THE CRYSTAL STRUCTURE AND CRYSTAL CHEMISTRY OF MANITOBAITE, IDEALLY (Na16 )Mn2+ 25Al8(PO4)30, FROM CROSS LAKE, MANITOBA

Tait, K. T.; Ercit, T. Scott; Abdu, Yassir A.; Černý, Petr; Hawthorne, Frank C.

doi:10.3749/canmin.49.5.1221

Cited by 6 publications

(4 citation statements)

References 13 publications

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“…Aside from the this, calcium aluminate decahydrate may also introduce alkalinity to the AMD as its pore water is able to achieve a pH of 11.4 to 12.5 (Alonso et al, 2010). 1 (Fiquet et al, 1999) 5 (Comodi et al, 2008) 2 (Fischer & Schneider, 2000) 6 (Tribaudino et al, 2005) 3 (Tait et al, 2011) 7 (Angel et al, 2003) 4 (Calleri et al, 1984) 8 (Matsui & Kimata, 1997)…”

Section: Chemical Compositions Of Materials For Mixed Mediamentioning

confidence: 99%

A Mixed Media Approach Using Locally Available Neutralizing Materials for the Passive Treatment of Acid Mine Drainage

Pocaan,

Turingan,

Tabelin

et al. 2024

Preprint

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Acid mine drainage (AMD)—the strongly acidic and highly polluted effluents from mine sites—are generally managed via active or passive treatment. Active treatment strategies are effective but requires continuous input of energy, chemicals and manpower making them unsustainable in the long term. Because of this, passive treatment is explored as a more sustainable alternative especially for abandoned and legacy mines. Recent studies of the authors have explored the use limestone and waste materials like low-grade ores (LGO), fly ash (FA), and concrete wastes for AMD treatment and found that although these materials generated alkalinity individually, they could only partially remove sulfate (SO42−) and some heavy metals. To address this limitation, a mixed media approach using these four materials is proposed to neutralize the pH of AMD and maximize heavy metals (Cu, Fe, Mn, Ni, and Al) and SO42− removal. A total of twenty (20) mixtures of the four materials were identified based on the response surface methodology (RSM) experimental design. Laboratory-scale experiments using simulated AMD were performed to assess the performance of each mixture by monitoring the pH, oxidation-reduction potential (Eh), electrical conductivity (EC), metal concentrations, and SO42− concentration. Based on the results, three optimized mixed media compositions were identified in wt%: (i) 43% LGO, 40% limestone, 17% CW; (ii) 44% LGO, 51% limestone, 6% CW; and (iii) 89% limestone, 11% LGO. Overall, simulated AMD passively treated by the optimized mixed media compositions met the Philippine effluent standards except for SO42−. Simulated AMD treated by the optimized mixed media achieved pH values of < 9 and removal efficiencies for Cu, Fe, Mn, Ni, and Al of about 99%, 99%, 98%, 70%, and 96%, respectively.

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Section: Chemical Compositions Of Materials For Mixed Mediamentioning

confidence: 99%

A Mixed Media Approach Using Locally Available Neutralizing Materials for the Passive Treatment of Acid Mine Drainage

Pocaan,

Turingan,

Tabelin

et al. 2024

Preprint

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“…The list of twenty most structurally complex minerals known so far given in Table 3 reveals the following most important complexity-generating mechanisms in minerals: the presence of large (sometimes nanometre-scale) clusters such as polyoxometalates or related finite-cluster structures (Krivovichev, 2020b) isolated from each other; such multinuclear atomic units possess a large number of atoms with different topological functions; the examples are ewingite, morrisonite, vanarsite, bouazzerite and postite; as a rule, natural polyoxometalate minerals are also highly hydrated, with the exception of arsmirandite and lehmannite, which are anhydrous polyoxocuprates formed in volcanic fumaroles (Britvin et al , 2020); the presence of large clusters linked together to form three-dimensional frameworks; the examples are ilmajokite and paddlewheelite (both minerals are also highly hydrated, which contributes greatly to their structural complexities); the formation of complex three-dimensional modular frameworks formed by cages of different sizes and topologies; this complexity type corresponds to paulingite-group minerals, fantappièite and sacrofanite (members of the sodalite–cancrinite ABC series (Bonaccorsi and Nazzareni, 2015; Chukanov et al , 2021), tschörtnerite, mendeleevite-(Ce) and rowleyite; the formation of complex layers with different combinations of modules (chains or rings); this type is characteristic for layered uranyl minerals (such as vandendriesscheite and gauthierite) and layered silicates (parsettensite); a high hydration state in salts with complex heteropolyhedral units (alfredstelznerite and voltaite-group minerals); the formation of ordered superstructures of relatively simple structure types; the examples are meerschautite (which is the only sulfide species in the list and was described by Biagioni et al (2016) as an expanded derivative of owyheeite) and manitobaite (that has a fivefold superstructure relative to alluaudite (Tait et al , 2011)); for further discussion on the relations between superstructures and complexity see Krivovichev et al (2019a, 2021), Kornyakov et al (2021) and Kornyakov and Krivovichev (2021). …”

