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Keilite

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Formula:
(Fe
2+
 
,Mg)S
System:Isometric
Name:Named after Klaus Keil, Professor at the University of Hawaii, Honolulu, Hawaii, USA.


The iron analogue of Niningerite.

Classification of Keilite

IMA status:Approved 2001
Strunz 8th edition ID:2/C.15-15
Nickel-Strunz 10th (pending) edition ID:2.CD.10

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
C : Metal Sulfides, M: S = 1: 1 (and similar)
D : With Sn, Pb, Hg, etc.
Dana 7th edition ID:2.8.1.9
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Type Occurrence of Keilite

Type Locality:Abee meteorite, Abee, Alberta, Canada
Geological Setting of type material:enstatite chondrite

Physical Properties of Keilite

Lustre:Metallic
Diaphaneity (Transparency):Opaque

Crystallography of Keilite

Crystal System:Isometric
Class (H-M):m3m (4/m 3 2/m) - Hexoctahedral
Space Group:Fm3m {F4/m 3 2/m}
Cell Parameters:a = 5.17Å
Unit Cell Volume:V 138.19 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction:
d-spacingIntensity
2.985 (8)
2.585 (100)
1.828 (60)
1.492 (15)
1.292 (7)
1.156 (13)
1.055 (10)

Optical Data of Keilite

Type:Isotropic
Colour in reflected light:grey

Chemical Properties of Keilite

Formula:
(Fe
2+
 
,Mg)S
Simplified for copy/paste:(Fe2+,Mg)S
All elements listed in formula:Fe, Mg, S

Relationship of Keilite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
2.CD.05Herzenbergite
(Sn,Pb)SnS
 
2
2.CD.05Teallite
(Pb,Sn)SnS
 
2
2.CD.10Alabandite
Mn
2+
 
S
2.CD.10Altaite
PbTe
2.CD.10Clausthalite
PbSe
2.CD.10Galena
PbS
2.CD.10Niningerite
(Mg,Fe
2+
 
,Mn
2+
 
)S
2.CD.10Oldhamite
(Ca,Mg)S
2.CD.15aCinnabar
HgS
2.CD.15bHypercinnabar
HgS

Other Names for Keilite

Synonyms:
IMA2001-053
Other Languages:
German:Keilit
Russian:Кейлит
Simplified Chinese:硫镁铁矿
Traditional Chinese:硫鎂鐵礦

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Keilite

Reference List:

- +
Canadian Mineralogist (2002): 40: 1687-1692.

Canadian Mineralogist (2003): 41: 814.

Internet Links for Keilite

Search Engines:
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  • External Links:
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  • Look for Keilite on Wikipedia
  • Look for Keilite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Keilite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
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  • Localities for Keilite

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Antarctica
     
    • Eastern Antarctica
      • Transantarctic Mts
        • Pecora Escarpment
          • LaPaz Icefield
    Izawa, M. R. M., Flemming, R. L., Banerjee, N. R. & McCausland, P. J. A. (2011) Micro-X-ray diffraction assessment of shock stage in enstatite chondrites: Meteoritics & Planetary Science 46 (5): 638-651. (May 2011)
    Canada
     
    • Alberta
      • Abee
    Shimizu M, Yoshida H, Mandarino J A (2002) The new mineral species keilite, (Fe,Mg)S, the iron-dominant analogue of niningerite, The Canadian Mineralogist 40, 1687-1692
    France
     
    • Midi-Pyrénées
      • Haute-Garonne
    Shimizu M, Yoshida H, Mandarino J A (2002) The new mineral species keilite, (Fe,Mg)S, the iron-dominant analogue of niningerite, The Canadian Mineralogist 40, 1687-1692
    Pakistan
     
    • Punjab
    Shimizu M, Yoshida H, Mandarino J A (2002) The new mineral species keilite, (Fe,Mg)S, the iron-dominant analogue of niningerite, The Canadian Mineralogist 40, 1687-1692
    Poland
     
    • Lubelskie
      • Zamość
    Przylibski, T. A., Jakubowski, T., Karwowski, L., Kryza, R. & Uszczek, K. (2011) New Data on Graphite from the Zaklodzie Enstatite Achondrite (Abstract id. 5198). Meteoritics & Planetary Science 46, Supplement: A193. (July 2011); Ma, C., Beckett, J. R. & Rossman, G. R. (2012) Discovery of Buseckite, (Fe,Zn,Mn)S, a New Mineral in Zaklodzie, an Ungrouped Enstatite-Rich Achondrite. Lunar and Planetary Science Conference XLIII. LPI Contribution No. 1659, id.1520. (March 2012)
    Sudan
     
    • Nar an Nil
    Addi Bischoff, Mariam Horstmann, Andreas Pack, Matthias Laubstein & Siegfried Haberer (2010). Asteroid 2008 TC3—Almahata Sitta: A spectacular breccia containing many different ureilitic and chondritic lithologies. Meteoritics & Planetary Science 45, (#10-11), 1638-1657-1667. (Oct-Nov 2010).
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