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Apatite: The mineral apatite information and pictures

Apatite is the main source of phosphorus. Phosphorus was previously extracted from crystalline Apatite, but nowadays is extracted from enormous deposits of Apatite-rich rock. Apatite is essential in the manufacture of phosphate fertilizers, and is very important in .

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Transformation of phosphorus in the wadden sea: Apatite .

Between February 1992 and June 1993 the distribution of particulate and dissolved phosphorus in the Ems estuary was investigated in approximately monthly intervals. Furthermore, the phosphorus content of sediments was assessed. These data as well as literature data were used to construct a phosphorus budget of the Ems estuary. Fluxes were dominated by the particulate fraction representing 77% .

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Apatite synonyms, apatite antonyms - FreeThesaurus

Synonyms for apatite in Free Thesaurus. Antonyms for apatite. 11 words related to apatite: atomic number 15, P, phosphorus, atomic number 65, Tb, terbium, atomic number 69, thulium, Tm, mineral, fluorapatite. What are synonyms for apatite?

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Phosphorus - Oregon State University

Sources for lakes Phosphorus content of parent geology is highly variable Pollution from detergents is a major source of phosphorus Sodium pyrophosphates and polyphosphates are added to complex with cations and inactivate them to enhance cleaning action (related to hardness)

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Phosphorus Transformation from Municipal Sewage Sludge .

Main content area. Phosphorus Transformation from Municipal Sewage Sludge Incineration with Biomass: Formation of Apatite Phosphorus with High Bioavailability Author: Zhao, Yazhou, Ren, Qiangqiang, Na, Yongjie Source: Energy & fuels 2018 v.32 no.10 pp. 10951-10955 ISSN: 1520-5029

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Phosphate Rocks | IntechOpen

Apatite is the most abundant phosphate mineral which include more than 95% of al phosphorus in the Earth´s crust. The seventh chapter of this book provides brief description of sedimentary and igneous phosphate rocks and introduces basic ideas for characterization and classification of phosphate rocks. The chapter continues with description of biogenic apatites, description of phosphate rocks .

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Marine Polyphosphate: A Key Player in Geologic Phosphorus .

Phosphorus is a vital macronutrient that profoundly influences global oceanic primary production on both modern and geologic time scales (1, 2).Over the past several decades, the residence time of phosphorus in the ocean has been repeatedly revised downwards as previously unidentified sedimentary sinks have been discovered (1, 3).Among these sinks are ubiquitous fine-grained authigenic apatite .

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Synthetic apatite nanoparticles as a phosphorus fertilizer .

Jul 14, 2014 · Some soluble phosphate salts, heavily used in agriculture as highly effective phosphorus (P) fertilizers, cause surface water eutrophication, while solid phosphates are less effective in supplying .

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Apatite / hexagonal phosphates / video

Apatite is a generic name for hexagonal phosphates of varying composition, Ca5 (PO4) 3 (OH, Cl, F). Three species are recognized by the IMA, named according to the prevalent anion: Chlorapatite, Fluorapatite, Hydroxyapatite. Two monoclinic variants previously recognized as species are now recognized as polytypes.

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Geochemistry of Uranium in Apatite and Phosphorite

P2O5 and uranium content of weathered and fresh Tennessee phosphates, Akin mine, Columbia, Tenn__ _____ 65 Uranium content of representative clastic apatite from the land-pebble phosphate field, Florida. ____ _____ 67 Iron and uranium content, in weight percent, of representative apatites from the Bone Valley formation, Florida. 69

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The geochemistry of phosphorus in different granite suites .

Apr 30, 2004 · The phosphorus content of alkali feldspar (mainly Kfs) is usually very low (typically 90%), low metal and uranium content and not raise .

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Utilization of Apatite Ores | IntechOpen

Phosphate rock is an important mineral commodity used in the chemical industry and production of food. The first section of ninth chapter of this book introduces utilization of apatite ores for manufacturing of phosphorus. The second part deals with production of phosphoric acid via wet and thermal process and utilization of byproducts such as phosphogypsum, phosphorous slag and .

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phosphorus in apatite

Phosphorus In Apatite - loscugnizzo.be. Phosphorus (P) in runoff can pose a water quality risk in phosphate mine reclamation areas. High dissolved P (DP) concentrations (about 0.4–3.0 mg L−1) in runoff . Chat With Sales; apatite and phosphorus mining - spirituelering. Apatite is the most common phosphate mineral, and is the main source of .

