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keilite

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Journal Article
Published: 01 January 2007
American Mineralogist (2007) 92 (1): 204–209.
...Łukasz Karwowski; Ryszard Kryza; Tadeusz A. Przylibski Abstract Keilite, (Fe,Mn,Mg,Ca,Cr)S, from the Zakłodzie enstatite achondrite is described. Forming xenomorphic grains up to 0.5 mm in diameter, the keilite is associated with troilite (or pyrrhotite), Fe-Ni metal, an (Fe,Zn,Mn)S phase...
FIGURES
Journal Article
Published: 01 December 2002
The Canadian Mineralogist (2002) 40 (6): 1687–1692.
...Masaaki Shimizu; Hideto Yoshida; Joseph A. Mandarino Abstract Keilite, (Fe,Mg)S, is a new mineral species that occurs in several meteorites. The original description of niningerite by Keil & Snetsinger (1967) gave chemical analytical data for “niningerite” in six enstatite chondrites. In three...
FIGURES
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Textural settings and mineral associations of <span class="search-highlight">keilite</span> in the Zakłodzie mete...
Published: 01 January 2007
F igure 2. Textural settings and mineral associations of keilite in the Zakłodzie meteorite. ( a ) BSE image of keilite (Ke), troilite/pyrrhotite (Tro/Pyr) and kamacite (FeNi); fine intergrowths of sinoite (Sin) in keilite; below the center, a small grain of (Fe,Zn,Mg,Mn)S is intergrown
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Textural settings and mineral associations of <span class="search-highlight">keilite</span> in the Zakłodzie mete...
Published: 01 January 2007
F igure 1. Textural settings and mineral associations of keilite in the Zakłodzie meteorite. ( a ) and ( b ) show typical textures of keilite (Ke) in association with troilite/pyrrhotite (Tro/Pyr) and metal (FeNi); gray, mostly oval grains are enstatite (En) and somewhat darker interstices
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REFLECTANCE VALUES FOR <span class="search-highlight">KEILITE</span>
Published: 01 December 2002
TABLE 1. REFLECTANCE VALUES FOR KEILITE
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( a ) FeS-MgS-(Mn,Ca,Cr)S ternary with 50%-lines separating the <span class="search-highlight">keilite</span> and...
Published: 01 January 2007
F igure 3. ( a ) FeS-MgS-(Mn,Ca,Cr)S ternary with 50%-lines separating the keilite and niningerite fields; the small trapezoid, enlarged in diagram ( b ), shows the Zakłodzie keilite analyses (small squares and the average X); the approximate compositional range of troilite (Tro) is indicated
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REPRESENTATIVE CHEMICAL COMPOSITIONS OF <span class="search-highlight">KEILITE</span> AND TROILITE IN THE ABEE ME...
Published: 01 December 2002
TABLE 2. REPRESENTATIVE CHEMICAL COMPOSITIONS OF KEILITE AND TROILITE IN THE ABEE METEORITE
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X-RAY POWDER-DIFFRACTION DATA FOR <span class="search-highlight">KEILITE</span> AND NININGERITE
Published: 01 December 2002
TABLE 4. X-RAY POWDER-DIFFRACTION DATA FOR KEILITE AND NININGERITE
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Reflectance spectra of <span class="search-highlight">keilite</span> in air and oil. Curves labeled 1 and 2 are f...
Published: 01 December 2002
F ig . 1. Reflectance spectra of keilite in air and oil. Curves labeled 1 and 2 are for compositions 2 and 5 in Table 2 , respectively.
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The composition of the six grains of <span class="search-highlight">keilite</span> analyzed in this study in term...
Published: 01 December 2002
F ig . 2. The composition of the six grains of keilite analyzed in this study in terms of the triangular diagram FeS – MgS – (Ca,Mn,Cr)S. Results for a grain of oldhamite and one of troilite also are indicated.
Journal Article
Published: 01 July 2012
American Mineralogist (2012) 97 (7): 1226–1233.
... in size) in contact with two or more of enstatite, plagioclase, troilite, tridymite, quartz, and sinoite. Low-Ni iron, martensitic iron, schreibersite, keilite, cristobalite, and graphite, which are also present in the type sample, are not observed to be in contact with buseckite. Buseckite is black under...
