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Shulamitite

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Formula:
Ca3TiFe3+AlO8
Colour:
Reddish brown
Lustre:
Adamantine, Sub-Metallic
Hardness:
6 - 7
Specific Gravity:
3.84 (Calculated)
Crystal System:
Orthorhombic
Name:
In honour of Dr. Shulamit Gross (1923-2012), emeritus member of the Geological Survey of Israel. The name of this reddish brown mineral is also related to biblical Shulamit, red-haired sweetheart of King Solomon.
Intermediate, entropy-stabilised phase between brownmillerite and perovskite. The Al analogue of sharyginite.

Known as a synthetic phase.

Compare also Unnamed (Ca-Ti-Fe-Al Oxide II).


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Classification of ShulamititeHide

Approved
Approval Year:
2011

Physical Properties of ShulamititeHide

Adamantine, Sub-Metallic
Colour:
Reddish brown
Streak:
Light brown
Hardness:
6 - 7 on Mohs scale
Hardness:
VHN100=683 - 977 kg/mm2 - Vickers
Cleavage:
Distinct/Good
Good on {010} and imperfect on {001} and {100}
Fracture:
Irregular/Uneven
Density:
3.84 g/cm3 (Calculated)
Comment:
Density in the range 3.84-3.865 was calculated

Optical Data of ShulamititeHide

Type:
Anisotropic
Anisotropism:
Weak
Bireflectance:
Weak
Reflectivity:
400nmR1=14.6%R2= 13.4%
420nmR1=13.6%R2= 12.5%
440nmR1=13.3%R2= 12.2%
460nmR1=12.9%R2= 11.9%
480nmR1=12.5%R2= 11.6%
500nmR1=12.6%R2= 11.6%
520nmR1=12.3%R2= 11.4%
540nmR1=12.2%R2= 11.4%
560nmR1=13.1%R2= 12.2%
580nmR1=12.5%R2= 11.7%
600nmR1=12.2%R2= 11.6%
620nmR1=12.2%R2= 11.5%
640nmR1=12.3%R2= 11.5%
660nmR1=12.3%R2= 11.4%
680nmR1=11.9%R2= 11.3%
700nmR1=11.7%R2= 11.2%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 14.6%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Grey to light grey
Internal Reflections:
Yellow-brown
Pleochroism:
Visible
Comments:
In thin section from reddish brown to yellow-brown, under reflected light from grey to light grey.

Chemical Properties of ShulamititeHide

Formula:
Ca3TiFe3+AlO8

Crystallography of ShulamititeHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pmma
Setting:
Pmma
Cell Parameters:
a = 5.4200(6) Å, b = 11.064(1) Å, c = 5.5383(7) Å
Ratio:
a:b:c = 0.49 : 1 : 0.501
Unit Cell V:
332.12 ų
Z:
2
Morphology:
Xenomorphic or subhedral grains and their intergrowths. Individual prismatic platelets and star-like aggregates. Prismatic crystals have following forms: {100}, {010}, and {001}, rhombic prisms are minor.
Twinning:
The simple (in 90°) and complex (in 90°, 45° and 60°) twinning is common.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
2.71 (50)
2.68 (100)
1.940 (80)
1.842 (50)
1.582 (50)
1.559 (50)
1.337 (50)
1.170 (60)

Type Occurrence of ShulamititeHide

General Appearance of Type Material:
Reddish brown subhedral grains or prismatic platelets up to 0.2 mm and intergrowths up to 0.5 mm.
Place of Conservation of Type Material:
Mineralogical Museum of St. Petersburg State University, St. Petersburg (number 1/19465) and the Central Siberian Geological Museum of V. S. Sobolev Institute of Geology and Mineralogy, Novosibirsk (number VII-87/1), both in Russia.
Geological Setting of Type Material:
Major to accessory mineral in high-temperature metacarbonate larnite rocks.
Associated Minerals at Type Locality:

Synonyms of ShulamititeHide

Other Language Names for ShulamititeHide

German:Shulamitit

Relationship of Shulamitite to other SpeciesHide

Other Members of this group:
BrownmilleriteCa2(Al,Fe3+)2O5Orth. mm2
SrebrodolskiteCa2Fe3+2O5Orth. mmm (2/m 2/m 2/m) : Pnma

Common AssociatesHide

Associated Minerals Based on Photo Data:
Oldhamite5 photos of Shulamitite associated with Oldhamite on mindat.org.
Larnite5 photos of Shulamitite associated with Larnite on mindat.org.
Fluorkyuygenite5 photos of Shulamitite associated with Fluorkyuygenite on mindat.org.