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Evaluation of the Acid Baking Technique to Decrease the .

of apatite and aluminosilicate compounds was observed. The chemical analysis was carried out by inductively coupled plasma optical emission spectrometry (ICP-OES) method performed at CETEM. The phosphorus content in the ore sample was 346 mg.kg-1, corresponding to 0.0346%. The iron ore with this amount of phosphorus would be treated as

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APATITE: 3 MINERALS, ONE NAME

Apatite is the main source of phosphorus, and is an important constituent of phosphorite, a phosphate-rich sedimentary rock mined for its phosphorus content and used to make fertilizers, acids, and chemicals used in the chemical and pharmaceutical industries.

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World Phosphate Rock Reserves and Resources

IFDC Rosemarin 2004 Rosemarin et al. 2009 Cordell, Dragert and White 2009 de Haes et al. 2009 Vaccari 2009 Institute of Ecology 1971 Phosphate rock reserves exhausted in 90-130 years Numerous articles have suggested phosphorus (phosphate rock) reserves — resources will be

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Remediation of copper contaminated soil by using different .

Jul 26, 2016 · Remediation of copper contaminated soil by using different particle sizes of apatite: a field experiment. . Soil pH, organic matter content and available phosphorus contents were analyzed based on the method given by Lu . The soil pH were measured in suspension with the carbon dioxide-free distilled water to soil ratio of 2.5 (V/W) by pH .

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Removal of phosphorus from iron ores by chemical leaching .

The results show that phosphorus occurring as apatite phase could be removed by alkali-leaching, but those occurring in the iron phase could not. Sulfuric acid is the most effective among the three kinds of acid. 91.61% phosphorus removal was attained with 1% .

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phosphorus in apatite

Apatite Gemstones. Phosphorus is an essential chemical in phosphate fertilizers. Phosphorus is also widely used in explosives, fireworks, pesticides, toothpaste and detergents. While tooth enamel is the hardest material in the human body, apatite is not especially hard when compared to other gemstones, with a rating of only 5 on the Mohs scale.

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(PDF) The Use of Phosphorus Contents in Yielding Estimates .

Phosphorus contents in cumulus rocks occurring close to the level of apatite appearance in the basic rocks of the Bushveld Complex, South Africa, provide a method of calculating the proportion of .

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Sustainable phosphorus removal with BOF steel slag and .

Full-scale implementation 24 Phosphorus removal Suitable for new P consents of 0.5 mg/L and above (apatite) and 1 mg/L and above (slag). Energy consumption Low tech, low energy, sustainable solution. Media lifetime No breakthrough achieved yet. At least 12 years for apatite. Effluent pH No issue for latest apatite formulation. Challenge with slag, linked to removal mechanism.

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Long-term effect of apatite on ectomycorrhizal growth and .

Mar 27, 2012 · Ectomycorrhizal (ECM) fungi are efficient at taking up phosphorus (P) from mineral sources, such as apatite, which are not easily available to the host trees. Since ECM fungal species differ in P uptake rates, it can be expected that the composition of the ECM fungal community will change upon exposure to apatite, provided that the P transfer is rewarded by more carbon being transferred to the .

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Geochemistry of Uranium in Apatite and Phosphorite

THE GEOCHEMISTRY OF URANIUM IN APATITE AND PHOSPHORITE By Z. S. ALTSCHULEK, K. S. CLAKKE, JR., and E. J. YOUNG ABSTRACT Apatite contains only traces of uranium, yet as apatite is a minor constituent in most rocks and the major constituent of a few very large deposits, it accounts, paradoxically, for both

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Phosphorus Fertilizer: The Original and Commercial Sources .

Earlier the original source of phosphorus (P) fertilizer was bones; as time passes, the supply of P fertilizer will get exhausted. 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.

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The role of intracellular calcium phosphate in osteoblast .

Our observation here that calcium and phosphorus-containing vesicles also exist intracellularly is in keeping with recent obser-vations of intracellular, vesicle-enclosed calcium phosphate in de-veloping mouse bone (12), and suggests that an intracellular process may play a role in bone apatite .

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Apatite: Its uses as a mineral and gemstone

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(PDF) Mineral Sources of Calcium and Phosphorus in Soils .

