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serandite

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Journal Article
Published: 02 August 2021
The Canadian Mineralogist (2021) 59 (3): 551–572.
...Aaron J. Lussier; Joel D. Grice; Henrik Friis; Glenn G. Poirier ABSTRACT The compositional series {Na} [ [ M1 + M 2] (Ca 2 X Mn 2–2 X )Si 3 O 8 (OH)] includes the minerals serandite ( X = 0), schizolite ( X = 0.5), and pectolite ( X = 1). Six crystals are structurally and chemically characterized...
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Journal Article
Published: 01 May 2018
European Journal of Mineralogy (2018) 30 (3): 451–463.
.... Minerals with the common crystal-chemical formula M3 ( Me 1+ ) M1,M2 ( Me 2+ ) 2 [Si 3 O 8 (OH)], Me 1+ = Na, Li and Me 2+ = Ca, Mn, Mg, comprising pectolite, Li-bearing pectolite, murakamiite, marshallsussmanite, serandite, and tanohataite were studied. In pectolite and murakamiite two structurally...
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Journal Article
Published: 01 June 2015
Mineralogical Magazine (2015) 79 (3): 671–686.
... = 1.136. The asymmetric unit of barrydawsonite-(Y) has three metal sites: M (1) = Ca, M (2) = Na 0.5 (Y, REE ) 0.5 , M (3) = Na. M (1) and M (2) are octahedrally-coordinated sites, whereas M (3) is [8]-coordinated as in pectolite and serandite. The structural formula for the empirical composition is M (3...
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Journal Article
Published: 01 August 2014
American Mineralogist (2014) 99 (8-9): 1755–1760.
...Edward R. Williams; Mark T. Weller Abstract A variable-temperature powder neutron diffraction study of serandite, Na(Mn,Ca) 2 Si 3 O 8 (OH), has been undertaken over the temperature range 4–800 K to investigate the behavior of the very strong hydrogen bond in this mineral. At 4 K the O(D)…O...
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Journal Article
Published: 01 May 2000
American Mineralogist (2000) 85 (5-6): 745–752.
...Steven D. Jacobsen; Joseph R. Smyth; R. Jeffrey Swope; Robert I. Sheldon Abstract The crystal structure and hydrogen positions of serandite, NaMn 2 [Si 3 O 8 (OH)], have been refined from single-crystal X-ray and time-of-flight neutron diffraction data at ambient conditions. The proton occupies...
FIGURES
Journal Article
Published: 01 June 1998
American Mineralogist (1998) 83 (5-6): 569–576.
...Vera M. F. Hammer; Eugen Libowitzky; George R. Rossman Abstract Polarized infrared absorption spectra of thin, oriented single-crystal slabs of pectolite and serandite were recorded between 4000 and 350 cm (super -1) at 298 and 83 K. The spectra of both minerals show a broad absorption region...
Journal Article
Published: 01 April 1978
American Mineralogist (1978) 63 (3-4): 274–288.
...Y. Ohashi; L. W. Finger Abstract Crystal structures and cation occupancies have been refined using single-crystal X-ray diffraction data for natural specimens of (1) manganoan, intermediate, and calcian bus-tamites; (2) ferroan and manganoan wollastonites; and (3) serandite and manganoan pecto...
Journal Article
Published: 01 April 1976
American Mineralogist (1976) 61 (3-4): 229–237.
...Y. Takeuchi; K. Yasuhiro; T. Yamanaka Abstract The serandite structure has been refined to R = 3.0 percent, using a crystal from Tanohata mine, Japan (approximately 39.9°N, 141.9°E), P 1 , a 7.683(1), b 6.889(1), c 6.747(1) Å, α 90.53(5)°, β 94.12(2)°, γ 102.75(2)°, Z = 2 × [(Mn 1.88 Ca 0.17 Mg...
Journal Article
Published: 01 June 1968
The Canadian Mineralogist (1968) 9 (3): 348–357.
...P. G. Manning The optical absorption spectra of pyroxmangite, rhodonite and serandite show that the pink colors are due primarily to octahedrally-bonded Mn(II). The brown color of bustamite can be attributed to octahedrally-bonded Mn(II) bands superimposed on a strong background absorption...
Journal Article
Journal: AAPG Bulletin
Published: 01 April 1964
AAPG Bulletin (1964) 48 (4): 518.
