• Kentbrooksite - Wikipedia

    en.wikipedia.org/wiki/Kentbrooksite Kentbrooksite is a moderately rare mineral of the eudialyte group, with formula (Na,REE) 15 (Ca,REE) 6 Mn 3 Zr 3 NbSi[(Si 9 O 27) 2 (Si 3 O 9) 2 O 2]F 2 ·2H 2 O. This extended formula shows the presence of cyclic silicate groups and dominance of Si at the M4 site, according to the nomenclature of the eudialyte group. The characteristic features of kentbrooksite, that make it different from ...
  • Kentbrooksite Mineral Data

    webmineral.com/data/Kentbrooksite.shtml PE Kentbrooksite = 192.91 barns/electron U=PE Kentbrooksite x r electron = 559.29 barns/cc. Radioactivity: GRapi = 29,710.50 (Gamma Ray American Petroleum Institute Units) Concentration of Kentbrooksite per GRapi unit = 33.66 (PPM) Kentbrooksite is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.
  • Kentbrooksite: Mineral information, data and localities.

    www.mindat.org/min-7132.html ⓘ Kentbrooksite occurrence (TL) Eur. J. Mineral., 10, 207­-219.; Johnsen O, Grice J D, Gault R A (1998) Kentbrooksite from the Kangerdlugssuaq intrusion, East Greenland, a new Mn-REE-Nb-F end-member in a series within the eudialyte group: Description and crystal structure, European Journal of Mineralogy 10, 207-219
  • Kentbrooksite - Mindat.org - Mines, Minerals and More

    www.mindat.org/gm/7132 Superb, extremely rare pocket crystal of kentbrooksite that have excellent lustre to them. Most crystals from these prolific Russian localities (and others!) form frozen in matrix and are thus dull and lustreless when exposed. This one, however, has superb, sharp crystals that have both gemminess and luster. 1.5 x 1.25 x 1 cm
  • Kentbrooksite - ClassicGems.net

    classicgems.net/gem_kentbrooksite.htm Kentbrooksite Mineral Photos and Locations . More Information : Mindat.org. Webmineral.com . Kentbrooksite is an extremely rare mineral that is a manganese and fluorine rich member of the Eudialyte group of minerals.
  • What does kentbrooksite mean? - definitions

    www.definitions.net/definition/kentbrooksite Definition of kentbrooksite in the Definitions.net dictionary. Meaning of kentbrooksite. What does kentbrooksite mean? Information and translations of kentbrooksite in the most comprehensive dictionary definitions resource on the web.
  • Kentbrooksite Mineral Specimen For Sale

    www.dakotamatrix.com/products/12908/kentbrooksite Kentbrooksite - Four excellent, well-formed orange crystals less than 1mm. . This and many more mineral specimens are available for sale at Dakota Matrix Minerals.
  • Kentbrooksite - Saint-Hilaire

    www.saint-hilaire.ca/en/kentbroo.htm With recent analyses, kentbrooksite was confirmed on samples from Mont Saint-Hilaire. It is one of 4 recent additions from the eudialyte group. More information on the find is available on the Canadian Museum of Nature article on manganokhomyakovite and new eudialyte group.
  • Ferrokentbrooksite - Wikipedia

    en.wikipedia.org/wiki/Ferrokentbrooksite Ferrokentbrooksite is a moderately rare mineral of the eudialyte group, with formula Na 15 Ca 6 (Fe,Mn) 3 Zr 3 NbSi(Si 3 O 9) 2 (Si 9 O 27) 2 O(O,OH,H 2 O) 3 (Cl,F,OH) 2. The original formula was extended form to show the presence of cyclic silicate groups and presence of silicon at the M4 site, according to the nomenclature of eudialyte group. As suggested by its name, it is the (ferrous ...
  • Ferrokentbrooksite Mineral Data

    webmineral.com/data/Ferrokentbrooksite.shtml Kentbrooksite! (Na,REE)15(Ca,REE)6MnZr3NbSi25O74F2•2(H2O) R 3m 3m : Khomyakovite! Na12Sr3Ca6Fe3Zr3W(Si25O73)(O,OH,H2O)3(OH,Cl)2 R 3m 3m : Manganokhomyakovite! Na12Sr3Ca6Mn3Zr3W(Si25O73)(O,OH,H2O)3(OH,Cl)2 R 3m 3m : Oneillite! Na15Ca3Mn3Fe3Zr3Nb(Si25O73)(O,OH,H2O)3(OH,Cl)2 R 3 3