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Hanksite, composition

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Journal Article
Published: 01 February 1939
American Mineralogist (1939) 24 (2): 109–115.
...Lewis S. Ramsdell Abstract The composition of 9Na 2 SO 4 • 2Na 2 CO 3 • KC1 for hanksite is verified. There are 2 formula weights in the hexagonal unit cell, which has a= 10.46Å and c = 21.18Å; c/a= 2.02. The space group is either C 6 6 —(C6 3 ) or C 6h 2 —(C6 3 /m), with the morphological evidence...
Journal Article
Published: 01 April 2007
Mineralogical Magazine (2007) 71 (2): 235–240.
...G. R. Mas; L. Bengochea; L. C. Mas Abstract Deposition of two anhydrous sulphate-carbonate minerals, burkeite and hanksite, around a vapour escape in the pipe of a geothermal well of the Copahue field in Argentina is described. These minerals usually occur as efflorescences in saline soils...
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Journal Article
Published: 01 April 1977
American Mineralogist (1977) 62 (3-4): 229–245.
... and octacalcium phosphate. R = 0.084 for 2571 independent reflections. Samuelsonite, apatite, and octacalcium phosphate contain regions in their structures which are isomorphic to each other. Beyond these regions, structural isomorphism ceases to exist. The underlying unit is a column of composition [Ca 4 (PO 4...
Journal Article
Published: 01 June 2016
European Journal of Mineralogy (2016) 28 (3): 677–686.
..., 10–2.647-018, 6–2.231-135, 21–1.970-046. The chemical composition determined by electron-microprobe analysis is (wt.%): Na 2 O 26.99, K 2 O 10.99, CaO 4.27, MgO 0.51, CuO 1.21, ZnO 0.81, PbO 1.58, SO 3 54.93, total 101.30. The empirical formula based on 24 O atoms is Na 7.65 K 2.05 (Ca 0.67 Mg 0.11...
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Journal Article
Published: 01 October 1933
American Mineralogist (1933) 18 (10): 431–434.
...William F. Foshag Abstract The mineral sulfohalite was first described by Hidden and Mackintosh 2 as a chlorosulfate of soda from Searles Lake, California. They record at that time but three known specimens; well formed dodecahedrons reaching 3 cm. in diameter associated with hanksite. The finest...
Journal Article
Journal: GSA Bulletin
Published: 03 March 2021
GSA Bulletin (2021) 133 (11-12): 2319–2334.
... be enriched in SO 4 2– relative to its ancestral composition, while alkalinity and Cl – concentrations would likely vary in concert with the hydrothermal activity of Long Valley Caldera. Table 2. CHEMISTRY OF MODERN OWENS RIVER WATER AND IMPORTANT TRIBUTARIES The earliest lacustrine...
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Journal Article
Published: 29 January 2021
Mineralogical Magazine (2021) 85 (2): 233–241.
... – K P / K C ) = 0.0014 (superior). The chemical composition of dobrovolskyite (10 analyses) was studied using a TESCAN “Vega3” electron microprobe equipped with an Oxford Instruments X-max 50 silicon drift energy-dispersive spectroscopy system, operated at 20 kV and 700 pA, with a beam size...
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Journal Article
Published: 01 January 2007
American Mineralogist (2007) 92 (1): 1–18.
..., gypsum, hanksite, hexahydrite, jarosite, kainite, kieserite, linarite, minamiite, natrojarosite, pickeringite, plumbojarosite, polyhalite, potassium alum (potash alum; kalinite), rozenite, serpierite, sulfohalite, szomolnokite, thaumasite, thenardite, and zincobotryogen. T able 1. Listing...
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Journal Article
Published: 21 January 2019
Mineralogical Magazine (2019) 83 (4): 569–575.
.... No cleavage is observed in the arborescent aggregates. Fracture is irregular to uneven. Parting is not observed. The Mohs’ hardness is 2–3. The calculated density based on empirical formula and single-crystal unit cell parameters is 2.687 g/cm 3 . Table 1. Chemical composition of belomarinaite...
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Journal Article
Journal: Elements
Published: 01 February 2023
Elements (2023) 19 (1): 22–29.
