• Akdalaite - Wikipedia

    en.wikipedia.org/wiki/Akdalaite Akdalaite is a very rare mineral found in Kazakhstan and has the formula 5Al 2 O 3 ·H 2 O. It was formerly believed to be 4Al 2 O 3 ·H 2 O. It is therefore the same as tohdite an artificially produced phase. Studies on the crystal structure and spectra indicate that this is an aluminium oxide hydroxide. References
  • Akdalaite Mineral Data

    webmineral.com/data/Akdalaite.shtml Akdalaite Crystallography: Axial Ratios: a:c = 1:1.58781 : Cell Dimensions: a = 5.58, c = 8.86, Z = 1; V = 238.91 Den(Calc)= 3.67 : Crystal System:
  • Akdalaite: Mineral information, data and localities.

    www.mindat.org/min-69.html A new occurrence and new data on akdalaite, a retrograde mineral from UHP Whiteschist, Kokchetav Massif, Northern Kazakhstan. International Geology Review, 48(8), 754-764. Karaganda Region
  • Akdalaite dictionary definition | akdalaite defined

    www.yourdictionary.com/akdalaite akdalaite definition: Noun (plural akdalaites) 1. (mineralogy) A mineral with chemical formula 4Al2O3·H2O....
  • akdalaite - Wiktionary

    en.wiktionary.org/wiki/akdalaite akdalaite (plural akdalaites) A white hexagonal mineral with chemical formula 4Al 2 O 3 ·H 2 O found in Kazakhstan. Further reading “Akdalaite” in David Barthelmy, Webmineral Mineralogy Database, 1997–. “akdalaite”, in Mindat.org‎, Hudson Institute of Mineralogy, accessed 29 August 2016.
  • Tohdite: Mineral information, data and localities.

    www.mindat.org/min-29353.html The name akdalaite was substituted for "tohdite" in some publications (e.g., Tilley & Eggleton 1996); however, a mineral likely to be "tohdite" was recently recognized by the CNMMN (Burke & Ferraris 2005). In the latest turn of events, it has been shown that akdalaite has the same properties as synthetic and natural "tohdite."
  • Akdalaite 4Al2O3 H2O - Handbook of Mineralogy

    www.handbookofmineralogy.com/pdfs/akdalaite.pdf Akdalaite 4Al2O3• H2O c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Hexagonal. Point Group: 622 or 6. As hexagonal crystals, to 0.8 mm, tabular to equant; in lenslike aggregates.
  • Structural Chemistry of Akdalaite, Al10O14(OH)2, the ...

    www.mdpi.com/2073-4352/9/5/246 Akdalaite crystallizes in the space group P63mc with lattice parameters of a = 5.6244(3) Å and c = 8.8417(3) Å (SC-XRD) and a = 5.57610(2) Å and c = 8.77247(6) Å (NPD). The crystal structure features Al13O40 Keggin clusters. The structural chemistry of akdalaite is nonideal but broadly conforms to that of ferrihydrite, the nanomineral with ...
  • Surface and mineral structure of ferrihydrite - ScienceDirect

    www.sciencedirect.com/science/article/pii/S0016703712007193 Ferrihydrite (Fh) is an yet enigmatic nano Fe(III)-oxide material, omnipresent in nature that can bind ions in large quantities, regulating bioavailability and ion mobility. ... Fh contains, besides Fe in hexa-coordination, also Fe in tetrahedral coordination, and is isostructural with akdalaite (Al 10 O 14 (OH) 2) ...
  • Akdalaite: Properties - Assignment Point

    www.assignmentpoint.com/science/chemistry/akdalaite-properties.html Akdalaite is a very rare mineral found in Kazakhstan and has the formula 5Al 2 O 3 ·H 2 O. It was formerly believed to be 5Al 2 O 3 ·H 2 O It is, therefore, the same as tohdite an artificially produced phase. Studies on the crystal structure and spectra indicate that this is an aluminum oxide hydroxide.