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aphthitalite

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Journal Article
Published: 13 September 2021
The Canadian Mineralogist (2021) 59 (4): 713–727.
...Nadezhda V. Shchipalkina; Igor V. Pekov; Sergey N. Britvin; Natalia N. Koshlyakova; Evgeny G. Sidorov ABSTRACT Six different exsolution types are found in crystals of aphthitalite-group alkali sulfates from exhalations of the active Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia...
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Journal Article
Published: 08 April 2020
The Canadian Mineralogist (2020) 58 (2): 167–181.
...Nadezhda V. Shchipalkina; Igor V. Pekov; Nikita V. Chukanov; Dmitry I. Belakovskiy; Natalia V. Zubkova; Natalia N. Koshlyakova; Sergey N. Britvin; Evgeny G. Sidorov ABSTRACT Natroaphthitalite K(Na,K) 2 Na(SO 4 ) 2 , a new aphthitalite-group mineral, was found in exhalations of the active...
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Journal Article
Published: 30 November 2019
The Canadian Mineralogist (2019) 57 (6): 885–901.
... 4 ] (holotype), (Na 1.54 K 0.22 Ca 0.09 Cu 0.01 Mg 0.01 )[S 1.00 O 4 ] (cotype 1), and Na 1.65 K 0.11 Ca 0.05 Cu 0.04 Mg 0.01 )[S 1.01 O 4 ] (cotype 2). Admixed K and bivalent cations probably stabilize the hexagonal aphthitalite-like structure of metathénardite at room temperature. The crystal...
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Journal Article
Published: 01 August 1951
American Mineralogist (1951) 36 (7-8): 590–602.
... = 1.5034, N z = 1.5048; X -ray powder diffraction data in Tables 1 and 2. Mascagnite and arcanite were not found in the guano studied. Ammonian aphthitalite predominates in a fossil penguin egg analyzed by Mrs. Setlow. Chemical, optical, and x -ray data in Tables 4 and 5; N 0 = 1.4998, N e = 1.5026...
Journal Article
Published: 01 August 1950
American Mineralogist (1950) 35 (7-8): 596–598.
...Clifford Frondel Abstract The name arcanite, originally proposed by Haidinger, has been held in a reserve status for natural K 2 SO 4 . This substance has not hitherto been identified with certainty in nature although it was at one time erroneously supposed to be represented by the aphthitalite, (K...
Journal Article
Published: 01 August 1921
American Mineralogist (1921) 6 (8): 121–125.
...H. S. Washington; H. E. Merwin Abstract The mineral aphthitalite, a non-hydrated sulfate of potassium and sodium, is one of the rarer of the natural soluble sulfates. It has been reported at Vesuvius, 2 where it is rather common and was first discovered in 1795, at Racalmuto in Sicily, 3...
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Type IV exsolution. (a) Aggregates of beige thick tabular crystals with exs...
Published: 13 September 2021
Fig. 6. Type IV exsolution. (a) Aggregates of beige thick tabular crystals with exsolution microtexture composed of aphthitalite and arcanite (violet crystals are johillerite) FOV: 6 mm. (b) Polished section of a crystal on (001) with arcanite lamellae (I) in aphthitalite matrix (II), SEM image
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Example of equilibrium program/evaporation program (EQL/EVP) simulations is...
Published: 03 March 2021
removed, and evaporation begins. (B) Brine chemistry (top) and mineral precipitation (bottom) during open system fractional crystallization. Aph.—aphthitalite. (C) Closed system back-reactions of [1] CaCO 3 → gaylussite, [2] gaylussite → pirssonite, and [3] burkeite + aphthitalite → hanksite. Note
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(A) Tabular crystals of <span class="search-highlight">aphthitalite</span>, enclosed by microcrystalline xenotopi...
Published: 01 June 2009
F ig . 5. (A) Tabular crystals of aphthitalite, enclosed by microcrystalline xenotopic thenardite (AV1443d, thin section, XPL); B, C) intergrowth of aphthitalite, blödite and thenardite (AV1443f, thin section, SEM–BSE, EDS element-distribution map); D) granular aphthitalite and associated
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(A) Tabular crystals of <span class="search-highlight">aphthitalite</span>, enclosed by microcrystalline xenotopi...
Published: 01 June 2009
F ig . 5. (A) Tabular crystals of aphthitalite, enclosed by microcrystalline xenotopic thenardite (AV1443d, thin section, XPL); B, C) intergrowth of aphthitalite, blödite and thenardite (AV1443f, thin section, SEM–BSE, EDS element-distribution map); D) granular aphthitalite and associated
Image
(A) Tabular crystals of <span class="search-highlight">aphthitalite</span>, enclosed by microcrystalline xenotopi...