... and surprising mineral occurrences seen in alkaline lakes. We begin with carbonate mineralogy, starting with lakes with Ca- and Mg-rich compositions and finishing with more extreme Na-rich ones. This is followed by a brief description of other minerals that form in alkaline lakes. Finally, we discuss (1) how...
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Journal Article
Published: 08 April 2020
The Canadian Mineralogist (2020) 58 (2): 167–181.
... or brush-like aggregates. D calc is 2.664 g/cm 3 . Natroaphthitalite is optically uniaxial (+), ω = 1.488(2), ε = 1.490(2). The chemical composition (wt.%, electron microprobe) is: Na 2 O 22.54, K 2 O 26.39, SO 3 51.78, total 100.71. The empirical formula calculated based on 8 O apfu is K 1.735 Na 2.252 S...
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Journal Article
Journal: GSA Bulletin
Published: 01 September 2016
GSA Bulletin (2016) 128 (9-10): 1555–1568.
... composition of inflow waters to Searles Lake was changed by distant hydrothermal activity associated with magmatism at Long Valley caldera between 1.27 and 1.0 m.y. ago. Below core depths of 291 m, the evaporites consist of Ca-bearing sulfates (anhydrite, glauberite) and halite; fluid inclusions in the halite...
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Journal Article
Published: 01 October 2007
The Canadian Mineralogist (2007) 45 (5): 1307–1324.
..., cuprocopiapite, cyanochroite, d’ansite, despujolsite, devilline, dietrichite, dorallcharite, epsomite, ettringite, ferrinatrite, ferrohexahydrite, fleischerite, godovikovite, goldichite, görgeyite, goslarite, guildite, halotrichite, hanksite, hexahydrite, hohmannite, jôkokuite, jouravskite, jurbanite, kainite...
Journal Article
Published: 01 January 2000
Reviews in Mineralogy and Geochemistry (2000) 40 (1): 1–112.
... hydrothermal vents on the East Pacific Rise has the general chemical composition MgSO 4 ·{Mg(OH) 2 } x ·(H 2 O) 1−2 x where 0 ≤ x ≤ 0.5. Thus the ‘end-member’ compositions are MgSO 4 (H 2 O) and Mg 3 (SO 4 ) 2 (OH) 2 . Keefer et al. (1981) solved the crystal structure of Mg 4 (SO 4 ) 3 (OH) 2 (H 2 O...
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Journal Article
Published: 01 December 2016
American Mineralogist (2016) 101 (12): 2778–2784.
.... M. Ostrooumov and Y. Taran (2016) Vanadium, V—a new native element mineral from the Colima volcano, State of Colima, Mexico, and implications for fumarole gas composition. Mineralogical Magazine, 80(2), 371–382. Vanadium (IMA 2012-021a), V, is a new mineral found in sublimates of high...
Journal Article
Published: 01 January 2000
Reviews in Mineralogy and Geochemistry (2000) 40 (1): 303–350.
...) described an occurrence of boothite with compositions ranging to cuprian melanterite, but analytical results were not reported. Although morphological data seem to indicate that boothite and cuprian melanterite are isostructural, the two minerals are reportedly separated by a miscibility gap ( Palache et al...
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Journal Article
Published: 01 January 2013
Reviews in Mineralogy and Geochemistry (2013) 75 (1): 7–46.
... ). Secondary ion mass spectrometric (SIMS) analysis shows that ophiolite-hosted moissanite has a distinctive 13 C-depleted isotopic composition (δ 13 C from −18 to −35‰, n = 36), which is significantly lighter than the main carbon reservoir in the upper mantle (δ 13 C near −5‰). Alternatively, significant...
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Journal Article
Published: 01 January 2000
Reviews in Mineralogy and Geochemistry (2000) 40 (1): 541–602.
...-fractionation line suggesting that any heterogeneities that may have existed were homogenized early in solar history ( Hulston and Thode 1965a , b ). The metallic phase of iron meteorites shows anomalies in its 33 S and 36 S compositions, which have been attributed to cosmic-ray spallation ( Hulston and Thode...
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... records the stable isotope composition of the meteoric water that performed the weathering. Mulch et al. (2006) measured δD from in situ kaolinitized Eocene river gravels in paleochannels above the modern Yuba River (north of the area of interest for this review). They found that the gradient of δD...
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