Other InformationHide

Notes:
Shulamitite is weakly resistant to weathering or retrograde alteration, sometimes transforming into a hydrated phase CaTiFe3+AlO8.2-3H2O.
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 ShulamititeHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
GRENIER, J.-C., J. DARRIET, M. POUCHARD & P. HAGENMULLER (1976): Mise en evidence d’une nouvelle famille de phases de type perovskite lacunaire ordonnée de formule A3M3O8 (AMO2.67). Materials Research Bulletin 11, 1219-1226.
RODRÍGUEZ-CARVAJAL, J., M. VALETT-REGÍ & J. M. GONZÁLEZ-CALBET (1989): Perovskite threefold superlattices: a structure determination of the A3M3O8 phase. Materials Research Bulletin 24, 423-430.
Prasanna, T. R. S.; Navrotsky, A.. (1994): Energetics in the brownmillerite-perovskite pseudobinary Ca2Fe2O5-CaTiO3. Journal of Materials Research 9, 3121-3124.
Sharygin, V.V., Sokol, E.V. & Vapnik, Ye. (2008): Minerals of the pseudobinary perovskite-brownmillerite series from combustion metamorphic larnite rocks of the Hatrurim Formation (Israel). Russian Geology and Geophysics 49, 709-726.
Kolitsch, U. & Brandstätter, F. (2011): 1709) Srebrodolskit und die Phase Ca3Ti(Fe,Al)2O8 in einem Ca-reichen Xenolith aus dem Basaltbruch Klöch, Bad Radkersburg, Steiermark. Pp. 174-175 in Niedermayr, G. et al. (2011): Neue Mineralfunde aus Österreich LX. Carinthia II, 201./121., 135-186.
Sharygin, V.V., Lazic, B., Armbruster, T., Murashko, M.N., Wirth, R., Galuskina, I.O., Galuskin, E.V. and Vapnik, Y. (2011): Shulamitite, IMA 2011-016. CNMNC Newsletter No. 10, October 2011, 2552.
Sharygin, V.V., Lazic, B., Armbruster, T.M., Murashko, M.N., Wirth, R., Galuskina, I.O., Galuskin, E.V., Vapnik, Y., Britvin, S.N. & Logvinova, A.M. (2013): Shulamitite, Ca3TiFe3+AlO8 - a new perovskite-related mineral from Hatrurim Basin, Israel. European Journal of Mineralogy, 25, 97-111.

Internet Links for ShulamititeHide

Localities for ShulamititeHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - 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.
Austria
 
  • Styria
    • Bad Radkersburg
      • Klöch
Kolitsch, U. & Brandstätter, F. (2011): 1709) Srebrodolskit und die Phase Ca3Ti(Fe,Al)2O8 in einem Ca-reichen Xenolith aus dem Basaltbruch Klöch, Bad Radkersburg, Steiermark. Pp. 174-175 in Niedermayr, G. et al. (2011): Neue Mineralfunde aus Österreich LX. Carinthia II, 201./121., 135-186.; Postl, W., Bernhard, F., Bojar, H.-P., Kolitsch, U. & Brandstätter, F. (2012): 1775) Magnesiochromit, Phillipsit-Ca, Chabasit-Ca und Vertumnit sowie eine Ergänzung zur Phase Ca3Ti(Fe,Al)2O8 (= Shulamitit) in einem Ca-reichen Xenolith aus dem Basaltsteinbruch in Klöch, Steiermark. Pp. 172-174 in Niedermayr, G. et al. (2012): Neue Mineralfunde aus Österreich LXI. Carinthia II, 202./122., 123-180.
Germany
 
  • Rhineland-Palatinate
    • Eifel
      • Mayen
        • Ettringen
          • Bellerberg volcano
EMPA data, Sharygin V.V.
Sharygin, V. V. (2012). Mineralogy of metacarbonate xenolith from alkali basalt, E. Eifel, Germany. In Ore Potential of Alkaline, Kimberlite and Carbonatite Magmatism. Book of Abstracts, XXIX International Conference. Training Program: Alkaline Magmatism of the Earth, Sudak-Moscow, ONTI GEOCHI RAS (pp. 156-158).
Israel (TL)
 
  • Negev
    • Hatrurim Formation
Sharygin, V.V., Sokol, E.V. & Vapnik, Ye. (2008): Minerals of the pseudobinary perovskite-brownmillerite series from combustion metamorphic larnite rocks of the Hatrurim Formation (Israel). Russian Geology and Geophysics 49, 709-726; Sharygin, V.V., Lazic, B., Armbruster, T., Murashko, M.N., Wirth, R., Galuskina, I.O., Galuskin, E.V. and Vapnik, Y. (2011): Shulamitite, IMA 2011-016. CNMNC Newsletter No. 10, October 2011, 2552.
Galuskin, E.V., Galuskina, I.O., Gfeller, F., Krüger, B., Kusz, J., Vapnik, Y., Dulski, M., Dzierżanowski, P. (2016): Silicocarnotite, Ca5[(SiO4)(PO4)](PO4), a new ‘old’ mineral from the Negev Desert, Israel, and the ternesite-silicocarnotite solid solution: indicators of high-temperature alteration of pyrometamorphic rocks of the Hatrurim Complex, Southern Levant. European Journal of Mineralogy: 28: 105-12.
Palestine
 
  • West Bank
    • Hatrurim Formation
Galuskin, E.V., Gfeller, F., Armbruster, T., Sharygin, V.V., Galuskina, I.O., Krivovichev, S.V., Vapnik, Y., Murashko, M., Dzierżanowski, P., Wirth, R. (2015): Mayenite supergroup, part III: Fluormayenite, Ca12Al14O32[□4F2], and fluorkyuygenite, Ca12Al14O32[(H2O)4F2], two new minerals from pyrometamorphic rocks of the Hatrurim Complex, South Levant. European Journal of Mineralogy, 27, 123-136.
Mineral and/or Locality  
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