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lanthanum ores

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Journal Article
Published: 01 February 2006
Mineralogical Magazine (2006) 70 (1): 131–138.
...A. Pring; K. Wallwork; J. Brugger; U. Kolitsch Abstract Paratooite-(La) is a new lanthanum-dominant rare-earth copper carbonate from the Paratoo copper mine, near Yunta, Olary district, South Australia. Paratooite-(La) occurs as sheaves and radiating sprays of blade-like to tabular pale blue...
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Journal Article
Published: 01 September 2005
European Journal of Mineralogy (2005) 17 (5): 703–714.
... the REE, only lanthanum and neodymium appear in major amounts, whereas cerium is always a minor element. La consistently dominates Nd, but in quite variable proportions, while the sum of the two is rather constant near 11–12 wt.% La 2 O 3 +Nd 2 O 3 . On an atomic basis, the La/Nd ratios vary between 1.3...
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Journal Article
Journal: Lithosphere
Published: 22 October 2019
Lithosphere (2019) 11 (6): 821–833.
... better than 5% at the State Key Laboratory of Ore Deposit Geochemistry, Chinese Academy of Sciences (SKLODG), Guiyang, China. The detailed procedure for basic-intermediate rocks was described by Qi et al. (2000) . The Zhiyong basalts display flat or slightly light (L) REE–enriched REE patterns...
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Journal Article
Published: 01 April 2012
Mineralogical Magazine (2012) 76 (2): 411–439.
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Journal Article
Journal: Economic Geology
Published: 01 December 2007
Economic Geology (2007) 102 (8): 1499–1510.
... on the hematite end member of the IOCG ore deposit model type. Copper and gold-bearing hematite-rich breccias formed by repetitive hydrothermal brecciation, milling, and explosive venting within a volcanic setting. High-pressure spalling, chemical corrosion of breccia clasts, and compositional layering within...
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Series: Society of Economic Geologists Guidebook Series
Published: 01 January 1995
DOI: 10.5382/GB.24
EISBN: 9781934969779
... was attributed to surface enrichment (Bell, 1976). Samples collected by Bell (1976) of small drainage basins in the region contained up to 1000 ppm tin in heavy mineral concentrates that were also anomalous in gold, boron, lanthanum, niobium, beryllium, and copper (Figure 16 of Bell, Carpenter, and Feiss, 1980...
Journal Article
Published: 01 October 2019
American Mineralogist (2019) 104 (10): 1469–1480.
... of the formation of lanthanum minerals. If this assumption is correct, then lanthanum minerals, including gasparite-(La) and retzian-(La), should be considered as indicators of the hydrothermal-sedimentary genesis of manganese ores. However, this issue requires further study. According to the second option...
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Journal Article
Published: 01 May 2016
American Mineralogist (2016) 101 (5): 1125–1128.
... of formation of lanthanum perovskites from oxides (La 2 O 3 , Na 2 O, TiO 2 ), are −107.25 ± 2.56, −93.83 ± 6.06, −80.68 ± 5.93, and −33.49 ± 4.26 kJ/mol and enthalpies of formation from elements are −1614.05 ± 5.37, −1596.44 ± 7.68, −1594.03 ± 7.58, and −1577.56 ± 6.36 kJ/mol for Na 0.459 La 0.522 Ti 0.999 O...
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Journal Article
Published: 17 April 2013
Geochemistry: Exploration, Environment, Analysis (2013) 13 (2): 131–143.
... REE lanthanum yttrium hematite kaolinite heavy minerals Tana Belt Geochemical exploration has been for a long time one of the key methods in tracing gold and base metal ore deposits in Finland and other countries in glaciated terrains in the world ( Shilts 1976 ; DiLabio 1990 ; Kauranne...
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Journal Article
Published: 21 May 2018
Mineralogical Magazine (2018) 82 (4): 889–911.
... with garnets, the epidote-supergroup minerals are enriched in V, Cr and Mn (<7 wt.% V 2 O 3 , <5 wt.% Cr 2 O 3 and <3 wt.% MnO). Lanthanum is the dominant REE (up to 11.5 wt.% La 2 O 3 ) in allanite-(La). The composition of epidote-supergroup minerals is controlled by REE Fe 2+ (CaAl) –1 , REE Mg(CaAl...
