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Dmitryivanovite

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Formula:
CaAl
 
2
O
 
4
System:MonoclinicColour:Colourless
Name:Named for Dmitriy A. Ivanov (1962-1986), a geologist, mineralogist, and petrologist who died tragically on a field expedition to study igneous rocks in the Caucasus Mountains.
Dimorph of:Krotite
This page provides mineralogical data about Dmitryivanovite.

Classification of Dmitryivanovite

IMA status:Approved 2006
Nickel-Strunz 10th (pending) edition ID:4.BC.10

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
B : Metal: Oxygen = 3:4 and similar
C : With medium-sized and large cations
Dana 8th edition ID:7.2.16.

7 : MULTIPLE OXIDES
2 : AB2X4
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Type Occurrence of Dmitryivanovite

Type Locality:NWA 470 Carbonaceous chondrite meteorite, Er Rachidia, Er Rachidia Province, Meknès-Tafilalet Region, Morocco
General Appearance of Type Material:Subhedral grains to about 10 µm

Physical Properties of Dmitryivanovite

Colour:Colourless

Crystallography of Dmitryivanovite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:P21/b {P1 1 21/b} {P21/c} {P1 21/c 1} {P21/a}
Cell Parameters:a = 7.95Å, b = 8.62Å, c = 10.25Å
β = 93.1°
Ratio:a:b:c = 0.922 : 1 : 1.189
Unit Cell Volume:V 701.39 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction:
d-spacingIntensity
3.018 (100)
2.920 (83)
2.882 (52)
2.559 (42)
2.505 (46)
2.371 (31)
1.888 (29)
1.467 (29)

Chemical Properties of Dmitryivanovite

Formula:
CaAl
 
2
O
 
4
Essential elements:Al, Ca, O
All elements listed in formula:Al, Ca, O

Relationship of Dmitryivanovite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.BC.05Marokite
CaMn
 
2
O
 
4

Other Names for Dmitryivanovite

Synonyms:
IMA2006-035
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 Dmitryivanovite

Reference List:

- +
Ivanova, M.A., et al. (2002): "The first known occurrence of calcium monoaluminate, in a calcium aluminum-rich inclusion from the CH chondrite Northwest Africa 470": Meteoritics & Planetary Science 37, 1337-1444

Nature (1957) 180, 292-293

J.Inorg.Nucl.Chem. (1976) 38, 983-984

Eur.J.Mineral. (1990) 2, 273-282

Amer.Mineral. (2001) 86, 1307-1311

Lunar & Planet.Sci. (2006) 37, 1855

Mikouchi, T., Zolensky, M.E., Ivanova, M., Tachikawa, O., Komatsu, M., Le, L., Gounelles, M. (2009): Dmitryivanovite: A new high-pressure calcium aluminum oxide from the Northwest Africa 470 CH3 chondrite characterized using electron back-scatter diffraction analysis. American Mineralogist, 94, 746-750.

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    • Localities for Dmitryivanovite

    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.
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    (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.
    Morocco
     
    • Meknès-Tafilalet Region
      • Er Rachidia Province
        • Er Rachidia
    		Am. Min. 94,746-750(2009)
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