Mineral Sources of Calcium and Phosphorus in Soils of the Northeastern United States Apatite is ubiquitous in igneous, metamorphic, and sedimentary rocks, although usually

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Hydroxyapatite | Ca5HO13P3 - PubChem

Use of the information, documents and data from the ECHA website is subject to the terms and conditions of this Legal Notice, and subject to other binding limitations provided for under applicable law, the information, documents and data made available on the ECHA website may be reproduced, distributed and/or used, totally or in part, for non-commercial purposes provided that ECHA is .

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Apatite Mineral | Physical - Optical Properties .

As a mineral, apatite is chiefly used as a phosphorus source for the manufacture of fertilizers. One of the primary physical properties of apatite is that, in its mineral form, apatite is very stable and does not easily dissolve in a natural environment.

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Apatite Mineral Data

Excalibur Mineral Corp. Google Search for Apatite Exceptional Minerals Google Search for Apatite John Betts Fine Minerals Search for Apatite McDougall Minerals Google Search for Apatite Mineral News Website Link Rock and Mineral Shows Google Search for Apatite Weinrich Minerals, Inc. Google Search for Apatite. Ask about Apatite here :

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Processes for phosphorus removal from iron ore - a review

Iron ore of high phosphorus content coexists with other minerals in the form of apatite or fluorapatite. Phosphorus is spread on the edge of mineral particles of iron oxide and embedded in quartz or carbonate minerals and a small amount is present in the iron mineral grid (Xia et al., 2011).

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Transformation of apatite phosphorus and non-apatite .

The recovery of phosphorus from incinerated sewage sludge ash (SSA) is assumed to be economical. Transformation from non-apatite inorganic phosphorus (NAIP) to apatite phosphorus (AP), which has a higher bioavailability and more extensive industrial applications, was studied at 750-950°C by sewage sludge incineration and model compound incineration with a calcium oxide (CaO) additive .

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Genesis of a low-grade apatite-ilmenite-magnetite deposit .

The mafic intrusions were probably emplaced into a Svecofennian rift zone. They are characterized by a high phosphorus content; the common occurrence of ilmenite as separate grains; and the coeval crystallization of apatite, Fe-Ti oxides, and Fe-Mg silicates. The Kauhajärvi gabbro is composed of two geochemically and structurally distinct zones.

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Journal of Environmental Quality Abstract - Surface Water .

Please bookmark our new home page for current publications and archive content. Journal of Environmental Quality Abstract - Surface Water Quality Export of Total, Particulate, and Apatite Phosphorus from Forested and Agricultural Watersheds View My Binders

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Phosphorous availability influences the dissolution of .

) is the primary inorganic source of phosphorus in the biosphere. Soil fungi are known to increase plant-available phosphorus by promoting dissolution of various phosphate minerals. Yet no apatite dissolution studies exist using fungi as weathering agents, and regulation of fungal weathering activity

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Apatite - an overview | ScienceDirect Topics

Apatite (Ca 10 (PO 4) 6 (OH,F,Cl) 2) is the most common mineral for phosphates production, particularly for fertilizers and phosphoric acid.Apatite can be igneous or sedimentary. Almost all apatite ores contain rare earth elements, but igneous apatite has a higher concentration than sedimentary apatite.

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(PDF) Mineral Sources of Calcium and Phosphorus in Soils .

Apatite is the primary source of P and,. | Find, read and cite all the research you need on ResearchGate . Mineral Sources of Calcium and Phosphorus in Soils of the Northeastern United States.

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Phosphate Deposits - USGS

Apatite is the principal primary mineral, but a number of others are common in deposits formed during weathering of phosphate *In the trade the phosphate content of phosphate rock and fertilizer is commonly re­ ported as Ca3(PO4 >2, known as bone phosphate of lime (B.P.L.).

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phosphorus in apatite

Nearly all the phosphorus in terrestrial ecosystems is originally derived from the weathering of calcium phosphate minerals, especially apatite (Ca 5 (PO 4) 3 OH; Eq. 4.7). The phosphorus content of most rocks is not large, and in most soils only a small fraction of .

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Apatite weathering and the Phanerozoic phosphorus cycle .

If phosphorus is the ultimate controlling nutrient over geologic time scales, then long-term marine NEP is coupled to the release of phosphorus from apatite weathering. The most abundant apatite compositions found in nature are igneous fluorapatite and marine sedimentary carbonate fluorapatite.

