Database of Raman spectroscopy, X-ray diffraction and chemistry of minerals

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Sep 7, 2023
- Tyrrellite
  - Mineral Comment changed from
    Robinson S C, Brooker E J (1952) Notes and news: a cobalt-nickel-copper selenide from the Goldfields District, Saskatchewan, American Mineralogist 37, 542-544
    
    Chemical formula revised:
    Yang H, Hubler D K, Lavina B, Downs R T, Costin G (2007) Tyrrellite, Cu(Co_0.68Ni_0.32)₂Se₄, isostructural with spinel, Acta Crystallographica C63, i73-i74
    to
    Defined with chemical formula Co₃Ni₂Cu_3.5Se_9.5:
    Robinson S C, Brooker E J (1952) Notes and news: a cobalt-nickel-copper selenide from the Goldfields District, Saskatchewan, American Mineralogist 37, 542-544
    
    Chemical formula changed to (Co,Cu,Ni)₃Se₄:
    Machatschki F, Stradner E (1952) Ein Selenid-Mineral vom Spinelltyp. Oesterreische Akademie der Wissenschaften, Mathematich-Naturwissenschaftliche Klasse, Sitzungsberichte 89, 211-213
    
    After a crystal structure determination, the chemical formula is changed again:
    Yang H, Hubler D K, Lavina B, Downs R T, Costin G (2007) Tyrrellite, Cu(Co_0.68Ni_0.32)₂Se₄, isostructural with spinel, Acta Crystallographica C63, i73-i74
Oct 13, 2017
- Tyrrellite
  - IMA Ideal Chemistry changed from "(Co,Cu,Ni)₃Se₄" to "Cu(Co,Ni)₂Se₄"
Feb 21, 2016
- Tyrrellite
  - RRUFF Ideal Chemistry changed from "Cu(Co,Ni)₂Se₄" to "Cu²⁺(Co³⁺,Ni³⁺)₂Se^2-₄"
  - Mineral Comment changed from
    Robinson S C, Brooker E J (1952) Notes and news: a cobalt-nickel-copper selenide from the Goldfields District, Saskatchewan, American Mineralogist 37, 542-544
    
    Chemical formula revised:
    Yang H, Hubler D K, Lavina B, Downs R T, Costin G (2007) Tyrrellite, Cu(Co0.68Ni0.32)2Se4, isostructural with spinel, Acta Crystallographica C63, i73-i74
    to
    Robinson S C, Brooker E J (1952) Notes and news: a cobalt-nickel-copper selenide from the Goldfields District, Saskatchewan, American Mineralogist 37, 542-544
    
    Chemical formula revised:
    Yang H, Hubler D K, Lavina B, Downs R T, Costin G (2007) Tyrrellite, Cu(Co_0.68Ni_0.32)₂Se₄, isostructural with spinel, Acta Crystallographica C63, i73-i74
May 10, 2008
- Tyrrellite
  - IMA Ideal Chemistry changed from "Co₃Se₄" to "(Co,Cu,Ni)₃Se₄"
  - Mineral Comment changed from
    Robinson S C, Brooker E J (1952) Notes and news: a cobalt-nickel-copper selenide from the Goldfields District, Saskatchewan, American Mineralogist 37, 542-544
    to
    Robinson S C, Brooker E J (1952) Notes and news: a cobalt-nickel-copper selenide from the Goldfields District, Saskatchewan, American Mineralogist 37, 542-544
    
    Chemical formula revised:
    Yang H, Hubler D K, Lavina B, Downs R T, Costin G (2007) Tyrrellite, Cu(Co0.68Ni0.32)2Se4, isostructural with spinel, Acta Crystallographica C63, i73-i74
Jun 3, 2007
- Tyrrellite
  - RRUFF Ideal Chemistry changed from "(Cu,Co,Ni)₃Se₄" to "Cu(Co,Ni)₂Se₄"
Apr 13, 2007
- Tyrrellite
  - IMA Ideal Chemistry changed to "Co₃Se₄"