• Katoite Mineral Data

    www.webmineral.com/data/Katoite.shtml Katoite Crystallography: Cell Dimensions: a = 12.358, Z = 8; V = 1,887.32 Den(Calc)= 2.92 : Crystal System: Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: I a3d : X Ray Diffraction:
  • Katoite: Mineral information, data and localities.

    www.mindat.org/min-2167.html In end-member katoite, the replacement is complete (so x = 3). Previously, the mineral "hibschite" (no longer an IMA-approved species) was considered an intermediate member of the grossular-katoite series, and was defined as Ca 3 Al 2 (SiO 4 ) 3-x (OH) 4x , where x = 0.2-1.5; compositions where x < 0.2 were still considered grossular, whereas ...
  • Minerals

    www.minerals.net/mineral/katoite.aspx The mineral Katoite is the same as Hibschite, but contains less hydroxyl replacing the silicate (In Katoite, x is 0.2 to 1.5). Hibschite and Katoite are white to light yellow, and only occur in tiny crystals, which may be packed together very densely. Katoite and Hibschite are called Hydrogarnets, or Garnets
  • What does katoite mean? - definitions

    www.definitions.net/definition/katoite Definition of katoite in the Definitions.net dictionary. Meaning of katoite. Information and translations of katoite in the most comprehensive dictionary definitions resource on the web.
  • katoite - Wiktionary

    en.wiktionary.org/wiki/katoite katoite An isometric-hexoctahedral mineral containing aluminum, calcium, hydrogen, oxygen, and silicon. References “Katoite” in David Barthelmy, Webmineral Mineralogy Database, 1997–. Anagrams . atokite
  • Katoite Ca3Al2(SiO4 3 x(OH)4x - Handbook of Mineralogy

    handbookofmineralogy.org/pdfs/katoite.pdf Katoite Ca3Al2(SiO4)3¡x(OH)4x (x = 1.5 to 3.0) °c 2001 Mineral Data Publishing, version 1.2 Crystal Data: Cubic. Point Group: 4=m 3 2=m: Octahedra crystals, typically rounded, to 0.3 mm, in thin crusts of columnar aggregates.
  • AMCSD Search Results - Raman Spectroscopy

    rruff.geo.arizona.edu/AMS/minerals/Katoite Katoite: Lager G A, Downs R T, Origlieri M J, Garoutte R: American Mineralogist 87 (2002) 642-647: High-pressure single-crystal X-ray diffraction study of katoite hydrogarnet: Evidence for a phase transition from Ia-3d - I-43d symmetry at 5 GPa: Sample: P = 2.15 GPa _database_code_amcsd 0002792: 12.4286 12.4286 12.4286 90 90 90 Ia-3d
  • Hydrogrossular - Wikipedia

    en.wikipedia.org/wiki/Hydrogrossular katoite: 1.5 < x < 3. Hydrogrossular is a garnet variety in which a Si 4+ is missing from a tetrahedral site. Charge balance is maintained by bonding a H + to each of the four oxygens surrounding the vacant site. Hydrogrossular is found in massive crystal habit, sometimes grown in with idocrase.
  • Controllable hydrogen release via aluminum powder ...

    www.sciencedirect.com/science/article/pii/S2187076413000559 The katoite has a cubic structure with Ia3d space group, the same as grossular Ca 3 Al 2 [SiO 4] 3. The hydrogrossular series, Ca 3 Al 2 [SiO 4] 3 and Ca 3 Al 2 [(OH) 4] 3, can accommodate large quantities of water , . The products including katoite might contain the water inside the lattice during the hydration reaction.
  • Understanding the sulfate attack of Portland cement–based ...

    www.sciencedirect.com/science/article/pii/S0958946520301220 CaSO 4 = anhydrite + bassanite + gypsum, AFm-S = monosulfate, AFm-C = monocarbonate + hemicarbonate, hydrogarnet = katoite + hydrogrossular. In the anode area, the ettringite content in the 0.5–5 mm area increased slowly with the exposure time, and the contents of monocarbonate and hemicarbonate decreased ( Fig. 7 c).