Lead apatite is a generic name for apatite-structure materials that contain lead as the divalent cation. A Copper-doped lead-apatite has been proposed...
3 KB (71 words) - 13:53, 26 September 2023
LK-99 (redirect from Copper-doped lead-apatite)
which— compared to pure lead-apatite (Pb10(PO4)6O): 5 — approximately one quarter of Pb(II) ions in position 2 of the apatite structure are replaced by...
81 KB (6,950 words) - 01:41, 13 May 2024
Apatite is a group of phosphate minerals, usually hydroxyapatite, fluorapatite and chlorapatite, with high concentrations of OH−, F− and Cl− ion, respectively...
31 KB (3,402 words) - 10:45, 30 January 2024
Vanadinite (redirect from Lead vanadate)
Vanadinite is a mineral belonging to the apatite group of phosphates, with the chemical formula Pb5(VO4)3Cl. It is one of the main industrial ores of...
14 KB (1,319 words) - 23:44, 3 January 2024
Pyromorphite (redirect from Green lead ore)
powder-blue caledonite round out this very rich lead ore specimen from an old Leadhills mine. Lead apatite List of minerals Warr, L.N. (2021). "IMA–CNMNC...
9 KB (774 words) - 23:13, 27 January 2024
the material. On July 23, 2023, a Korean team claimed that Cu-doped lead apatite, which they named LK-99, was superconducting up to 370 K, though they...
38 KB (3,543 words) - 05:10, 6 May 2024
detected the occurrence of the Meissner effect. LK-99, copper-doped lead-apatite, has also been proposed as a room-temperature superconductor. There have...
93 KB (9,288 words) - 18:04, 27 April 2024
discovery of LK-99, a supposed room-temperature superconductor based on lead apatite doped with copper. As evidence, they published conductivity measurements...
17 KB (1,936 words) - 16:05, 1 April 2024
hydroxylapatite) (Hap, HAp, or HA) is a naturally occurring mineral form of calcium apatite with the formula Ca5(PO4)3(OH), often written Ca10(PO4)6(OH)2 to denote...
36 KB (3,775 words) - 20:18, 16 March 2024
polysaccharides), in which other materials are embedded: chitin in the periostracum; apatite containing calcium phosphate in the primary biomineralized layer; and a...
91 KB (9,345 words) - 02:02, 3 May 2024
scratch the given material. For example, if some material is scratched by apatite but not by fluorite, its hardness on the Mohs scale would be between 4...
18 KB (1,174 words) - 17:52, 18 May 2024
Radiometric dating (section Uranium–lead dating method)
and meteorites are best used. Older materials can be dated using zircon, apatite, titanite, epidote and garnet which have a variable amount of uranium content...
44 KB (5,517 words) - 02:21, 14 March 2024
over geologic time and weathering of phosphate containing rock such as apatite. Furthermore, phosphorus tends to be a limiting nutrient in aquatic ecosystems...
41 KB (4,508 words) - 23:09, 27 April 2024
fossilised remnants of early sea life; gypsum, anhydrite, fluorite, and apatite are also sources of calcium. The name derives from Latin calx "lime", which...
47 KB (5,908 words) - 10:22, 20 April 2024
Isotope geochemistry (redirect from Lead isotopes (geochemistry))
hydrothermal processes, igneous geology and ore genesis. (U-Th)/He dating of apatite as a thermal history tool USGS: Helium Discharge at Mammoth Mountain Fumarole...
21 KB (2,408 words) - 19:03, 1 April 2024
mineral hydroxyapatite. Apatite is a hard, insoluble compound. Acid (H+), produced especially after a high-sugar meal, attacks the apatite: Ca5(PO4)3OH(s) +...
10 KB (947 words) - 17:42, 30 April 2024
contain other anions in addition to phosphate: Hydroxyapatite Ca5(PO4)3(OH) Apatite Ca10(PO4)6(OH,F,Cl,Br)2 Tetracalcium phosphate (CAS#1306-01-0): Ca4(PO4)2O...
7 KB (602 words) - 03:25, 18 May 2024
Mimetite (category Lead minerals)
Mimetite is a lead arsenate chloride mineral (Pb5(AsO4)3Cl) which forms as a secondary mineral in lead deposits, usually by the oxidation of galena and...
6 KB (480 words) - 20:38, 17 January 2024
"Micro-environmental controls on biomineralization: superficial processes of apatite and calcite precipitation in Quaternary soils, Roussillon, France". Sedimentology...
29 KB (2,574 words) - 23:09, 15 May 2024
magnetite, ilmenite, or ulvospinel. Some sulfides and phosphates (mainly apatite) may also be present. Alkali feldspar granites generally occur with other...
4 KB (344 words) - 21:55, 10 March 2023
Plastic surgery notes additional soft tissue fillers like calcium hydroxy-apatite and polymethylmethacrylate. The advantage of using these is that they are...
14 KB (1,665 words) - 21:32, 1 April 2024
Anthonyite Anthophyllite Antigorite Antimony Antitaenite Antlerite Apachite Apatite (mineral group) Aphthitalite Apophyllite Aragonite Arcanite Archerite Arctite...
41 KB (2,720 words) - 14:09, 13 May 2024
Prolonged increased alkalinity can lead to the formation of crystals of struvite, calcium carbonate, and/or apatite, which can result in struvite kidney...
12 KB (1,254 words) - 00:15, 19 May 2024
Hexafluorosilicic acid (section Lead refining)
fluoride-containing minerals that also contain silicates. Specifically, apatite and fluorapatite are treated with sulfuric acid to give phosphoric acid...
14 KB (1,203 words) - 17:23, 11 May 2024
cryptocrystalline masses (grain sizes < 1 μm) referred to as collophane-sedimentary apatite deposits of uncertain origin. It is also present as hydroxyapatite Ca5(PO4)3OH...
21 KB (2,484 words) - 12:55, 28 January 2024
Closure temperature (section Uranium-lead method)
Mineral Closure temperature (°C) Titanite 600-650 Rutile 400-450 Apatite 450-500 Zircon >1000 Monazite >1000...
5 KB (535 words) - 04:42, 13 May 2024
hexagonal colorless crystal in the chemical class phosphates and the group apatite. It is found in certain parts of central California, primarily Fresno,...
9 KB (957 words) - 20:01, 17 January 2024
uranium-235, and thorium-232. Some minerals that contain thorium include apatite, sphene, zircon, allanite, monazite, pyrochlore, thorite, and xenotime...
8 KB (656 words) - 22:23, 29 April 2024
used as a gemstone. List of minerals Apatite, fluoro-phosphate of calcium Pyromorphite, chloro-phosphate of lead Turquoise, a hydrated phosphate of copper...
5 KB (312 words) - 16:25, 13 March 2023
Samuel J.; Logan, Terry J.; Ryan, James A. (1993). "In situ lead immobilization by apatite". Environmental Science & Technology. 27 (9): 1803–1810. Bibcode:1993EnST...
22 KB (2,749 words) - 05:48, 14 April 2024