal such as and bat guano source (2–3%). There are about 200 verities of phosphate minerals of which the minable

  • Phosphate Rock - Minerals Education Coalition

    Sedimentary. Description. 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.

  • Bench scale flotation of sedimentary phosphate rock with ...

    single stage flotation of sedimentary phosphate rock. Thus, the commonly used phosphate flota­ tion process in Florida is the "double float" process, viz. anionic flotation of phosphate min­ erals at alkaline pH, rougher flotation, followed by acid scrubbing and cationic "reverse" flota­ …

  • Global Sedimentary Phosphate Rock Market 2021 Recovering ...

    "A SWOT Analysis of Sedimentary Phosphate Rock Market, Professional Survey Report Including Top Most Global Players Analysis with CAGR and Stock Market Up and Down." The global Sedimentary Phosphate Rock market research report focuses on providing the audience with the microscopic data under a solitary report. The Sedimentary Phosphate Rock market research …

  • Phosphate Rock | Mosaic Crop Nutrition

    Phosphate rock comes from geologic deposits located around the world. Its main constituent is apatite, a calcium phosphate mineral primarily extracted from sedimentary marine deposits, with a small amount obtained from igneous sources. Most phosphate rock is recovered through surface mining, although some is extracted from underground mines.

  • India to explore indigenous deposits of Phosphatic rocks ...

    Phosphate rock deposits can be sedimentary (formed from sediment deposited by water or air) or igneous (having solidified from lava or magma). However, the easiest way to obtain phosphorus is by way of mining and concentrating phosphate rock from the phosphate deposits. Used in fertilizers. Worldwide, more than 85% of the phosphate rock mined ...

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

    Rock Resources in China Marine sedimentary PR is the class of phosphate- resource-bearing rocks most widely distributed in the world. The world's largest sedimentary phosphate de-posits are found in northern Africa, China, the Middle East and America. The second most common are igneous rock phosphate deposits, mainly found in Brazil, Canada ...

  • GEOL 1301 - MidTerm (Sedimentary Rocks Sedimentary Rocks ...

    Phosphate rock. Limestone. What type of sandstone contains abundant feldspar? Quartz Arkose Oolite Lignite. ... A dark, organic-rich, chemical sedimentary rock containing small crystals of halite A sandstone with sand grains embedded in a clay-rich matrix …

  • Phosphate Rock Market – Global Industry Trends and ...

    Phosphate rocks have a huge concentration of phosphate minerals where sedimentary and marine deposits are the major sources. Phosphate rock is a grainy non-detrital sedimentary rock and contains high about of minerals. The phosphate rocks are also used to …

  • phosphorite | Definition, Formation, & Uses | Britannica

    Many sedimentary rocks contain phosphate in the form of scattered bones composed of the mineral apatite (calcium phosphate), but rocks composed predominantly of phosphate are rare. Nevertheless, three principal types exist: (1) regionally extensive, crystalline nodular, and bedded phosphorites, (2) localized concentrations of phosphate-rich…

  • Apatite: From Crystals to Phosphate Rock | Rock & Gem Magazine

    However, most of the apatite in the Earth's crust occurs not as macrocrystals, but in microscopic form within a coarse-grained, buff-to-brown, sedimentary rock called phosphate rock. The extraordinary industrial and agricultural importance of phosphate …

  • Major deposits of phosphate - USGS

    United States. Atlantic coastal plain phosphate province, Blake Plateau/Charleston Bump. Sedimentary. Google Maps. South Carolina. United States. Atlantic coastal plain phosphate province, Charleston - Beaufort District. Sedimentary.

  • Phosphorus Fertilizer: The Original and Commercial Sources ...

    Today, rock phosphate is the only raw material in the form of P fertilizers. There are two types of rock phosphates: igneous and sedimentary; both have the same phosphate mineral, i.e., calcium phosphate of apatite group. The general formula for pure rock phosphate is Ca10(PO4)6(X)2, where X is F−, OH− or Cl−. These minerals are called ...

  • Phosphate Rock

    Phosphate Rock. Phosphate Rock is an excellent natural source of phosphorus, calcium and many essential trace elements. It contains over 30 percent total phosphate (3-8 percent available) and 48 percent calcium (as CaO). Phosphate rock has approximately one fifth the neutralizing power of lime.

  • Sedimentary and Igneous Phosphate Deposits: Formation and ...

    Sedimentary phosphorite is a marine bioelemental sedimentary rock that contains >18 wt % P 2 O 5. While small peritidal phosphorites formed in Precambrian coastal environments, economically significant upwelling-related phosphorite did not accumulate until the …

  • Where does rock phosphate come from? - AskingLot.com

    Phosphate rock comes from geologic deposits located around the world. Its main constituent is apatite, a calcium phosphate mineral primarily extracted from sedimentary marine deposits, with a small amount obtained from igneous sources. Click to see full answer. Similarly, it is asked, what type of rock is phosphate? sedimentary.

