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Robert T. Downs
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Journal Article
Dondoellite, Ca 2 Fe(PO 4 ) 2 ·2H 2 O, a New Mineral Species Polymorphic with Messelite, from Rapid Creek, Yukon, Canada
Publisher: Mineralogical Association of Canada
Published: 21 October 2022
The Canadian Mineralogist (2022) 60 (5): 837–847.
Journal Article
The Crystal Structure of Malhmoodite from Custer, South Dakota, USA
Publisher: Mineralogical Association of Canada
Published: 19 April 2022
The Canadian Mineralogist (2022) 60 (3): 485–492.
Journal Article
Liudongshengite, Zn 4 Cr 2 (OH) 12 (CO 3 )·3H 2 O, a new mineral of the hydrotalcite supergroup, from the 79 mine, Gila County, Arizona, USA
Hexiong Yang, Ronald B. Gibbs, Cody Schwenk, Xiande Xie, Xiangping Gu, Robert T. Downs, Stanley H. Evans
Publisher: Mineralogical Association of Canada
Published: 13 September 2021
The Canadian Mineralogist (2021) 59 (4): 763–769.
Journal Article
Ferrobobfergusonite, □Na 2 Fe 2+ 5 Fe 3+ Al(PO 4 ) 6 , a new mineral of the bobfergusonite group from the Victory Mine, Custer County, South Dakota, USA
Publisher: Mineralogical Association of Canada
Published: 02 August 2021
The Canadian Mineralogist (2021) 59 (3): 617–627.
Journal Article
Taniajacoite and Strontioruizite, Two New Minerals Isostructural with Ruizite from the N'Chwaning III Mine, Kalahari Manganese Field, South Africa
Publisher: Mineralogical Association of Canada
Published: 25 March 2021
The Canadian Mineralogist (2021) 59 (2): 431–444.
Journal Article
Adanite, a new lead-tellurite-sulfate mineral from the North Star mine, Tintic, Utah, and Tombstone, Arizona, USA
Publisher: Mineralogical Association of Canada
Published: 01 May 2020
The Canadian Mineralogist (2020) 58 (3): 403–410.
Journal Article
From structure topology to chemical composition. XXVIII. Titanium silicates: Jinshajiangite from the Oktyabr'skii Massif, Donetsk Region, Ukraine, a new occurrence
Publisher: Mineralogical Association of Canada
Published: 08 April 2020
The Canadian Mineralogist (2020) 58 (2): 223–229.
Journal Article
Meieranite, Na 2 Sr 3 MgSi 6 O 17 , a New Mineral from the Wessels Mine, Kalahari Manganese Fields, South Africa
Hexiong Yang, Xiangping Gu, Robert T. Downs, Stanley H. Evans, Jaco J. Van Nieuwenhuizen, Robert M. Lavinsky, Xiande Xie
Publisher: Mineralogical Association of Canada
Published: 15 July 2019
The Canadian Mineralogist (2019) 57 (4): 457–466.
Journal Article
Mineralogical Profile of Supergene Sulfide Ore in the Western Copper Area, Morenci Mine, Arizona
Publisher: Mineralogical Association of Canada
Published: 16 May 2019
The Canadian Mineralogist (2019) 57 (3): 391–401.
Journal Article
Laverovite, K 2 NaMn 7 Zr 2 (Si 4 O 12 ) 2 O 2 (OH) 4 F, a New Astrophyllite-supergroup Mineral from Mont Saint-hilaire, QuÉbec, Canada
Elena Sokolova, Maxwell C. Day, Frank C. Hawthorne, Anatoly V. Kasatkin, Robert T. Downs, László Horváth, Elsa Pfenninger-Horváth
Publisher: Mineralogical Association of Canada
Published: 01 March 2019
The Canadian Mineralogist (2019) 57 (2): 201–213.
Journal Article
Petersite-(ce), Cu 2+ 6 Ce(PO 4 ) 3 (OH) 6 ·3H 2 O, a New Mixite Group Mineral from Yavapai County, Arizona, Usa
Publisher: Mineralogical Association of Canada
Published: 01 November 2016
The Canadian Mineralogist (2016) 54 (6): 1505–1511.
Journal Article
Raygrantite, Pb 10 Zn(SO 4 ) 6 (SiO 4 ) 2 (OH) 2 , a New Mineral Isostructural with Iranite, from the Big Horn Mountains, Maricopa County, Arizona, Usa
Publisher: Mineralogical Association of Canada
Published: 01 May 2016
The Canadian Mineralogist (2016) 54 (3): 625–634.
Journal Article
MINERAL ECOLOGY: CHANCE AND NECESSITY IN THE MINERAL DIVERSITY OF TERRESTRIAL PLANETS
Publisher: Mineralogical Association of Canada
Published: 24 July 2015
The Canadian Mineralogist (2015) 53 (2): 295–324.
Journal Article
THE CRYSTAL STRUCTURE OF VLADIMIRITE, WITH A REVISED CHEMICAL FORMULA, Ca 4 (AsO 4 ) 2 (AsO 3 OH)·4H 2 O
Publisher: Mineralogical Association of Canada
Published: 01 August 2011
The Canadian Mineralogist (2011) 49 (4): 1055–1064.
Journal Article
RRUFFITE, Ca 2 Cu(AsO 4 ) 2 ·2H 2 O, A NEW MEMBER OF THE ROSELITE GROUP, FROM TIERRA AMARILLA, CHILE
Publisher: Mineralogical Association of Canada
Published: 01 June 2011
The Canadian Mineralogist (2011) 49 (3): 877–884.
Journal Article
THE CRYSTAL STRUCTURE OF BILLINGSLEYITE, Ag 7 (As,Sb)S 6 , A SULFOSALT CONTAINING As 5+
Publisher: Mineralogical Association of Canada
Published: 01 February 2010
The Canadian Mineralogist (2010) 48 (1): 155–162.
Journal Article
STRUCTURE REFINEMENT OF AN UNTWINNED SINGLE CRYSTAL OF Ag-EXCESS FIZÉLYITE, Ag 5.94 Pb 13.74 Sb 20.84 S 48
Publisher: Mineralogical Association of Canada
Published: 01 October 2009
The Canadian Mineralogist (2009) 47 (5): 1257–1264.
Journal Article
THE CRYSTAL STRUCTURE OF TVALCHRELIDZEITE, Hg 3 SbAsS 3 , AND A REVISION OF ITS CHEMICAL FORMULA
Publisher: Mineralogical Association of Canada
Published: 01 December 2007
The Canadian Mineralogist (2007) 45 (6): 1529–1533.
Journal Article
Rigid-body character of the SO 4 groups in celestine, anglesite and barite
Publisher: Mineralogical Association of Canada
Published: 01 August 1998
The Canadian Mineralogist (1998) 36 (4): 1053–1060.