• Niocalite: Mineral information, data and localities.

    www.mindat.org/min-2913.html Niocalite mineral data, information about Niocalite, its properties and worldwide locations. SUPPORT US. If mindat.org is important to you, click here to donate to our Fall 2019 fundraiser! Log In Register.
  • Niocalite Mineral Data

    webmineral.com/data/Niocalite.shtml Visit our Advertisers for Niocalite : A Bijoux Google Search for Niocalite Dakota Matrix Minerals Google Search for Niocalite John Betts Fine Minerals Search for Niocalite McDougall Minerals Google Search for Niocalite Rock and Mineral Shows Google Search for Niocalite Weinrich Minerals, Inc. Google Search for Niocalite. Ask about Niocalite here :
  • What does niocalite mean? - definitions

    www.definitions.net/definition/niocalite Definition of niocalite in the Definitions.net dictionary. Meaning of niocalite. What does niocalite mean? Information and translations of niocalite in the most comprehensive dictionary definitions resource on the web.
  • ALEX STREKEISEN-Niocalite-

    www.alexstrekeisen.it/english/pluto/niocalite.php Niocalite, named for its composition (NIObium, CALcium), is a rare calcium niobium silicate and only three locality are known for Niocalite: Oka (the type locality), Kaiserstuhl (Germany) and Oldoinyo Lengai (Tanzania, Africa). Niocalite was first identified in 1956 by Dr. E.H.Nickel in diamond drill core from the Oka, Quebec.
  • niocalite - Wiktionary

    en.wiktionary.org/wiki/niocalite niocalite A monoclinic-domatic light yellow mineral containing calcium, fluorine, niobium, oxygen, and silicon. Further reading “Niocalite” in David Barthelmy, Webmineral Mineralogy Database, 1997–. “niocalite”, in Mindat.org‎, Hudson Institute of Mineralogy, accessed 29 August 2016. Anagrams
  • Niocalite - RRUFF Database: Raman, X-ray, Infrared, and ...

    rruff.info/Niocalite REFERENCES for Niocalite; American Mineralogist Crystal Structure Database Record: [view record] Anthony J W, Bideaux R A, Bladh K W, and Nichols M C (1990) Handbook of Mineralogy, Mineral Data Publishing, Tucson Arizona, USA, by permission of the Mineralogical Society of America.
  • Niocalite

    www.mindat.org/gm/2913 Honey-brown, tetragonal Niocalite, the large crystal on the right side of the photo is 2 cm long, in Calcite. The Calcite fluoresces a creamy orange colour in SW UV. The characterization of Niocalite says: Niocalite occurs with magnetite, apatite and calcite; perovskite and pyrochlore are absent. The Niocalite layer within the Oka complex is ...
  • Niocalite Mineral Specimen For Sale - Dakota Matrix Minerals

    www.dakotamatrix.com/products/14379/niocalite Niocalite - Yellow prismatic crystals from 1-2mm throughout matrix. . This and many more mineral specimens are available for sale at Dakota Matrix Minerals.
  • Niocalite Ca7Nb(Si2O7 2O3F - Handbook of Mineralogy

    www.handbookofmineralogy.com/pdfs/niocalite.pdf Niocalite Ca7Nb(Si2O7)2O3F °c 2001 Mineral Data Publishing, version 1.2 Crystal Data: Monoclinic. Point Group: m: Crystals prismatic, to 1 cm, with square cross sections and curved faces; larger crystals are tapered at both ends.
  • A COMBINED GEOCHEMICAL AND GEOCHRONOLOGICAL INVESTIGATION ...

    www3.nd.edu/~asimonet/PUBLICATIONS/Chen%20et%20al_%202013_Can_Min.pdf In situ U-Pb ages for niocalite from three carbonatite samples obtained by LA-ICP-MS define a wide range of ages, between ~111 and ~133 Ma. Niocalite from one carbonatite sample yields a bimodal distribution with weighted mean 206Pb/238U ages of 110.1 ± 5.0 Ma and 133.2 ± 6.1 Ma, and overlap those of co-existing apatite for the same sample. Two