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phosphorus in apatite

Apatite | mineral | Britannica

Apatite, any member of a series of phosphate minerals, the world's major source of phosphorus, found as variously coloured glassy crystals, masses, or nodules. If not for its softness (Mohs hardness 5, compared with the 7 to 9 of most gems), apatite would be a popular gemstone; much of the material

Apatite in Igneous Systems | Reviews in Mineralogy and ...

Apatite is a minor but ubiquitous mineral in most igneous rocks. Although the modal proportion of apatite in common rocks is generally low, it can reach high concentrations in enclaves, cumulates, and other rocks of low abundance (i.e., rocks that constitute a small volume of …

Apatite Control of Phosphorus Release to Runoff from Soils ...

apatite. The Ca- and Mg-bound P accounted for about 95% of TP. Runoff samples were undersaturated with respect to apatite. A strong relationship between calculated apatite specific surface area and measured DP concentration in water extracts is supportive of other evidence that apatite dissolution is a major factor controlling P release from ...

Solubilization of Phosphorus from Apatite by Sulfuric Acid ...

The phosphorus (P) present in apatitic materials is largely in forms that are not readily available for most arable crops. Many attempts have been made to increase the dissolution of phosphate rock. Hence, soluble P or superphosphate used as fertilizer has been produced by the industrial acidification of apatite …

Phosphorite - Wikipedia

Phosphorite, phosphate rock or rock phosphate is a non-detrital sedimentary rock which contains high amounts of phosphate minerals. The phosphate content of phosphorite (or grade of phosphate rock) varies greatly, from 4% to 20% phosphorus pentoxide (P 2 O 5).

Phosphorus removal from wastewater by mineral apatite ...

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 ...

Processes for phosphorus removal from iron ore - a review

The phosphorus content dropped from 0.82% to 0.06% and iron from 43.65% to 60.23% with 87% mass recovery. Analysis showed that 20% of apatite reacted with SiO 2, Al 2 O 3 and carbon, generating elemental phosphorus in the form of gas. About 80% of the phosphorus was incorporated into the slag and it was separated from the grinding and magnetic ...

Phosphorus Fertilizer Production and Technology

and P minerals (apatite) was patented in mid 1800s. • 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.

Phosphate Minerals in Terrestrial Igneous and Metamorphic ...

Nonetheless, in common igneous and metamorphic rocks phosphate mineral diversity is extremely limited and is dominated by the occurrence of apatite. This chapter is devoted to phosphates in terrestrial igneous and metamorphic rocks in the strictest sense.

phosphorus in apatite - dietcoachcenter.it

Apatite is a group of phosphate minerals which includes hydroxyl-apatite, fluor-apatite and chlor-apatite Apatite is the most common type of phosphate in the world and it is the main source for phosphorus, a chemical essential to bioenergetics and photosynthesis

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 …

Phosphorus

The soil pH for optimum phosphorus availability is 6.5 ; At high or neutral pH, phosphate reacts with calcium to form minerals, such as apatite. Under acidic conditions, phosphorus may react with aluminum and iron to form minerals, such as strengite and …

Apatite Gemstone Information - GemSelect

Apatite is the most common type of phosphate in the world and it is the main source for phosphorus, a chemical essential to bioenergetics and photosynthesis. Apatite is composed of calcium phosphate, which is the same material that makes up teeth and bones. Apatite can …

Challenges Associated with Apatite Remediation of …

Challenges Associated with Apatite Remediation of Uranium in the 300 Area Aquifer DM Wellman VR Vermeul JS Fruchter MD Williams April 2008 Prepared for the U.S. Department of Energy under Contract DE-AC05-76RL01830. ... Phosphorus, Chloride, and Bromide at Down-Gradient Well

(PDF) 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.

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

Phosphorus - No Man's Sky Wiki

In real life, Phosphorus is almost never found freely in nature; except for minerals such as apatite. Phosphorus is found organically in sources of bone ash and guano and is also produced in supernovae as a byproduct of supernova nucleosynthesis, where the phosphorus-to-iron ratio from the supernova remnant is believed to be 100 times higher ...

Synthetic apatite nanoparticles as a phosphorus fertilizer ...

Jul 14, 2014· Using apatite nanoparticles as a new class of P fertilizer can potentially enhance agronomical yield and reduce risks of water eutrophication. Synthetic apatite nanoparticles as a phosphorus ...

Apatite Gemstones - GemSelect

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. So apatite jewelry ...

Apatite Mineral Data

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The role of intracellular calcium ... - PubMed Central (PMC)

Aug 28, 2012· However, recent insights into the role of amorphous mineral precursors in bone mineralization, and our and other's observations of intracellular calcium and phosphorus-containing vesicles, suggests that active transport of mineral from the intra- to the extracellular space may play a role in bone apatite formation.

Green Apatite - Meanings

Green Apatite is mineral containing "phosphorus (P)". It is classified as one type of "Phosphate minerals". Apatite is used as a resource mineral of "phosphorus (P)". Since "phosphorus (P)" is easy to burn, it will be a material for matches, and so on. In addition, it is used as fertilizer.

Which Minerals Include Phosphate? - ThoughtCo

Apatite is a family of minerals centered around fluorapatite, or calcium phosphate with a bit of fluorine, with the formula Ca 5 (PO 4) 3 F. Other members of the apatite group have chlorine or hydroxyl that take the place of the fluorine; silicon, arsenic or vanadium replace the phosphorus (and carbonate replace the phosphate group); and strontium, lead, and other elements substitute for the ...

Phosphorus - Element information, properties and uses ...

Phosphorus is not found uncombined in nature, but is widely found in compounds in minerals. An important source is phosphate rock, which contains the apatite minerals and is found in large quantities in the USA and elsewhere. There are fears that 'peak phosphorus' will occur around 2050, after which our sources will dwindle.

Phosphate Deposits - USGS

leaching. 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. Individual deposits of both igneous apatite and marine phos­

Apatite - Wikipedia

Although apatite is the predominant form of mineral phosphorus in the Earth's crust, biological forms (i.e. dental and skeletal apatite) have received most attention in kinetic studies. Dissolution experiments with fluorapatite under geologically relevant conditions demonstrate that rates are

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 …

Apatite: Its uses as a mineral and gemstone

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Occurrence of phosphorus minerals in Australian coal seams ...

Both apatite and a range of aluminophosphate minerals can occur in the one coal sample, although one phosphate mineral variety is usually the dominant component. The apatite and the aluminophosphates most commonly occur as infillings in the pore spaces and cell cavities of inertinite macerals.