Section: Most Complex Minerals: An Updatementioning

confidence: 99%

“…the formation of ordered superstructures of relatively simple structure types; the examples are meerschautite (which is the only sulfide species in the list and was described by Biagioni et al (2016) as an expanded derivative of owyheeite) and manitobaite (that has a fivefold superstructure relative to alluaudite (Tait et al , 2011)); for further discussion on the relations between superstructures and complexity see Krivovichev et al (2019a, 2021), Kornyakov et al (2021) and Kornyakov and Krivovichev (2021).…”

Section: Most Complex Minerals: An Updatementioning

confidence: 99%

Structural and chemical complexity of minerals: an update

Krivovichev

Кривовичев

Hazen

et al. 2022

MinMag

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The complexities of chemical composition and crystal structure are fundamental characteristics of minerals that have high relevance to the understanding of their stability, occurrence and evolution. This review summarises recent developments in the field of mineral complexity and outlines possible directions for its future elaboration. The database of structural and chemical complexity parameters of minerals is updated by H-correction of structures with unknown H positions and the inclusion of new data. The revised average complexity values (arithmetic means) for all minerals are 3.54(2) bits/atom and 345(10) bits/cell (based upon 4443 structure reports). The distributions of atomic information amounts, chemIG and strIG, versus the number of mineral species fit the normal modes, whereas the distributions of total complexities, chemIG,total and strIG,total, along with numbers of atoms per formula and per unit cell are log normal. The three most complex mineral species known today are ewingite, morrisonite and ilmajokite, all either discovered or structurally characterised within the last five years. The most important complexity-generating mechanisms in minerals are: (1) the presence of isolated large clusters; (2) the presence of large clusters linked together to form three-dimensional frameworks; (3) formation of complex three-dimensional modular frameworks; (4) formation of complex modular layers; (5) high hydration state in salts with complex heteropolyhedral units; and (6) formation of ordered superstructures of relatively simple structure types. The relations between symmetry and complexity are considered. The analysis of temporal dynamics of mineralogical discoveries since 1875 with the step of 25 years show the increasing chemical and structural complexities of human knowledge of the mineral kingdom in the history of mineralogy. In the Earth's history, both diversity and complexity of minerals experience dramatic increases associated with the formation of Earth's continental crust, initiation of plate tectonics and the Great Oxidation event.

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“…Amphibole-supergroup minerals [ [10][11][12] A0- (Hawthorne et al, 2012) are structurally more complex than garnet and can incorporate an extremely wide variety of different ions. An example of a mineral structure with a large number of distinct sites is manitobaite (Na16□)Mn 2+ 25Al8(PO4)30, which has 80 distinct cation sites and 120 distinct anion sites (Tait et al, 2011). This structure clearly departs significantly from Pauling's Rule of Parsimony.…”

Section: Pauling's Third Fourth and Fifth Rulesmentioning

confidence: 99%

Pauling’s rules for oxide-based minerals: A re-examination based on quantum mechanical constraints and modern applications of bond-valence theory to Earth materials

Gibbs

Hawthorne

Brown

2022

American Mineralogist

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Since their introduction in 1929, Pauling's five rules have been used by scientists from many disciplines to rationalize and predict stable arrangements of atoms and coordination polyhedra in crystalline solids; amorphous materials such as silicate glasses and melts; nanomaterials, poorly crystalline solids; aqueous cation and anion complexes; and sorption complexes at mineral-aqueous solution interfaces. The predictive power of these simple yet powerful rules was challenged recently by George et al. (2020), who performed a statistical analysis of the performance of Pauling's five rules for about 5,000 oxide crystal structures. They This is the peer-reviewed, final accepted version for American Mineralogist, published by the Mineralogical Society of America.The published version is subject to change. Cite as Authors (Year) Title. American Mineralogist, in press.

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THE CRYSTAL STRUCTURE AND CRYSTAL CHEMISTRY OF MANITOBAITE, IDEALLY (Na16 )Mn2+ 25Al8(PO4)30, FROM CROSS LAKE, MANITOBA

Cited by 6 publications

References 13 publications

A Mixed Media Approach Using Locally Available Neutralizing Materials for the Passive Treatment of Acid Mine Drainage

A Mixed Media Approach Using Locally Available Neutralizing Materials for the Passive Treatment of Acid Mine Drainage

Structural and chemical complexity of minerals: an update

Pauling’s rules for oxide-based minerals: A re-examination based on quantum mechanical constraints and modern applications of bond-valence theory to Earth materials

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