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1-20 OF 83 RESULTS FOR
mottramite
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Journal Article
The crystal structure of mottramite, and the nature of CU<-->Zn solid solution in the mottramite-descloizite series
Journal: The Canadian Mineralogist
Publisher: Mineralogical Association of Canada
Published: 01 October 1995
The Canadian Mineralogist (1995) 33 (5): 1119–1124.
Journal Article
Descloizite, Mottramite, and Vanadinite from South West Africa: An Infrared and X-Ray Study
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 August 1967
American Mineralogist (1967) 52 (7-8): 1067–1076.
...Herbert V. R. Von Rahden; Lynton W. R. Dicks Abstract Descloizite, cuprian descloizite, mottramite, and vanadinite from various localities in South West Africa were analysed chemically and by X-ray diffraction and infrared spectroscopy. The X-ray results substantiate previously determined data...
Journal Article
Mottramite or psittacinite—a question of nomenclature
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 April 1934
American Mineralogist (1934) 19 (4): 180–181.
...Waldemar T. Schaller Abstract In the recent paper on psittacinite from Arizona, 2 I considered psittacinite the proper name for this mineral. Bannister, in his more recent paper on this mineral 3 did not accept my conclusion and stated that mottramite was more suitable. This disagreement led...
Image
Micrographs of selected RMMN samples under polarizing optical microscopy (N...
in Re-examination of vesbine in vanadate-rich sublimate-related associations of Vesuvius (Italy): Mineralogical features and origin
> American Mineralogist
Published: 01 September 2024
Figure 2. Micrographs of selected RMMN samples under polarizing optical microscopy (N//). ( a ) Sample C26, azurite on atacamite needles. ( b ) Sample C26, mixed atacamite and malachite, with late azurite. ( c ) Sample C26, atacamite surrounding rounded mottramite concretions. ( d ) Sample P2
Image
SEM-BSE micrographs of samples of Group II (thin sections). ( a ) Sample C2...
in Re-examination of vesbine in vanadate-rich sublimate-related associations of Vesuvius (Italy): Mineralogical features and origin
> American Mineralogist
Published: 01 September 2024
and mottramite in a large area of the sample. ( f ) Sample P18, zoned mottramite concretions with vanadinite core. ( g ) Sample P18, mottramite and vanadinite with banded texture of a Mn-Cu-Si-Al-V-bearing matrix. ( h ) Sample P18, strongly zoned colloform texture of atacamite and a mixed phase (likely vanadate
Image
SEM-BSE micrographs of samples of Group II (thin sections). ( a ) Sample 10...
in Re-examination of vesbine in vanadate-rich sublimate-related associations of Vesuvius (Italy): Mineralogical features and origin
> American Mineralogist
Published: 01 September 2024
Figure 5. SEM-BSE micrographs of samples of Group II (thin sections). ( a ) Sample 1000R-1, zoned bands of vanadinite cluster surrounded by bands of mixed mottramite and a V-Cu-Mn-Zn-K-bearing phase. ( b ) Sample 1000R-1, euhedral stolzite-wulfenite crystal with a thin layer of mottramite
Image
Representative samples of Pb mineralization at Agoujgal: SEM microphotograp...
in Genesis of As-Pb-Rich Supergene Mineralization: The Tazalaght and Agoujgal Cu Deposits (Moroccan Anti-Atlas Copperbelt)
> Economic Geology
Published: 23 October 2020
to malachite. (D). Euhedral mimetite replaced and surrounded by successive generations of conichalcite and calcio-duftite. (E). Filling of cavities by successive yukonite, gartrellite, goethite, conichalcite, calcio-duftite, and mottramite. (F). Successive generations of botryoidal mottramite and goethite
Image
Rowleyite crystals (black) on mottramite (olive green) and quartz; FOV 0.56...
in Rowleyite, [ Na ( NH 4 , K ) 9 Cl 4 ] [ V 2 5 + , 4 + ( P , As ) O 8 ] 6 · n [ H 2 O , Na , NH 4 , K , Cl ] , a new mineral with a microporous framework structure
> American Mineralogist
Published: 01 May 2017
Figure 1 Rowleyite crystals (black) on mottramite (olive green) and quartz; FOV 0.56 mm across.
Image
Image of blue crystals of klöchite in parageneses with orange mottramite, s...
in KLÖCHITE, K□ 2 (Fe 2+ Fe 3+ )Zn 3 [Si 12 O 30 ], A NEW MILARITE-TYPE MINERAL SPECIES FROM THE KLÖCH VOLCANO, STYRIA, AUSTRIA
> The Canadian Mineralogist
Published: 01 August 2011
Fig. 1 Image of blue crystals of klöchite in parageneses with orange mottramite, sanidine and quartz. Field of view 1.5 mm across. Photo: W. Trattner.
Image
Brumadoite (blue) with mottramite (black) on magnesite from the Pedra Preta...
Published: 01 December 2008
F ig . 1. Brumadoite (blue) with mottramite (black) on magnesite from the Pedra Preta mine, Brumado, Bahia, Brazil. The longest dimension of the specimen is 6.5 cm.
Image
(A) Zoned mottramite crystals, surrounded by calcite (calc 2). The dark lay...