  • Reverse flotation of sedimentary calcareous/dolomitic rock ...

    The processing of sedimentary dolomitic/calcareous phosphate ore has numerous problems, including similar surface properties of the carbonate and phosphate. Two-stage reverse anionic flotation of carbonates (dolomite/calcite) has appeared to be a promising separation technique for the removal of carbonates from sedimentary rock phosphate.

  • Phosphate Rocks: A Review of Sedimentary and Igneous ...

    Phosphate rocks are a vital resource for world food supply and security. They are the primary raw material for phosphoric acid and fertilizers used in agriculture, and are increasingly considered to be a potential source of rare earth elements. Phosphate rocks occur either as sedimentary deposits or igneous ores associated with alkaline rocks.

  • Phosphorites and High Phosphate Sedimentary Rocks

    High Phosphate Sedimentary Rocks. All sedimentary rocks on the continents contain phosphorus in small amounts. These deposits are thought to originate from the skeletons of organisms. Other sedimentary rocks contain extraordinary amounts of the phosphate ion (PO 4)-3 in a variety of minerals. These would be phosphorites or high phosphate ...

  • Phosphate Deposits - USGS

    Sedimentary phosphorite and weathering derivatives _____ 10 Guano and related deposits _____ 13 ... 2 The term "phosphate rock" is loosely applied to rocks of any origin that contain more than about 20 percent P2Os. The term "phosphorite" is equivalent in meaning, but is commonly applied only to phosphate rocks of marine origin. ...

  • World Phosphate Deposits | Geology for Investors

    Phosphate rock occurs either as sedimentary or igneous deposits with sedimentary sources comprising roughly 80% of the world's production. Igneous sources are more difficult due to the high degree of crystallinity, making the ore less soluble for processing.

  • How phosphate is mined and processed

    rock phosphate can become soluble (and available to plants) either by chemical weathering or through the actions of certain types of plants. The solubility also depends on rock type and the pH of the soil; phosphorus is most soluble when contained in sedimentary rocks as opposed to igneous rock, and when soil pH is between 5.5 and 7.2.

  • Phosphate Rock - an overview | ScienceDirect Topics

    Phosphate rock used for fertilizer is a major NORM due to both uranium and thorium. Phosphate is a common chemical constituent of fertilizer. It is principally mined from apatite and phosphate rocks (phosphorite) in which the concentration of phosphate has been enhanced by sedimentary, igneous, weathering, and biological processes.

  • USGS Open-File Report 2015–1121: Phosphate Occurrence and ...

    Phosphate Rock. Known Resources of the Region. Neoproterozoic–Cambrian Sedimentary Phosphate. Ordovician Sedimentary Phosphate. Devonian Sedimentary Phosphate. Permian Sedimentary Phosphate. Triassic-Jurassic Sedimentary Phosphate. Cretaceous Sedimentary Phosphate. Paleogene Sedimentary Phosphate. Neogene Sedimentary Phosphate. Igneous ...

  • Phosphate Rock 101 | Resource Innovations

    Phosphate ores may be found in igneous or sedimentary rocks. Apatite is the name of phosphate based minerals in phosphate ore whether the ore is of an igneous or sedimentary origin. The majority of the phosphate rock resources are sedimentary, i.e. they originate from remains of marine life in regions that were once covered by seas, and got ...

  • Mineral Resource of the Month: Phosphate Rock

    Phosphate rock deposits can be sedimentary or igneous, but more than 80 percent of the world's current production of phosphate rock is mined from sedimentary deposits formed by deposition of phosphate-rich materials in marine environments. Large sedimentary deposits are located in China, the Middle East, northern Africa and the United States.

  • PHOSPHATE ROCK (FERTILIZER) - Chemicalland21.com

    PHOSPHATE ROCK. CAS NO. EINECS NO. MOL WT. 'Rock Phosphate' is a sedimentary rock composed of phosphate minerals high enough, especially apatite. It is used directly in fertilizer and as a source of phosphorous compounds. Apatite includes 10 mineral species and has the general formula X 5 Y (PO 4) 3, where X is usually Ca 2+ or Pb 3+ and Y is F ...

  • Phosphorite - Wikipedia

    Sedimentary phosphorite and weathering derivatives _____ 10 Guano and related deposits _____ 13 ... 2 The term "phosphate rock" is loosely applied to rocks of any origin that contain more than about 20 percent P2Os. The term "phosphorite" is equivalent in meaning, but is commonly applied only to phosphate rocks of marine origin. ...

  • Use of phosphate rocks for sustainable agriculture

    Phosphate rock mineralogy Sedimentary apatites. Most sedimentary deposits contain varieties of carbonate-fluorapatite that are grouped under the collective name francolite (McConnell, 1938). In establishing a series of systematic relationships between francolites, various authors (McClellan and …