Published: 01 June 2009
F ig . 5. (A) Tabular crystals of aphthitalite, enclosed by microcrystalline xenotopic thenardite (AV1443d, thin section, XPL); B, C) intergrowth of aphthitalite, blödite and thenardite (AV1443f, thin section, SEM–BSE, EDS element-distribution map); D) granular aphthitalite and associated
Image
(A) Tabular crystals of <span class="search-highlight">aphthitalite</span>, enclosed by microcrystalline xenotopi...
Published: 01 June 2009
F ig . 5. (A) Tabular crystals of aphthitalite, enclosed by microcrystalline xenotopic thenardite (AV1443d, thin section, XPL); B, C) intergrowth of aphthitalite, blödite and thenardite (AV1443f, thin section, SEM–BSE, EDS element-distribution map); D) granular aphthitalite and associated
Image
(A) Tabular crystals of <span class="search-highlight">aphthitalite</span>, enclosed by microcrystalline xenotopi...
Published: 01 June 2009
F ig . 5. (A) Tabular crystals of aphthitalite, enclosed by microcrystalline xenotopic thenardite (AV1443d, thin section, XPL); B, C) intergrowth of aphthitalite, blödite and thenardite (AV1443f, thin section, SEM–BSE, EDS element-distribution map); D) granular aphthitalite and associated
Image
(A) Tabular crystals of <span class="search-highlight">aphthitalite</span>, enclosed by microcrystalline xenotopi...
Published: 01 June 2009
F ig . 5. (A) Tabular crystals of aphthitalite, enclosed by microcrystalline xenotopic thenardite (AV1443d, thin section, XPL); B, C) intergrowth of aphthitalite, blödite and thenardite (AV1443f, thin section, SEM–BSE, EDS element-distribution map); D) granular aphthitalite and associated
Image
(A) Tabular crystals of <span class="search-highlight">aphthitalite</span>, enclosed by microcrystalline xenotopi...
Published: 01 June 2009
F ig . 5. (A) Tabular crystals of aphthitalite, enclosed by microcrystalline xenotopic thenardite (AV1443d, thin section, XPL); B, C) intergrowth of aphthitalite, blödite and thenardite (AV1443f, thin section, SEM–BSE, EDS element-distribution map); D) granular aphthitalite and associated
Image
(A) Tabular crystals of <span class="search-highlight">aphthitalite</span>, enclosed by microcrystalline xenotopi...
Published: 01 June 2009
F ig . 5. (A) Tabular crystals of aphthitalite, enclosed by microcrystalline xenotopic thenardite (AV1443d, thin section, XPL); B, C) intergrowth of aphthitalite, blödite and thenardite (AV1443f, thin section, SEM–BSE, EDS element-distribution map); D) granular aphthitalite and associated
Image
(A) Tabular crystals of <span class="search-highlight">aphthitalite</span>, enclosed by microcrystalline xenotopi...
Published: 01 June 2009
F ig . 5. (A) Tabular crystals of aphthitalite, enclosed by microcrystalline xenotopic thenardite (AV1443d, thin section, XPL); B, C) intergrowth of aphthitalite, blödite and thenardite (AV1443f, thin section, SEM–BSE, EDS element-distribution map); D) granular aphthitalite and associated
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Ratios of major cations in: (a) coexisting metathénardite (Mthn) and vantho...
Published: 13 September 2021
Fig. 2. Ratios of major cations in: (a) coexisting metathénardite (Mthn) and vanthoffite (Vnth) – Type I exsolution; (b) coexisting metathénardite (Mthn) and belomarinaite (Blm) – Type II exsolution; (c) coexisting thénardite (Thn) and aphthitalite (Apht) – Type III exsolution; (d) coexisting
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BSE image of a stalactite showing prismatic trona (NC) and <span class="search-highlight">aphthitalite</span> (A;...
Published: 01 August 2006
F ig . 7. BSE image of a stalactite showing prismatic trona (NC) and aphthitalite (A; white) together with euhedral crystals of kogarkoite-schairerite (Ko). Note that the interstices between the prismatic crystals of aphthitalite are filled by sylvite (KCl).
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The arrangement of anionic tetrahedra in the crystal structures of ( a ) ap...
Published: 01 February 2017
Fig. 1. The arrangement of anionic tetrahedra in the crystal structures of ( a ) aphthitalite; ( b ) aphthitalite with indicated large cation sites (black dots); ( c ) vitusite-(Ce) (sub-cell); and ( d ) dyrnaesite-(La) (black spots indicate Ce1 sites). Projections perpendicular to tetrahedral