• Apatite Meaning, Powers and History

    Apatite is a calcium phosphate, and a very rare variety of tourmaline, which was discovered in the 1990’ name apatite comes from the word deceiver in Greek, because it is very easily mistaken for other stones, like tourmaline and a hardness on the Moh's scale of only 5, it is rarely faceted as a gemstone, except for collectors.

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  • Kunio Ishikawa's research works | Kyushu University ...

    Since bone apatite is a carbonate apatite containing carbonate in an apatitic structure, carbonate content may be one of the factors governing the osteoconductivity of apatitic bone substitutes.

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  • Insight into Biological Apatite: Physiochemical Properties ...

    Biological apatite is an inorganic calcium phosphate salt in apatite form and nano size with a biological derivation. It is also the main inorganic component of biological hard tissues such as bones and teeth of vertebrates. Consequently, biological apatite has a wide application in dentistry and orthopedics by using as dental fillers and bone substitutes for bone reconstruction and regeneration.

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  • EFFECTS OF EXTERNAL PARENT NUCLIDES ON APATITE …

    whether! or! not they! are! recovered and analyzed with the apatite, and (3) their! U HTh concentrationrelativetoapatite. Modeling theseeffectsshowsthat!detrital!andbedrock! ApatiteHeliumagescanbe~80%youngerthan their!hostdepositionalrock and!upwards! of! 50% older than corresponding AFT ages, respectively. C hemical washing of apatite

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  • Remediation of copper contaminated soil by using different ...

    The particle size of apatite is one of the critical factors that influence the adsorption of heavy metals on apatite in the remediation of heavy metal contaminated soils using apatite. However, little research has been done evaluating the impact of different particle sizes of apatite on immobilization remediation of heavy metal polluted soils in field.

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  • process of ore seperationprocess of phosphate apatite

    Apatite is the defining mineral for 5 on the Mohs scale. Hydroxyapatite, also known as hydroxylapatite, is the major component of tooth enamel and bone mineral. A relatively rare form of apatite in which most of the OH groups are absent and containing many carbonate and acid phosphate substitutions is a large component of bone material.

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  • 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

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  • Apatite Gemisphere

    To cleanse Apatite, wash the gems with soap and slightly warm water. To prevent fractures in this fragile gemstone, avoid any temperature changes or extremes in the water. Then let the Apatite airdry on a …

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  • Apatite: Its uses as a mineral and gemstone

    Apatite is a very spiritual gemstone and it has been said that the stone increases your intuition or psychic power. It also opens up your foreseeing ability. The power of Apatite clarifies your future vision and guides you in the right direction.

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  • WO2016009221A1 Biomolecule separation using apatite ...

    Described herein are methods for purifying a biomolecule of interest by separating the biomolecule of interest from one or more contaminant species using apatite. Also described are methods for producing a solution containing a purified biomolecule starting from a solution containing the biomolecule of interest and one or more contaminant species,the methods involving the use of an apatite matrix.

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  • Apatite Gemstone Information An obscure gem in striking ...

    Jan 03, 2020· Apatite is an interesting gemstone with an unusual mineral makeup. Apatite is actually a wide group of different but similar minerals found all over the world usually composed of calcium phosphate (the material that makes our teeth and bones) plus fluorine, chlorine or hydroxyl.

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  • Blue Apatite: Meanings, Properties and Powers The ...

    Apr 08, 2019· Blue apatite is a form of the mineral group that was named apatite in 1786, although the strict definition of this mineral formation was not determined, as it is used today, until 1860. The mineral apatite comes from a Greek word meaning “to deceive,” because of its unusual origins.

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  • Solubility behavior of apatites in seawater 1

    1 Ii20 wash I I apatite column I “’ peristaltic pump I I I L A Fig. 1. Experimental system for apatite solubility studies. For beaker experiments, column and pump were replaced by a single beaker which was stirred magnetically from below. pH. This procedure was only effective

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  • Apatite Formation: Why It May Not Work as Planned, and How ...

    Jul 29, 2013· Moreover, unexpected remaining impurities (, due to poor washing) may also lead to morphological similarities with biomimetic apatite. Figure 2 Usual platelike morphology (SEM) for biomimetic apatite (example obtained after immersion of a titaniumbased disk in Kim's supersaturated fluid [ 18 ] at 4°C for 4 days then 37°C for 4 days) and ...

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  • (PDF) Controlled Crystallization of Calcium Phosphate Apatites

    in the washing step, as happened in the others atmo ... 573 and 560 cm −1 represent the PO 4 groups of the apatite structure while the weak band around 1400−1450 cm −1 indicates the ...

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  • The ability of a nano hydroxyapatite toothpaste and oral ...

    Oct 01, 2015· 4. Discussion. The weight loss data indicated that both fluoride and the nHA were effective in inhibiting enamel demineralization. Fluoride is widely documented as preventing caries , , , and fluorapatite is known to have a lower solubility product and be much more resistant to acid dissolution than hydroxyapatite , .The formation of a fluoridated apatite was confirmed by the 19 F MASNMR.

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  • Cleaning mineral specimens: a guide for mineral collectors ...

    The washing is essentially placing them in clean water and keeping the water clean as the acid diffuses out of the specimens. It is best if you can set a water supply on a slow trickle into the bucket to constantly provide clean water. Otherwise changing the water as often as possible will work. If you are washing for a full day then a water ...

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  • Remediation of heavy metal contaminated soil by ...

    Jun 04, 2019· After six cycles of soil washing (3 h at a soil washing flow rate of ml min −1), the morphologies of the heavy metal species on the AmiPC electrode were characterized by SEM (Fig. 3a, c ...

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  • IOP Conference Series: Materials Science and Engineering ...

    Apatite contains an average of – % of rare earth oxides [2, 3]. The two primary methods for extracting REEs from apatite are selective acid extraction and physical separation techniques. The use nitric acid for processing of apatite is the most perspective. The total dissolution of the apatite with nitric acid as per the following ...

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  • What is Apatite? A Quick Guide to this LittleKnown ...

    Always take apatite jewelry off when engaging in activities such as swimming, playing sports, gardening, cleaning or washing dishes. Keep apatite jewelry away from heat and shock, as it cannot handle these well. Ensure that the stone does not come into contact with detergents and chemicals, including hairspray, cosmetics or perfumes.

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