FIGURES | View All (9)
Journal Article
Published: 01 November 2012
American Mineralogist (2012) 97 (11-12): 2056–2059.
...; enstatite and troilite are nearby. Low-Ni iron, martensitic iron, tridymite, quartz, cristobalite, sinoite, schreibersite, buseckite, keilite, and graphite, are also present in the type sample. Browneite is yellowish brown and translucent. The mean chemical composition, as determined by electron microprobe...
FIGURES
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( a ) Raman spectra of buseckite, troilite, and <span class="search-highlight">keilite</span> single crystals fro...
Published: 01 July 2012
Figure 6 ( a ) Raman spectra of buseckite, troilite, and keilite single crystals from the Zakłodzie meteorite, rudashevskyite from the Indarch meteorite, and wurtzite from Llallagua, Bolivia. ( b ) Raman spectrum of buseckite obtained under low-laser power ( bottom ) and under high-laser power
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( A ) Sulfur and iron contents measured at Mercury's surface (yellow dots) ...
Published: 01 February 2019
daubréelite, niningerite and keilite. Therefore, the accumulation of different amounts of such a phase in Mercury's lavas is a possible explanation of Mercury's Fe paradox. Exp = experimental. D ata from W eider et al . (2015).
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Meteoritic browneite and alabandite compositions cast in terms of the terna...
Published: 01 November 2012
al. (1995) , Okada et al. (1988) , Patzer et al. (2004) , Rubin (1983b , 1983c , 1984 ), Rubin and Wasson (2011) , and Watters and Prinz (1979) . Also shown are fields for keilite and niningerite. These were constructed from published analyses in Ehlers and El Goresy (1988) , Gannoun et al
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Zinc enriched monosulfides from enstatite-rich meteorites plotted in terms ...
Published: 01 July 2012
. Fields for alabandite, niningerite, and keilite taken from a compilation of the literature are also shown. Rudashevskyite compositions, all of which are from Indarch (EH4), are from Britvin et al. (2008) ; the buseckite composition is from this study. For the other Zn-rich monosulfides ( Buseck
Journal Article
Published: 01 October 2003
American Mineralogist (2003) 88 (10): 1626–1629.
... 4 )(Si 2 O 7 )O(OH). J.L.J. M. Shimizu, H. Yoshida, J.A. Mandarino (2002) The new mineral species keilite, (Fe,Mg)S, the iron-dominant analogue of niningerite. Can. Mineral., 40, 1687–1692. One of six listed electron microprobe analyses has Fe 39.57, Mg 10.36, Mn 3.43, Ca 1.86, Cr 1.98...
Journal Article
Published: 01 May 2016
American Mineralogist (2016) 101 (5): 1217–1221.
...% Mn], keilite [(Fe,Mg)S: 3.4–23.7 wt% Mn], rudashevskyite [(Fe,Zn)S: 1.6–3.6 wt% Mn], buseckite [(Fe,Zn,Mn)S, ~10 wt% Mn], browneite (MnS, ~62 wt% Mn) and pentlandite [(Fe,Ni) 9 S 8 : 0.66–1.1 wt% Mn] ( Keil 1968 , 2007 ; Lin et al. 1991 ; Britvin et al. 2008 ; Ma et al. 2012a , 2012b...
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Journal Article
Journal: Elements
Published: 01 June 2022
Elements (2022) 18 (3): 202–203.
... of Sciences, and election as a Legends Fellow of the Microanalysis Society, in addition to numerous other accolades including the main belt asteroid Keil and the extraterrestrial mineral keilite, (Fe,Mg)S, named in his honor. Klaus was a pioneer in the use of the electron microprobe in meteoritics...
Journal Article
Journal: Elements
Published: 01 June 2022
Elements (2022) 18 (3): 201–203.
... asteroid Keil and the extraterrestrial mineral keilite, (Fe,Mg)S, named in his honor. Klaus was a pioneer in the use of the electron microprobe in meteoritics and in petrology and mineralogy in general. In the early 1960s, he worked with colleagues at NASA Ames Research Center, Ray Fitzgerald and Kurt...