Published: 01 May 2007
F ig . 10. (A) Zoned mottramite crystals, surrounded by calcite (calc 2). The dark layers have a higher As content than the clear layers (NA.RO.453a, Gross Otavi). (B) Finely zoned Cu descloizite crystal (NA.RO.432e, Baltika). (C) Poorly zoned, green mottramite growing in a vein (original in Fig
Image
Chemical variability of the mottramite and pyrobelonite from Krettnich. (a)...
in Description, crystal structure, and paragenesis of krettnichite, PbMn 3+ 2 (VO 4 ) 2 (OH) 2 , the Mn 3+ analogue of mounanaite
> European Journal of Mineralogy
Published: 01 January 2001
Fig. 7. Chemical variability of the mottramite and pyrobelonite from Krettnich. (a) Three-dimensional plot illustrating the composition of the A (Pb,Ca) and B (Cu,Mn,Co) sites. (b) Mn vs. As diagram.
Journal Article
Re-examination of vesbine in vanadate-rich sublimate-related associations of Vesuvius (Italy): Mineralogical features and origin
Annamaria Pellino, Giuseppina Balassone, Isabel Abad, Angela Altomare, Fabio Bellatreccia, Piergiulio Cappelletti, Aurelia Falcicchio, Nicola Mondillo, Richard Herrington, Cristiana Isè, Carmela Petti, Mike Rumsey
Journal: American Mineralogist
Publisher: Mineralogical Society of America
Published: 01 September 2024
American Mineralogist (2024) 109 (9): 1626–1645.
...Figure 2. Micrographs of selected RMMN samples under polarizing optical microscopy (N//). ( a ) Sample C26, azurite on atacamite needles. ( b ) Sample C26, mixed atacamite and malachite, with late azurite. ( c ) Sample C26, atacamite surrounding rounded mottramite concretions. ( d ) Sample P2...
Includes: Supplemental Content
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Representative samples of Cu mineralization at Agoujgal: SEM photomicrograp...
in Genesis of As-Pb-Rich Supergene Mineralization: The Tazalaght and Agoujgal Cu Deposits (Moroccan Anti-Atlas Copperbelt)
> Economic Geology
Published: 23 October 2020
and malachite surrounding chlorite and dolomite. (F). Small mottramite grains coating conichalcite needles. (G). Conichalcite replacing a primary mineral along cleavage planes, in a gangue of quartz. (H). Goethite and arseniosiderite replacing a primary mineral along cleavage planes, with cavities filled
Journal Article
Genesis of Vanadium Ores in the Otavi Mountainland, Namibia
Journal: Economic Geology
Publisher: Society of Economic Geologists
Published: 01 May 2007
Economic Geology (2007) 102 (3): 441–469.
...F ig . 10. (A) Zoned mottramite crystals, surrounded by calcite (calc 2). The dark layers have a higher As content than the clear layers (NA.RO.453a, Gross Otavi). (B) Finely zoned Cu descloizite crystal (NA.RO.432e, Baltika). (C) Poorly zoned, green mottramite growing in a vein (original in Fig...
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Electron microprobe analyses of brackebuschite, cuprian and cobaltian pyrob...
in Description, crystal structure, and paragenesis of krettnichite, PbMn 3+ 2 (VO 4 ) 2 (OH) 2 , the Mn 3+ analogue of mounanaite
> European Journal of Mineralogy
Published: 01 January 2001
Table 3. Electron microprobe analyses of brackebuschite, cuprian and cobaltian pyrobelonite, and calcian mottramite associated with krettnichite
Journal Article
Description, crystal structure, and paragenesis of krettnichite, PbMn 3+ 2 (VO 4 ) 2 (OH) 2 , the Mn 3+ analogue of mounanaite
Journal: European Journal of Mineralogy
Publisher: GeoScienceWorld Journals
Published: 01 January 2001
European Journal of Mineralogy (2001) 13 (1): 145–158.
...Fig. 7. Chemical variability of the mottramite and pyrobelonite from Krettnich. (a) Three-dimensional plot illustrating the composition of the A (Pb,Ca) and B (Cu,Mn,Co) sites. (b) Mn vs. As diagram. ...
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SEM-BSE micrographs of samples of Group I (thin sections and unpolished gra...
in Re-examination of vesbine in vanadate-rich sublimate-related associations of Vesuvius (Italy): Mineralogical features and origin
> American Mineralogist
Published: 01 September 2024
) Sample 911R-g, euhedral hexagonal prisms of vanadinite and reniform aggregates of subparallel platy mottramite crystals partly replacing vanadinite. ( i ) Sample 911R-g, mottramite irregular grains and patinas partly surrounding stolzite-wulfenite crystals. ( j ) Sample 911R-g, massive atacamite
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TEM-HRTEMSAED-EDS data of selected Group I samples. ( a ) Sample 902R. HAAD...
in Re-examination of vesbine in vanadate-rich sublimate-related associations of Vesuvius (Italy): Mineralogical features and origin
> American Mineralogist
Published: 01 September 2024
of Zn, as well as traces of Si and Al (hereafter the Au peaks visible in the EDS spectra come from to the gold grids used for TEM sample preparation). ( b ) Sample 911-R. Textural image (top left) of mixed mottramite, chrysocolla vanadinite polycrystalline particles, locally showing very fine-grained
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(A) Karst cavity in the Central orebody filled with sandy internal sediment...
Published: 01 May 2007
), (Karavatu). (D) Convoluted late calcite cements (calc 3) with thin intervals of yellow descloizite (arrow) at Baltika. (E) Mottramite dendrites in karst sediments (Karavatu). (F) Microcrystalline mottramite concretion (Tsumeb West). (G) Yellow internal karst sediments (IS) and brown descloizite cements
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