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Krotite

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About KrotiteHide

Formula:
CaAl2O4
Crystal System:
Monoclinic
Name:
Named for Alexander N. Krot (b. 1959), a cosmochemist at the University of Hawaii, in recognition of his significant contributions to the understanding of early solar system processes.
Dimorph of:
Low-pressure CaAl2O4 dimorph.

Compare brownmillerite, grossite, hibonite, and addibischoffite.



Classification of KrotiteHide

Approved
Approval Year:
2010

Chemical Properties of KrotiteHide

Formula:
CaAl2O4

Crystallography of KrotiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 8.6996(3) Å, b = 8.0994(3) Å, c = 15.2170(11) Å
β = 90.188(6)°
Ratio:
a:b:c = 1.074 : 1 : 1.879
Unit Cell V:
1,072.21 ų (Calculated from Unit Cell)
Comment:
Space group P21/n.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.694 (28)
2.977 (100)
2.527 (35)
2.410 (40)
1.927 (22)
1.583 (23)
1.528 (31)
1.459 (33)

Type Occurrence of KrotiteHide

Synonyms of KrotiteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Hexamolybdenum1 photo of Krotite associated with Hexamolybdenum on mindat.org.
Hercynite1 photo of Krotite associated with Hercynite on mindat.org.

Other InformationHide

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

References for KrotiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Ma, C., Kampf, A.R., Connolly, Jr, H.C., Beckett, J.R., Rossman, G.R., Sweeney Smith, S.A. and Schrader, D.L. (2010) Krotite, IMA 2010-038. CNMNC Newsletter, October 2010, page 901; Mineralogical Magazine, 74, 899-902.

Internet Links for KrotiteHide

Localities for KrotiteHide

ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Northwest Africa Meteorites (TL)
 
Ma, C., Kampf, A.R., Connolly, Jr, H.C., Beckett, J.R., Rossman, G.R., Sweeney Smith, S.A. and Schrader, D.L. (2010) Krotite, IMA 2010-038. CNMNC Newsletter, October 2010, page 901; Mineralogical Magazine, 74, 899-902.
Mineral and/or Locality  
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