phosphorus in apatite

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 ...

Calcium Phosphate Minerals - an overview | ScienceDirect ...

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 the total P is available to biota (Chapter 4).

Phosphorus - Wikipedia

Phosphorus is an essential macromineral for plants, which is studied extensively in edaphology to understand plant uptake from soil systems. Phosphorus is a limiting factor in many ecosystems; that is, the scarcity of phosphorus limits the rate of organism growth.

Apatite - an overview | ScienceDirect Topics

Apatite mineral materials from igneous and metamorphic rocks are easily identified by optical or X-ray diffraction characteristics as in these higher-temperature rocks it is always well crystallized. The apatite formed at low temperatures in sediments or tissues, however, is not well crystallized.

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.

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 - Wikipedia

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 ...

Mineral Resource of the Month: Phosphate Rock | EARTH Magazine

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.

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 ...

The Varied Uses and Forms of Apatite Will Raise Your Eyebrows

As a mineral, apatite is chiefly used as a phosphorus source for the manufacture of fertilizers. Apatite mineral uses also extend to fluoridating water, and a protective coat of apatite on metals prevent it from rusting. One of the primary physical properties of apatite is that, in its mineral form, apatite is very stable and does not easily ...

Apatite Gemstone Information - GemSelect

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 …

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 …

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.

Transformation of apatite phosphorus and non-apatite ...

The so called SMT protocol was then used for the certification of a reference material (BCR 684) in five phosphorus fractions: non-apatite, apatite, inorganic, organic and total phosphorus.

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 in one or the other.

Apatite | Definition of Apatite at

Apatite definition, a common mineral, calcium fluorophosphate, Ca5FP3O12, occurring in individual crystals and in masses and varying in color, formerly used in …

Apatite | Article about apatite by The Free Dictionary

apatite (ăp`ətīt), mineral, a phosphate of calcium containing chlorine or fluorine, or both, that is transparent to opaque in shades of green, brown, yellow, white, red, and purple.Apatite is a minor constituent in igneous and metamorphic rocks. Yellow-green asparagus stone and blue-green manganapatite are used in jewelry.

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 (P) - Chemical properties, Health and ...

Phosphorus in its pure form has a white colour. White phosphorus is the most dangerous form of phosphorus that is known to us. When white phosphorus occurs in nature this can be a serious danger to our health. White phosphorus is extremely poisonous and in many cases exposure to it will be fatal.

Apatite Mineral Data -

Visit our Advertisers for Apatite : Dakota Matrix Minerals Google Search for Apatite John Betts Fine Minerals Search for Apatite McDougall Minerals Google Search for Apatite Rock and Mineral Shows Google Search for Apatite Weinrich Minerals, Inc. Google Search for Apatite. Ask about Apatite here : Ask-A-Mineralogist from the Mineralogical ...

phosphorus in apatite -

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.

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

What Is Apatite Used For? |

Apatite is primarily composed of calcium and phosphorus. This natural abundance in phosphorus makes apatite a useful mineral in several industries. The extracted phosphorus from apatite is utilized in the manufacture of pure chemical compounds, such as sodium phosphate, di-calcium phosphate and mono-calcium phosphate.

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 ...

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

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.

Apatite: Its uses as a mineral and gemstone - Geology

What is Apatite? Apatite is the name of a group of phosphate minerals with similar chemical compositions and physical properties. They are an important constituent of phosphorite, a rock mined for its phosphorus content and used to make fertilizers, acids, and chemicals. Apatite has a relatively consistent hardness and serves as the index mineral for a hardness of five in the Mohs Hardness Scale.

Why is apatite important as a fertilizer that contains ...

Phosphorus (P) is an essential plant nutrient. Soils can be enriched in P by 'recycling' P-rich materials originating with living organisms, such as bonemeal, or by adding rock that contains phosphate. In industrial farming, P enrichment is usuall...

What is the Apatite family? - Quora

Sep 14, 2018· Apatite family is a group that mainly contain phosphorus as a prime mineral. Along with phosphorus mainly elements are present along with it and hence the name e.g. Flourapapite, hydroxylapatite, Chlorapatite etc. containing F-, OH- and Cl- respe...

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