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- Hydrotalcite abstract "Hydrotalcite is a layered double hydroxide of general formula (Mg6Al2(CO3)(OH)16·4(H2O), whose name is derived from its resemblance with talc and its high water content. The layers of the structure may stack in different ways, to produce a 3-layer rhombohedral structure (3R Polytype), or a 2-layer hexagonal structure (2H polytype) which was formerly known under the name manasseite. The two polytypes are often intergrown. The carbonate anions that lie between the structural layers are weakly bound, so hydrotalcite has anion exchange capabilities.It was first described in 1842 for an occurrence in a serpentine - magnesite deposit in Snarum, Modum, Buskerud, Norway. It occurs as an alteration mineral in serpentinite in association with serpentine, dolomite and hematite.Hydrotalcite has been studied as potential getter for iodide in order to scavenge the long-lived 129I (T1/2 = 15.7 million years) (and also other fission products such as 79Se (T1/2 = 295 000 years) and 99Tc, (T1/2 = 211 000 years)) present in spent nuclear fuel to be disposed under oxidising conditions in volcanic tuff at the Yucca Mountain nuclear waste repository. Unfortunately carbonate easily replaces iodide in its interlayer. Another difficulty arising in the quest of an iodine getter for radioactive waste is the long-term stability of the sequestrant that must survive over geological time scales. Layered Double Hydroxides are well known for their anion exchange properties.Hydrotalcite is also used as an antacid.".
- Hydrotalcite thumbnail Hydrotalcite-200667.jpg?width=300.
- Hydrotalcite wikiPageID "23127453".
- Hydrotalcite wikiPageRevisionID "586915592".
- Hydrotalcite birefringence "δ = 0.016".
- Hydrotalcite caption "Hydrotalcite with serpentine, Snarum, Modum, Buskerud, Norway. Size: 8.4 x 5.2 x 4.1 cm".
- Hydrotalcite category Carbonate_minerals.
- Hydrotalcite cleavage "{0001}, perfect".
- Hydrotalcite color "White with possible brownish tint".
- Hydrotalcite diaphaneity "Transparent".
- Hydrotalcite formula "Mg6Al2CO316·4".
- Hydrotalcite gravity "2.03".
- Hydrotalcite habit "Subhedral platey crystals, lamellar-fibrous, rarely euhedral prismatic; commonly foliated, massive".
- Hydrotalcite hasPhotoCollection Hydrotalcite.
- Hydrotalcite luster "Satiny to greasy or waxy".
- Hydrotalcite mohs "2".
- Hydrotalcite name "Hydrotalcite".
- Hydrotalcite opticalprop "Uniaxial".
- Hydrotalcite other "Greasy feel".
- Hydrotalcite refractive "nω = 1.511 - 1.531 nε = 1.495 - 1.529".
- Hydrotalcite streak "White".
- Hydrotalcite strunz "5".
- Hydrotalcite symmetry "H-M symbol: 2/m".
- Hydrotalcite symmetry "Space group: Rm".
- Hydrotalcite symmetry "Trigonal hexagonal scalenohedral".
- Hydrotalcite system Trigonal_crystal_system.
- Hydrotalcite tenacity "Flexible, not elastic".
- Hydrotalcite unitCell "a = 3.065 Å, c = 23.07 Å; Z = 3/8;".
- Hydrotalcite subject Category:Aluminium_minerals.
- Hydrotalcite subject Category:Carbonate_minerals.
- Hydrotalcite subject Category:Magnesium_minerals.
- Hydrotalcite type Abstraction100002137.
- Hydrotalcite type AluminiumMinerals.
- Hydrotalcite type CarbonateMinerals.
- Hydrotalcite type MagnesiumMinerals.
- Hydrotalcite type Material114580897.
- Hydrotalcite type Matter100020827.
- Hydrotalcite type Mineral114662574.
- Hydrotalcite type Part113809207.
- Hydrotalcite type PhysicalEntity100001930.
- Hydrotalcite type Relation100031921.
- Hydrotalcite type Substance100019613.
- Hydrotalcite type ChemicalSubstance.
- Hydrotalcite type Mineral.
- Hydrotalcite type ChemicalObject.
- Hydrotalcite type Thing.
- Hydrotalcite comment "Hydrotalcite is a layered double hydroxide of general formula (Mg6Al2(CO3)(OH)16·4(H2O), whose name is derived from its resemblance with talc and its high water content. The layers of the structure may stack in different ways, to produce a 3-layer rhombohedral structure (3R Polytype), or a 2-layer hexagonal structure (2H polytype) which was formerly known under the name manasseite. The two polytypes are often intergrown.".
- Hydrotalcite label "Hydrotalciet".
- Hydrotalcite label "Hydrotalcite".
- Hydrotalcite label "Hydrotalcite".
- Hydrotalcite label "Hydrotalkit".
- Hydrotalcite label "Idrotalcite".
- Hydrotalcite label "ハイドロタルク石".
- Hydrotalcite sameAs Hydrotalkit.
- Hydrotalcite sameAs Hydrotalcite.
- Hydrotalcite sameAs Idrotalcite.
- Hydrotalcite sameAs ハイドロタルク石.
- Hydrotalcite sameAs Hydrotalciet.
- Hydrotalcite sameAs m.0ch3nns.
- Hydrotalcite sameAs Q167525.
- Hydrotalcite sameAs Q167525.
- Hydrotalcite sameAs Hydrotalcite.
- Hydrotalcite wasDerivedFrom Hydrotalcite?oldid=586915592.
- Hydrotalcite depiction Hydrotalcite-200667.jpg.
- Hydrotalcite isPrimaryTopicOf Hydrotalcite.
- Hydrotalcite name "Hydrotalcite".