...Jean Boissonnault; Guy Perrault Serandite from St. Hilaire, Quebec, has the following chemical composition: SiO 2 47.90, Fe 2 O 3 0.08, FeO 0.86, Al 2 O 3 1.20, MnO 33.8, CaO 5.56, MgO 0.03, Na 2 O 6.40, K 2 O 0.00, H 2 O −105°C .20, H 2 O +105°C 2.42, Y 2 O 3 .27. Total 98.73%. X-ray diffraction...
Journal Article
Published: 01 December 1955
American Mineralogist (1955) 40 (11-12): 1022–1031.
...Waldemar T. Schaller Abstract A study of the pertinent recorded analyses of pectolite, schizolite, and serandite, indicates that they are members of an isostructural series from pectolite (4CaO · Na 2 O · 6SiO 2 · H 2 O or Ca 2 NaSi 3 O 8 (OH)) to serandite (4MnO · Na 2 O · 6SiO 2 · H 2 O or Mn 2...
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Polyhedral representations of the crystal structures of <span class="search-highlight">serandite</span> (left) an...
Published: 01 June 2015
F ig . 3. Polyhedral representations of the crystal structures of serandite (left) and barrydawsonite-(Y) (right) projected onto (101) of serandite and (201) of barrydawsonite-(Y), with the b axes of both structures running parallel to the ribbon/chain extension direction. Serandite has
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Back scattered SEM images of characteristic textures. (A) Anhedral tokyoite...
Published: 01 November 2015
Fig. 3. Back scattered SEM images of characteristic textures. (A) Anhedral tokyoite partially replaced by noélbensonite, which appears to be also replaced by late sérandite. (B) Tokyoite replaced by an aggregate of noélbensonite and sérandite. Note baryte and witherite associated
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Back-scattered electron photomicrograph of a zoned marshallsussmanite–seran...
Published: 21 February 2018
Fig. 3. Back-scattered electron photomicrograph of a zoned marshallsussmanite–serandite crystal, the brighter rim (right side of image) representing epitaxial serandite grown on darker marshallsussmanite.
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Thin section photographs. (a) Slide containing an unzoned sugilite-bearing ...
Published: 01 August 2011
zoned alkali assemblages from locality WB-T2: (c) Zoned sugilite-bearing void-fill with a margin of norrishite and albite rimming a serandite-rich core. (d) Small void-fill containing albite, norrishite, serandite and fibrous sugilite sequentially from rim to core. (e) Core of a larger void
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Fracture-filling noélbensonite-cerchiaraite veinlets (dark) cutting a sera...
Published: 01 January 2004
Fig. 1. Fracture-filling noélbensonite-cerchiaraite veinlets (dark) cutting a serandite aggregate (medium grey) in quartz-serandite rock (OU 68677), Woods mine, New South Wales. Field of view: 3×2 mm.
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( a ) Raman spectra of R120109 marshallsussmanite, R050396 pectolite and R0...
Published: 21 February 2018
Fig. 8. ( a ) Raman spectra of R120109 marshallsussmanite, R050396 pectolite and R040056 serandite. Peak positions in these spectra have sufficient separation to permit identification solely by Raman spectroscopy. ( b ) Hydrogen bond stretching modes of R120109 marshallsussmanite, R050396
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Veinlet of cerchiaraite cutting a <span class="search-highlight">serandite</span>-quartz aggregate in OU 68677. R...
Published: 01 January 2004
Fig. 2. Veinlet of cerchiaraite cutting a serandite-quartz aggregate in OU 68677. Replacement of serandite (light grey with cleavages) by cerchiaraite (dark) spreads from the veinlet into the upper part of the field (quartz clear). Plane-polarized light; darkest areas in the vein result from deep
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PYROXENOID MINERALS ISOSTRUCTURAL WITH <span class="search-highlight">SERANDITE</span>–SCHIZOLITE–PECTOLITE
Published: 02 August 2021
TABLE 1. PYROXENOID MINERALS ISOSTRUCTURAL WITH SERANDITE–SCHIZOLITE–PECTOLITE
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SELECTED BOND LENGTHS (Å) FOR <span class="search-highlight">SERANDITE</span>–SCHIZOLITE–PECTOLITE CRYSTALS
Published: 02 August 2021
TABLE 4. SELECTED BOND LENGTHS (Å) FOR SERANDITE–SCHIZOLITE–PECTOLITE CRYSTALS