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Apatite dissolution kinetics and the long-germ phosphorus .

Apatite is the primary exogenic sink of phosphorus (P). The weathering of apatite contained in continental rocks and sediments compensates for the P loss .

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Apatite - Wikipedia

Natural apatite has emerged as potentially effective for phosphorus (P) removal from wastewater. The retention capacity of apatite is attributed to a lower activation energy barrier required to form hydroxyapatite (HAP) by crystallization. The aim of our study was to test the P removal potential of four apatites found in North America.

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Synthetic apatite nanoparticles as a phosphorus fertilizer .

Agriculture is the major user of mined phosphorus (P), accounting for 80–90% of the world demand for P 1.Increasing population, growing preferences towards meat-based diets, and rising demands for bio-energy crops will increase the future demand for P fertilizers 1.However, application of P fertilizers exacerbates eutrophication problem in surface waters 2,3,4,5,6.

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Microbial sequestration of phosphorus in anoxic upwelling .

Jul 18, 2010 · Phosphorus is removed from the ocean by sedimentation of organic matter, and the subsequent conversion of organic phosphorus to phosphate minerals such as apatite.

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Phosphorus Leaching in Sandy Soils. I. Short-term Effects .

Phosphorus (P) losses by drainage (i.e. by leaching and runoff) from soils results in inefficient utilization of fertilizer and increased risk of eutrophication of rivers and .

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Apatite: Its uses as a mineral and gemstone

Natural apatite has emerged as potentially effective for phosphorus (P) removal from wastewater. The retention capacity of apatite is attributed to a lower activation energy barrier required to form hydroxyapatite (HAP) by crystallization. The aim of our study was to test the P removal potential of four apatites found in North America.

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phosphorus | Definition, Uses, & Facts | Britannica

About 550 different minerals have been found to contain phosphorus, but, of these, the principal source of phosphorus is the apatite series in which calcium ions exist along with phosphate ions and variable amounts of fluoride, chloride, or hydroxide ions, according to the formula [Ca 10 (PO 4) .

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Hydroxyapatite | Ca5HO13P3 - PubChem

The mineral component of bones and teeth; it has been used therapeutically as a prosthetic aid and in the prevention and treatment of osteoporosis. Expand this section. 2 Names and Identifiers. Expand this section. 3 Chemical and Physical Properties. Expand this section. 4 Spectral Information. Expand this section. 5 Related Records.

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World Phosphate Rock Reserves and Resources

Phosphorus From IFDC Phosphate Rock Two major types • Sedimentary – carbonate apatite • Igneous – fire-formed (fluor-chlor-hydroxl-apatite) Apatite – "Apate," Greek Goddess of deceit, guile, fraud and deception released from Pandora's Box

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Phosphorus K-edge XANES spectroscopy of mineral standards

Mar 01, 2011 · 3.1. Apatite-group minerals. Information and spectra for apatite-group minerals are presented in Table 1 and Fig. 1, respectively.Apatite is a common phosphate-bearing mineral, found in igneous, sedimentary and metamorphic rocks (Deer et al., 1992 ; Chang et al., 1996 ).Precipitation of apatite is a significant removal mechanism for phosphorus in various natural and anthropogenic .

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Phosphate Deposits - USGS

Apatite is the principal primary mineral, but a number of others are common in deposits formed during weathering of phosphate *In the trade the phosphate content of phosphate rock and fertilizer is commonly re­ ported as Ca3(PO4 >2, known as bone phosphate of lime (B.P.L.). To convert PjOs to

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Geochemistry of phosphorus and the behavior of apatite .

Dec 01, 2019 · The concentration of phosphorus in glassy melt inclusions and rehomogenized nanogranitoids suggests a strong control of melt aluminosity on apatite solubility in peraluminous granites, which is consistent with existing experimental studies.

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CiteSeerX — The use of phosphorus contents in yielding .

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Phosphorus contents in cumulus rocks occurring close to the level of apatite appearance in the basic rocks of the Bushveld Complex, South Africa, provide a method of calculating the proportion of intercumulus component in these rocks. Previous experimental studies have accurately constrained the phosphorus content of .

