• Akhtenskite - Wikipedia

    en.wikipedia.org/wiki/Akhtenskite Akhtenskite is a manganese oxide mineral with the chemical formula of MnO 2 (or: ε-Mn 4+ O 2) that was named after the Akhtensk deposit in Russia, where it was first discovered and noted in 1979. It can be found in the Akhtensk brown ironstone deposit, in the southern Ural Mountains, on Mt. Zarod, on the Sikhote-Alin Mountains, and in the Primorskiy Krai, all in Russia.
  • Akhtenskite Mineral Data

    webmineral.com/data/Akhtenskite.shtml General Akhtenskite Information : Chemical Formula: Mn++++O2 : Composition: Molecular Weight = 86.94 gm Manganese 63.19 % Mn 100.00 % MnO 2: Oxygen 36.81 % O: 100.00 % 100.00 % = TOTAL OXIDE
  • What does Akhtenskite mean? - definitions

    www.definitions.net/definition/akhtenskite Definition of Akhtenskite in the Definitions.net dictionary. Meaning of Akhtenskite. What does Akhtenskite mean? Information and translations of Akhtenskite in the most comprehensive dictionary definitions resource on the web.
  • Akhtenskite MnO2 - Handbook of Mineralogy

    www.handbookofmineralogy.org/pdfs/akhtenskite.pdf Akhtenskite MnO2 c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Hexagonal. Point Group: 6/m2/m2/m. As microscopic crystals, flaky to platy on {001}, in parallel aggregates, sometimes in rows at 120 , probably due to replacement of an earlier hexagonal mineral; as flaky polycrystalline aggregates.
  • Akhtenskite Mineral Data

    webmin.mindat.org/data/Akhtenskite.shtml Physical Properties of Akhtenskite : Color: Gray, Black. Optical Properties of Akhtenskite : Optical Data: NCalc= 2.8 - from Gladstone-Dale relationship (KC = 0.394) where Ncalc=Dcalc*KC+1 NCalc= 2.58 - from Gladstone-Dale relationship (KC = 0.394) where Ncalc=Dmeas*KC+1 : Calculated Properties of Akhtenskite
  • Akhtenskite - Assignment Point

    www.assignmentpoint.com/science/chemistry/akhtenskite.html Akhtenskite is a manganese oxide mineral with the chemical formula of MnO 2 that was named after the Akhtensk deposit in Russia, where it was first discovered and noted in 1979. It is a rare grey or black mineral containing manganese and oxygen. It was named after its discovery locality in Russia. It can be found in the Akhtensk brown ironstone deposit, in the southern Ural Mountains, on Mt ...
  • Transformed Akhtenskite MnO2 from Mn3O4 as Cathode for a ...

    pubs.acs.org/doi/10.1021/acssuschemeng.8b02502 Transformed Akhtenskite MnO 2 from Mn 3 O 4 as Cathode for a Rechargeable Aqueous Zinc Ion Battery Lulu Wang College of Chemistry and Molecular Engineering, Beijing National Laboratory for Molecular Sciences, Peking University, 202, Chengfu Road, Beijing 100871, P. R. China
  • Akhtenskite-nsutite phases: Polymorphic transformation ...

    www.sciencedirect.com/science/article/abs/pii/S0925838819342227 Two different MnO 2 polymorphs, namely akhtenskite (ε-form) and nsutite (γ-form) were obtained from the comproportionation reaction between Mn 2+ and MnO 4 −.The conditions that administer the transformation between both phases i.e. temperature, reflux time and concentration of reactants were explored.
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  • Adsorptive removal of arsenic using a novel akhtenskite ...

    www.sciencedirect.com/science/article/pii/S0959652614011081 Characterizations revealed that MnO 2 was of the epsilon type (akhtenskite) and BT9 was α-FeOOH (Goethite), with poor crystallinity and a high specific surface area (BET = 232 m 2 g −1). The adsorption isotherms, fitted by the Langmuir model, showed that the uptake of As(III) (8.03 mg g −1 ) by BT9 was approximately quadrupled when its ...