phosphorus in apatite

Apatite and phosphorus in mantle source regions: An ...

1980-12-1  Because of the high solubility of apatite in basic magmas, phosphorus can be confidently treated as an incompat- ible element in peridotite melting models. Such models, in combination with observed characteristics of basic lavas, indicate that the upper mantle contains ~200 ppm of phosphorus, much less than the chondritic abundance of -900 ppm. 1.

Geochemistry of phosphorus and the behavior of

2019-12-1  The concentration of phosphorus in glassy melt inclusions and rehomogenized nanogranitoids suggests a strong control of melt aluminosity on

Apatite and phosphorus in mantle source regions: An ...

1980-12-1  Because of the high solubility of apatite in basic magmas, phosphorus can be confidently treated as an incompatible element in peridotite melting models. Such models, in combination with observed characteristics of basic lavas, indicate that the upper mantle contains ∼200 ppm of phosphorus, much less than the chondritic abundance of ∼900 ppm.

Phosphorus retention by granulated apatite: assessing ...

2021-1-7  The kinetics and phosphorus retention capacity of granulated apatite are low and do not ensure long-term removal. Access to apatite surface in the granule is hindered by the binder matrix. Hydroxyapatite and carbonated-hydroxyapatite precipitate within the granule onto the binder matrix at low calcium concentration.

Solubilization of Phosphorus from Apatite by Sulfuric

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

Phosphorous availability influences the dissolution of ...

2015-3-4  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

Phosphate Rocks IntechOpen

2016-4-13  Apatite [Ca 5 (PO 4,CO 3) 3 (OH,F,Cl)] is the most abundant phosphate mineral, which accounts for more than 95% of all phosphorus in the Earth’s crust and is found as an accessory mineral in most rock types 1 A rock may be best defined as

Phosphorus dynamics around the sulphate-methane

apatite calculated at all SMTs. CFA authigenesis, however, is insufficient to completely consume pore water phosphate, leading to diffusive loss of phosphate from the SMT. While the upward decrease in phosphate above the SMT is relatively gentle, the significantly steeper phosphate gradient into underlying sediments suggests the

Phosphate Deposits - USGS

2010-8-9  P2O5.1 Most of the phosphorus in the earth's crust, however, occurs in species of the apatite group, Cai0 (P04,C03 )6 (F,Cl,OH)2 (Palache and others, 1951, p. 877; Altschuler and others, 1958; Deer and others, 1962, p. 324). The structure of apatite favors a wide variety of

Characterization of calcium phosphate apatite with ...

2015-1-1  The characterization of calcium phosphate apatite with variable Ca/P ratios prepared by the hydrolysis route and sintering at 1073 K for 4 h have been investigated using XRD, density and linear shrinkage measurements, SEM, TEM, SAED, and EDS. The XRD results show that only a single phase of HA appears in freeze-dried calcium phosphate powders with ratios of Ca/P ranging from 1.00 to 1.80.

Solubilization of Phosphorus from Apatite by Sulfuric

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

Apatite and phosphorus in mantle source regions: An ...

Because of the high solubility of apatite in basic magmas, phosphorus can be confidently treated as an incompatible element in peridotite melting models. Such models, in combination with observed characteristics of basic lavas, indicate that the upper mantle contains ∼200 ppm of phosphorus, much less than the chondritic abundance of ∼900 ppm.

Apatite dissolution kinetics and the long-term

Apatite is ubiquitous in igneous, metamorphic, and sedimentary rocks, although usually in trace amounts. Apatite is the primary source of P and, due to its relatively rapid dissolution rate, can ...

Apatite weathering and the Phanerozoic phosphorus

2000-7-1  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.

(PDF) Apatite weathering and the Phanerozoic

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.

Phosphorous availability influences the dissolution of ...

2015-3-4  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

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 the chemical and pharmaceutical industries. Apatite is also a popular collectors ...

Phosphate Deposits - USGS

2010-8-9  P2O5.1 Most of the phosphorus in the earth's crust, however, occurs in species of the apatite group, Cai0 (P04,C03 )6 (F,Cl,OH)2 (Palache and others, 1951, p. 877; Altschuler and others, 1958; Deer and others, 1962, p. 324). The structure of apatite favors a wide variety of

Which Minerals Include Phosphate? - ThoughtCo

2019-2-13  Reimphoto / Getty Images Apatite (Ca 5 (PO 4) 3 F) is a key part of the phosphorus cycle. It is widespread but uncommon in igneous and metamorphic rocks. 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 ...

Phosphorus Fertilizer: The Original and Commercial

2019-4-30  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.

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 the chemical and pharmaceutical industries. Apatite is also a popular collectors ...

Apatite and phosphorus in mantle source regions: An ...

Because of the high solubility of apatite in basic magmas, phosphorus can be confidently treated as an incompatible element in peridotite melting models. Such models, in combination with observed characteristics of basic lavas, indicate that the upper mantle contains ∼200 ppm of phosphorus, much less than the chondritic abundance of ∼900 ppm.

Apatite dissolution kinetics and the long-term

Apatite is ubiquitous in igneous, metamorphic, and sedimentary rocks, although usually in trace amounts. Apatite is the primary source of P and, due to its relatively rapid dissolution rate, can ...

(PDF) Apatite weathering and the Phanerozoic

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.

A key role for iron-bound phosphorus in authigenic

1996-11-1  The Journal of Marine Research, one of the oldest journals in American marine science, publishes peer-reviewed research articles covering a broad array of topics in physical, biological and chemical oceanography.Articles that deal with processes, as well as those that report significant observations, are welcome. Biological studies involving coupling between ecological and physical

Export of Total, Particulate, and Apatite Phosphorus

2018-1-1  Concentrations of apatite phosphorus (P) have been shown to be greater in the soils of agricultural and disturbed watersheds than in soils of forested watersheds. This observation suggests that

Which Minerals Include Phosphate? - ThoughtCo

2019-2-13  Reimphoto / Getty Images Apatite (Ca 5 (PO 4) 3 F) is a key part of the phosphorus cycle. It is widespread but uncommon in igneous and metamorphic rocks. 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 ...

apatite and phosphorus mining - El Caribe

phosphorus apatite mining crusherasia. phosphorus apatite mining. Phosphorus Wikipedia, the free encyclopedia . Phosphorus is a nonmetallic chemical element with symbol P and atomic number 15. Reviews: 2.6KInquire Now; Apatite Wikipedia. The primary use of apatite is in the manufacture of fertilizer it is a source of phosphorus.

Phosphorus Fertilizer: The Original and Commercial

2019-4-30  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.

土壤和底泥中磷的形态分析 - usts.cn

2013-10-13  (Non-Apatite Phosphorus,NAP)和有机磷(Organic Phosphorus,OP),这种方法称 为W法[7]。但W法有一个缺点,用NaOH提取的磷组分可被沉积物中的钙盐重新 吸附,为了克服这一问题,Hieltjes和Lijklema提出以NH4Cl替代NaOH作为提取剂,

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