• Nacrite - Wikipedia

    en.wikipedia.org/wiki/Nacrite Nacrite Al 2 Si 2 O 5 4 is a clay mineral that is polymorphous (or polytypic) with kaolinite.It crystallizes in the monoclinic system. X-ray diffraction analysis is required for positive identification.. Nacrite was first described in 1807 for an occurrence in Saxony, Germany.The name is from nacre in reference to the dull luster of the surface of nacrite masses scattering light with slight ...
  • Nacrite - definition of nacrite by The Free Dictionary

    www.thefreedictionary.com/Nacrite Nacrite (the monoclinic polymorph of kaolinite and halloysite) was tentatively identified in vugs by Mark Bandy (1944) as white hexagonal-tabular microcrystals with pearly luster, especially in younger veins.
  • Nacrite | Article about nacrite by The Free Dictionary

    encyclopedia2.thefreedictionary.com/nacrite Nacrite, a clay mineral, occurs in the Veta Potosi as 1-mm spherules composed of minute, radiating, pearly white crystal plates. Famous mineral localities: Cerro Rico de Potosi, Bolivia The value 7.16 [Angstrom] for the kaolinite monoclinic polytypes dickite (2[M.sub.1]) and nacrite (2[M.sub.2]) counts for [d.sub.002].
  • Nacrite definition and meaning | Collins English Dictionary

    www.collinsdictionary.com/dictionary/english/nacrite Nacrite definition: a clay mineral of the kaolinite group | Meaning, pronunciation, translations and examples
  • Nacrite | Definition of Nacrite by Oxford Dictionary on ...

    www.lexico.com/definition/nacrite What is the definition of nacrite? What is the meaning of nacrite? How do you use nacrite in a sentence? What are synonyms for nacrite?
  • Nacrite - Mindat.org

    www.mindat.org/gm/2826 Nacrite is a rare Kaolinite Subgroup clay species, the polymorph of dickite, halloysite-7A and kaolinite. This unusual specimen is an oxidized cassiterite nodule with a core of earthy yellow-brown nacrite.
  • Pressure-Induced Hydration and Formation of Bilayer Ice in ...

    pubs.acs.org/doi/10.1021/acsearthspacechem.9b00255 Pressure-induced hydration of the clay mineral nacrite, Al2Si2O5(OH)4 is, in contrast to its polymorph kaolinite, partially irreversible. At ambient conditions after pressure release, a majority phase with composition Al2Si2O5(OH)4·2H2O with an intense (002) diffraction peak near d ∼ 8.4 Å has been found. Both in situ X-ray diffraction and simulations based on the density functional theory ...
  • Nacrite Mineral Data

    www.webmineral.com/data/Nacrite.shtml Nacrite Crystallography: Axial Ratios: a:b:c =1.7312:1:3.0503 : Cell Dimensions: a = 8.909, b = 5.146, c = 15.697, Z = 4; beta = 113.7° V = 658.95 Den(Calc)= 2.60
  • Verification - Mindat.org

    www.mindat.org/min-2826.html Large number of pages viewed. While we don't want to limit you viewing as many pages as you would like on mindat.org, we do need to prevent people from automated downloads of our content.
  • Dickite - Wikipedia

    en.wikipedia.org/wiki/Dickite Dickite (Al 2 Si 2 O 5 (OH) 4) is a phyllosilicate clay mineral named after the metallurgical chemist Allan Brugh Dick, who first described it. It is chemically composed of 20.90% aluminium, 21.76% silicon, 1.56% hydrogen and 55.78% oxygen.It has the same composition as kaolinite, nacrite, and halloysite, but with a different crystal structure ().Dickite sometimes contains impurities such as ...