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Kuratite

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D'Orbigny meteorite, Buenos Aires, Argentina
© Dept. of Mineralogy and Petrography, Natural History Museum Vienna




Formula:
Ca
 
2
(Fe
2+
5
Ti)O
 
2
[Si
 
4
Al
 
2
O
 
18
]
System:Triclinic
Member of:Aenigmatite Group > Sapphirine Supergroup
Name:
Named for Dr. Gero Kurat (1938-2009), meteorite researcher and Curator of the Meteorite Collection at the Natural History Museum Vienna. He had originally described the mineral as an unnamed phase.
This page provides mineralogical data about Kuratite.

Classification of Kuratite

IMA status:Approved 2013
mindat.org URL:http://www.mindat.org/min-44312.html
Please feel free to link to this page.

Type Occurrence of Kuratite

Type Locality:D'Orbigny meteorite, Buenos Aires, Argentina
General Appearance of Type Material:As euhedral to anhedral crystals, < 20 μm in size, within a rim of olivine intergrowths at the contact between Fe sulfide spherules and the space-filling hedenbergite in the D'Orbigny meteorite
Place of Conservation of Type Material:Type material is deposited in the collections of the Naturhistorisches Museum Wien, Vienna, Austria, inventory number Section D’Orbigny C-N1172-NH Wien
Geological Setting of type material:In angrite (an achondritic meteorite)
Associated Minerals at type locality:
WhitlockiteOlivineHedenbergite

Crystallography of Kuratite

Crystal System:Triclinic
Class (H-M):1 - Pinacoidal
Space Group:P1
Cell Parameters:a = 10.513(7) Å, b = 10.887(7) Å, c = 9.004(18) Å
α = 105.97(13)°, β = 96.00(12)°, γ = 124.82(4)°
Ratio:a:b:c = 0.966 : 1 : 0.827
Unit Cell Volume:V 767.39 ų (Calculated from Unit Cell)
Morphology:Euhedral to anhedral crystals. Faces observed: (0-11), (0-21) and (03-1)
Twinning:twin plane(0-11)
X-Ray Powder Diffraction:
d-spacingIntensity
2.97(
2.72(
2.58(
2.44(
2.13(
2.12(
Comments:From Type Description.

Chemical Properties of Kuratite

Formula:
Ca
 
2
(Fe
2+
5
Ti)O
 
2
[Si
 
4
Al
 
2
O
 
18
]
Simplified for copy/paste:Ca2(Fe2+5Ti)O2[Si4Al2O18]
Essential elements:Al, Ca, Fe, O, Si, Ti
All elements listed in formula:Al, Ca, Fe, O, Si, Ti

Relationship of Kuratite to other Species

Member of:Aenigmatite Group > Sapphirine Supergroup
Other Members of Group:

- +
Aenigmatite
Na
 
2
Fe
2+
5
Ti(Si
 
6
O
 
18
)O
 
2
Krinovite
Na
 
2
Mg
 
4
Cr
3+
2
(Si
 
6
O
 
18
)O
 
2
Wilkinsonite
Na
 
2
Fe
2+
4
Fe
3+
2
(Si
 
6
O
 
18
)O
 
2

Other Names for Kuratite

Synonyms:
IMA2013-109
Other Languages:

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 Kuratite

Reference List:

- +
Kurat et al. (2004): Geochimica et Cosmochimica Acta 68, 1901–1921. [as unnamed phase]

Hwang, S.-L., Shen, P., Chu, H.-T., Yui, T.-F., Varela, M.-E. and Iizuka, Y. (2014) Kuratite, IMA 2013-109. CNMNC Newsletter No. 19, February 2014, page 168; Mineralogical Magazine, 78, 165-170.

http://www.hou.usra.edu/meetings/lpsc2014/pdf/1818.pdf
http://www.sci-news.com/geology/science-kuratite-new-mineral-meteorite-01814.html

Internet Links for Kuratite

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  • Raman and XRD data at RRUFF project
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  • Localities for Kuratite

    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.
    Argentina
     
    • Buenos Aires
    Kurat et al. (2004): Geochimica et Cosmochimica Acta 68, 1901–1921. [as unnamed phase]; Hwang, S.-L., Shen, P., Chu, H.-T., Yui, T.-F., Varela, M.-E. and Iizuka, Y. (2014) Kuratite, IMA 2013-109. CNMNC Newsletter No. 19, February 2014, page 168; Mineralogical Magazine, 78, 165-170; http://www.hou.usra.edu/meetings/lpsc2014/pdf/1818.pdf
    Morocco
     
    • Souss-Massa-Draâ Region
      • Ouarzazate Province
        • Aoult
    http://adsabs.harvard.edu/abs/2007AGUFM.P41A0219K (as rhönite); http://www.hou.usra.edu/meetings/lpsc2014/pdf/1818.pdf
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    Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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