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Journal Article
Published: 01 October 2012
The Canadian Mineralogist (2012) 50 (5): 1281–1290.
... lanthanum Cordylite is a rare-earth fluorocarbonate, an important source of rare-earth elements for various industrial applications, and has been commercially mined (with other REE minerals, such as synchysite and bastnäsite) at Bayan Obo in Inner Mongolia ( Zhang et al. 1996 , Orris & Grauch...
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Journal Article
Published: 01 August 2010
European Journal of Mineralogy (2010) 22 (4): 613–621.
.... , 2006 ). 06 04 2010 22 02 2010 24 03 2010 © 2010 E. Schweizerbart’sche Verlagsbuchhandlung, D-70176 Stuttgart 2010 arsenoflorencite-(La) Grubependity Lake cirque Prepolar Ural Komi Republic crystal structure alunite supergroup lanthanum aluminium arsenate hydroxide...
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Journal Article
Journal: Economic Geology
Published: 01 December 2019
Economic Geology (2019) 114 (8): 1569–1598.
... samples had LREE/HREE values above 4. Yttrium, lanthanum, cerium, and neodymium are the most abundant of the 15 analyzed REEs by weight percent and account for 72.3 to 92.5% of the total REEs found within each of the waste piles. Similar LREE/HREE values exist for the ore, with LREE/HREE ratios varying...
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Series: Reviews in Economic Geology
Published: 01 January 2016
DOI: 10.5382/Rev.18.02
EISBN: 9781629490922
... rare metal mineralization are commonly subdivided into the Li-Cs-Ta and Nb-Y-F types ( Cerny and Ercit, 2005 ). The latter type, which is enriched in Be, REE, Th, U, Zr, and Sc, has been correlated with peralkaline granite ( Linnen and Cuney, 2005 ). Table 2. Tonnage and Ore Grade of Selected...
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Series: Reviews in Economic Geology
Published: 01 January 2016
DOI: 10.5382/Rev.18.13
EISBN: 9781629490922
... Plateau contents of lanthanum increase to about twice the content in barren sandstone to achieve geometric mean concentrations of 37 ppm. Lower concentrations are reported for ores in the Grants uranium region ( Spirakis et al., 1981 ), which is consistent with the findings of Della Valle and Brookins...
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Journal Article
Published: 01 August 2010
Mineralogical Magazine (2010) 74 (4): 691–713.
...T. Graupner; F. Melcher; H.-E. Gäbler; M. Sitnikova; H. Brätz; A. Bahr Abstract New data on rare earth element ( REE ) concentrations and distribution patterns of columbite-tantalite minerals from Ta-ore provinces worldwide are presented. The REE geochemistry was studied by laser ablation...
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Journal Article
Published: 01 December 2006
Mineralogical Magazine (2006) 70 (6): 609–627.
...J. Brugger; J. Ogierman; A. Pring; H. Waldron; U. Kolitsch Abstract The Paratoo copper deposit, located in the Neoproterozoic to Cambrian Adelaide Geosyncline, South Australia, produced around 360 tons of Cu between 1888 and 1967 from oxidized ores. The deposit is located in the core of a breached...
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Journal Article
Journal: Economic Geology
Published: 01 June 2015
Economic Geology (2015) 110 (4): 1059–1081.
... plants and corresponds to type III or type IV kerogens. Organic matter fragments disseminated in sandstones may also contain significant preore uranium concentration. Framboidal and collomorph ore-stage iron disulfides have moderate to high concentrations of As, Ni, and Co and have a light sulfur isotope...
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Journal Article
Journal: Economic Geology
Published: 01 May 2014
Economic Geology (2014) 109 (3): 713–735.
... alteration, carbonatization, pyritization, and local silicification. The main ore minerals are native gold and subordinate gold tellurides, accompanied by pyrite and minor chalcopyrite, galena, sphalerite, hematite, molybdenite, and Ag-Pb-Bi-bearing tellurides. Gold is concentrated in two generations of thin...
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Series: Geological Society, London, Special Publications
Published: 01 January 2015
DOI: 10.1144/SP393.4
EISBN: 9781862396692
... are among the most important. We discuss the state of knowledge of mineable resources across the periodic table, and how those determinations factor into criticality evaluations. We then illustrate criticality evaluations of the copper ore group elements for the specific example of the UK. Given...
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