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Phosphorus Fertilizer Production and Technology

• Today most P fertilizer production is based on acidification of apatite. from phosphate rock (PR) Guano mining, Chincha Islands, Peru, 1860 Guano mining, Chincha Islands, Peru 1860 U.S. phosphate operation, late 1800s. The chemical symbol for the element phosphorus is P. The fertilizer industry often uses the more generic term phosphate.

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Effect of mechanochemical activation of natural .

Besides the total phosphorus content (P 2 O 5 total), . Our results showed that the solubility of phosphorus from apatite ores in citric acid increased proportionately with the grinding time, and it nearly reached the maximum level (59.03%, 50 min) at 30 min (57.51%) and then gradually reached an equilibrium, under the condition of the .

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Reaction Behavior of Phosphorus in Coal-Based Reduction of .

the reaction behavior of phosphorus during the reduction process. The phosphorus in the oolitic hematite ore exists as apatite, which is a double salt formed by Ca3(PO4)2 and CaF2, CaCl2, or Ca(OH)2. The reduction of apatite to phosphorus, the enrichment of phosphorus in reduced iron,

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phosphorus apatite mining

Phosphorus cycle Wikipedia. The availability of phosphorus in an ecosystem is restricted by the rate of release of this element during weathering. The release of phosphorus from apatite dissolution is a key control on ecosystem productivity. The primary mineral with significant phosphorus content, apatite [Ca 5 (PO 4) 3 OH] undergoes carbonation.

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APATITE (Calcium (Fluoro-, Chloro-, Hydroxyl-) Phosphate)

Apatite is actually three different minerals depending on the predominance of either fluorine, chlorine or the hydroxyl group. These ions can freely substitute in the crystal lattice and all three are usually present in every specimen although some specimens have been close to 100% in one or the other.

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Geochemistry of phosphorus and the behavior of apatite .

The concentration of phosphorus in glassy melt inclusions and rehomogenized nanogranitoids suggests a strong control of melt aluminosity on apatite solubility in peraluminous granites, which is consistent with existing experimental studies.

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Phosphorus removal by the use of apatite in constructed .

Sep 01, 2011 · Phosphorus (P) removal in constructed wetlands (CWs) has received particular attention during the last decades by using specific materials which promote P adsorption/precipitation phenomena. Recent studies have shown an interest in using apatite materials to promote P .

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Phosphorus - Nutrient Management | Mosaic Crop Nutrition

Organic phosphorus is found in plant residues, manures and microbial tissues. Soils low in organic matter may contain only 3% of their total phosphorus in the organic form, but high-organic-matter soils may contain 50% or more of their total phosphorus content in the organic form. Inorganic Phosphorus

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Mineral Resource of the Month: Phosphate Rock | EARTH .

As a mineral resource, "phosphate rock" is defined as unprocessed ore and processed concentrates that contain some form of apatite, a group of calcium phosphate minerals that is the primary source for phosphorus in phosphate fertilizers, which are vital to agriculture.

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Apatites - definition of Apatites by The Free Dictionary

Apatites synonyms, Apatites pronunciation, Apatites translation, English dictionary definition of Apatites. . chlorine, or hydroxyl. These compounds form hexagonal crystals and are components of bones and teeth, are a source of phosphorus for plants, and are used in the manufacture of fertilizers. . transparent mineral consisting mainly of .

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(PDF) Mineral Sources of Calcium and Phosphorus in Soils .

Apatite is the primary source of P and,. | Find, read and cite all the research you need on ResearchGate . Mineral Sources of Calcium and Phosphorus in Soils of .

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Unlocking Rare Earth Elements From European Apatite .

gangue mineral, which contributes to high phosphorus content of the ores. Many apatite iron ores contain 1 to 5 % P on average and apatite has been produced as a by‐ product at Malmberget during the First and Second World War but also in 1952‐1953.

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The Varied Uses and Forms of Apatite Will Raise Your .

Apatite uses span across diverse fields and uses of apatite determine the different forms of it that we know – as a mineral, as a gemstone or as apatite crystals. Uses of Apatite as Mineral As a mineral, apatite is chiefly used as a phosphorus source for the manufacture of fertilizers.

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Apatite synonyms, apatite antonyms

Synonyms for apatite in Free Thesaurus. Antonyms for apatite. 11 words related to apatite: atomic number 15, P, phosphorus, atomic number 65, Tb, terbium, atomic number 69, thulium, Tm, mineral, fluorapatite. What are synonyms for apatite?

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