• Ramsdellite - Wikipedia

    en.wikipedia.org/wiki/Ramsdellite Ramsdellite (Mn 4+ O 2) is an orthorhombic manganese dioxide mineral. It is relatively uncommon, and is usually found in deposits containing other manganese oxide crystals. Name. Ramsdellite is named after the American mineralogist, Lewis S. Ramsdell (1895–1975). ...
  • Ramsdellite Mineral Data

    webmineral.com/data/Ramsdellite.shtml General Ramsdellite Information : Chemical Formula: MnO2 : Composition: Molecular Weight = 86.94 gm Manganese 63.19 % Mn 100.00 % MnO 2: Oxygen 36.81 % O: 100.00 % 100.00 % = TOTAL OXIDE
  • Ramsdellite | Definition of Ramsdellite by Merriam-Webster

    www.merriam-webster.com/dictionary/ramsdellite Ramsdellite definition is - a mineral consisting of manganese dioxide that is polymorphous with pyrolusite.
  • RAMSDELLITE (Manganese Oxide) - Amethyst Galleries

    www.galleries.com/Ramsdellite Ramsdellite is often a minor constituent of "Wad". The mining term "wad" is used to indicate massive ores that are a mixture of several manganese oxides such as pyrolusite, psilomelane, ramsdellite and others that are difficult to distinguish. Manganese is a strategically valuable metal since it is an essential ingredient in steel and other alloys.
  • Ramsdellite | Article about ramsdellite by The Free Dictionary

    encyclopedia2.thefreedictionary.com/ramsdellite Manganese oxides are mainly constituted by [Mn[O.sub.6]] octahedra with (1 x n) pyrolusite pore structure in ramsdellite family, barium and manganese ore (2 x n) pore structure in psilomelane family, barium, calcium, and manganese family (3 x n) pore structure, and (1 x [infinity]) layered structure manganese oxide minerals [12, 13].
  • Ramsdellite Group: Mineral information, data and localities.

    www.mindat.org/min-39941.html Ramsdellite: Post J E, Heaney P J (2004) Neutron and synchrotron X-ray diffraction study of the structures and dehydration behaviors of ramsdellite and "groutellite" American Mineralogist 89 969-975: 2004: 0: 293: 0017793: Ramsdellite
  • Ramsdellite - Mindat.org

    www.mindat.org/gm/3359 5.2 x 3.4 x 0.5 cm. Ramsdellite is a rare manganese oxide. This is an intergrown plate of equant, splendent and iridescent, black ramsdellite crystals to 5 mm across. Ramsdellite from this small and defunct mine in a remote corner of Arizona was first found, I am told, in the early 1900s.
  • Ramsdellite Mn4+O2 - Handbook of Mineralogy

    handbookofmineralogy.org/pdfs/ramsdellite.pdf Ramsdellite Mn4+O2 c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Orthorhombic. Point Group: 2/m2/m2/m. Crystals, to 1 cm, are commonly pseudomorphs after groutite crystals; platy, fibrous, massive.
  • Crystallized Ramsdellite For Sale - Ramsdellite Crystals ...

    johnbetts-fineminerals.com/jhbnyc/ramsdellite.htm Ramsdellite is an manganese oxide that occurs in pyrolusite deposits and is well known from the Mistake Mine. The ramsdellite specimens for sale below were collected in 1982. To purchase mineral specimens, go to the Online order form. Sizes: (t) = Thumbnail, (m) = Miniature, (c) = Cabinet, (lc) = Large Cabinet ...
  • Preparation and characterization of ramsdellite Li2Ti3O7 ...

    www.sciencedirect.com/science/article/pii/S0013468605003580 Ramsdellite Li 2 Ti 3 O 7 was first synthesized via sol–gel process with good crystallity of an average particle size of 0.175 μm. The product was thoroughly investigated as a lithium intercalation compound, and as an active anode material in asymmetric supercapacitors coupling with activated carbon as cathode.