Apatite is a group of phosphate minerals, usually hydroxyapatite, fluorapatite and chlorapatite, with high concentrations of OH−, F− and Cl− ion, respectively...

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...

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 Cu(II)...

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...

minerals over a very wide geological range (typically 0.1 Ma to 2000 Ma). Apatite, sphene, zircon, micas and volcanic glass typically contain enough uranium...

as an open pit. The operation was sold to Yara in 2007. The Siilinjärvi apatite mine is the biggest open pit in Finland. Currently the mine comprises two...

Bone mineral (also called inorganic bone phase, bone salt, or bone apatite) is the inorganic component of bone tissue. It gives bones their compressive...

the country rock. Apatite is by far the main gangue mineral while other gangue minerals are tremolite-actinolite and calcite. Apatite is at places evenly...

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...

mineral hydroxyapatite. Apatite is a hard, insoluble compound. Acid (H+), produced especially after a high-sugar meal, attacks the apatite: Ca5(PO4)3OH(s) +...