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Shulamit Gross
White to colourless
Specific Gravity:
2.88 (Calculated)
Crystal System:
Named by D. Weber and A. Bischoff in 1994 in honour of Dr. Shulamit Gross (1923, Grodno, Poland (now Belarus) - 19 September 2012), emeritus member of the Geological Survey of Israel. She first discovered the natural mineral.
Grossite is the natural counterpart of the synthetic compound Ca-dialuminate (CaAl4O7)∙

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Classification of GrossiteHide

Approval Year:
First Published:

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
C : Metal: Oxygen = 2: 3,3: 5, and similar
C : With large and medium-sized cations

3 : (AB)10X14

Physical Properties of GrossiteHide

White to colourless
2.88 g/cm3 (Calculated)

Optical Data of GrossiteHide

Biaxial (+)
RI values:
nα = 1.618(3) nβ = 1.618(3) nγ = 1.652(3)
Measured: 12° (1), Calculated: 15.5°
Max Birefringence:
δ = 0.034
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Optical data from synthetic Ca-dialuminate.

Chemical Properties of GrossiteHide

Common Impurities:

Crystallography of GrossiteHide

Crystal System:
Class (H-M):
2/m - Prismatic
Space Group:
Cell Parameters:
a = 12.94(1) Å, b = 8.910(8) Å, c = 5.446(4) Å
β = 107.0(1)°
a:b:c = 1.452 : 1 : 0.611
Unit Cell V:
600.1 ų

X-Ray Powder DiffractionHide

Powder Diffraction Data:
4.460 (43)
3.609 (13)
3.515 (100)
2.882 (13)
2.605 (36)
2.440 (21)
1.764 (20)
Meteoritic grossite (Acfer 182 meteorite).

Type Occurrence of GrossiteHide

General Appearance of Type Material:
Lath-like or rounded grains.
Place of Conservation of Type Material:
Institute for Planetology, Munster.
Natural History Museum, Humboldt University, Berlin, Germany.
Geological Setting of Type Material:
In argillaceous limestones metamorphosed at high temperature and low pressure.
Associated Minerals at Type Locality:

Synonyms of GrossiteHide

Other Language Names for GrossiteHide


Common AssociatesHide

Melilite GroupCa2M(XSiO7)
Pyroxene GroupA large group of inosilicate (chain silicate) minerals with the general formula ABSi2O6.
Associated Minerals Based on Photo Data:
Forsterite1 photo of Grossite associated with Forsterite on
Perovskite1 photo of Grossite associated with Perovskite on

Related Minerals - Nickel-Strunz GroupingHide

4.CC.AllendeiteSc4Zr3O12Trig. 3 : R3
4.CC.20ChlormayeniteCa12Al14O32[◻4Cl2]Iso. 4 3m : I4 3d
4.CC.25YafsoaniteCa3Zn3(TeO6)2Iso. m3 (2/m 3)
4.CC.30LatrappiteCa2NbFe3+O6Orth. mmm (2/m 2/m 2/m) : Pnma
4.CC.30LueshiteNaNbO3Orth. mmm (2/m 2/m 2/m)
4.CC.30PerovskiteCaTiO3Orth. mmm (2/m 2/m 2/m) : Pnma
4.CC.30BarioperovskiteBaTiO3Orth. mm2 : Amm2
4.CC.30LakargiiteCa(Zr,Sn,Ti)O3Orth. mmm (2/m 2/m 2/m) : Pnma
4.CC.30MegawiteCaSnO3Orth. mmm (2/m 2/m 2/m) : Pban
4.CC.35MacedonitePbTiO3Tet. 4/mmm (4/m 2/m 2/m) : P4/nmm
4.CC.35TausoniteSrTiO3Iso. 4 3m
4.CC.35Isolueshite(Na,La)NbO3Iso. m3m (4/m 3 2/m) : Pm3m
4.CC.40CrichtoniteSr(Mn,Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH)38Trig. 3 : R3
4.CC.40Davidite-(Ce)(Ce,La)(Y,U,Fe)(Ti,Fe)20(O,OH)38Trig. 3 : R3
4.CC.40Davidite-(Y)(La,Ce,Na,Ca,Pb)(Y,Fe2+,◻)(Fe2+,Mn2+)2(Ti,Fe3+,Nb,Zr)18O38 (hypothetical)Trig.
4.CC.40LandauiteNaMnZn2(Ti,Fe)6Ti12O38Trig. 3 : R3
4.CC.40Mathiasite(K, Ba, Sr)(Zr, Fe)(Mg,Fe)2 (Ti,Cr,Fe)18O38Trig.
4.CC.40Dessauite-(Y)(Sr,Pb)(Y,U)(Ti,Fe3+)20O38Trig. 3 : R3
4.CC.40Cleusonite(Pb,Sr)(U4+,U6+)(Fe2+,Zn)2(Ti,Fe2+,Fe3+)18(O,OH)38Trig. 3 : R3
4.CC.40Gramaccioliite-(Y)(Pb,Sr)(Y,Mn)Fe3+2(Ti,Fe3+)18O38Trig. 3
4.CC.45HawthorneiteBaMgTi3Cr4Fe2+2Fe3+2O19Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
4.CC.45PlumboferritePb2(Fe3+,Mn2+,Mg)11O19Trig. 3 2
4.CC.45HaggertyiteBaFe2+4Fe3+2Ti5MgO19Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
4.CC.45NežilovitePbZn2Mn4+2Fe3+8O19Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
4.CC.45Hibonite-(Fe)(Fe,Mg)Al12O19Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
4.CC.45BarioferriteBaFe3+12O19Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
4.CC.60Mengxianminite (of Huang et al.)(Ca,Na)3(Fe,Mn)2Mg2(Sn,Zn)5Al8O29

Fluorescence of GrossiteHide


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 GrossiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Boyko, E.R., Wisnyi, L.G. (1958) The optical properties and structures of CaO·2Al2O3 and SrO·2Al2O3. Acta Crystallographica: 11: 444-445.
Goodwin, D.W., Lindop, A.J. (1970) The crystal structure of CaO.2Al2O3. Acta Crystallographica: B26: 1230-1235.
Ponomarev, V.I., Kheiker, D.M., Belov, N.V. (1971) Crystal structure of calcium dialuminate, CA2. Soviet Physics - Crystallography: 15: 995-998.
Weber, D., Bischoff, A. (1994) Grossite (CaAl4O7) - a rare phase in terrestrial rocks and meteorites. European Journal of Mineralogy: 6: 591-594.
Jambor, J.L., Kovalenker, V.A., Roberts, A.C. (1995) New mineral names. American Mineralogist: 80: 630-635.
Mandarino, J.A. (1997) New Minerals 1990-1994. Mineralogical Record, 222 pgs.
Stebbins, J.F., Oglesby, J.V., Kroeker, S. (2001) Oxygen tricluster in crystalline CaAl4O7 (grossite) and in calcium aluminosilicate glasses: 17O NMR. American Mineralogist: 86: 1307-1311.

Internet Links for GrossiteHide

Localities for GrossiteHide

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.
  • Tamanghasset Province
Weber, D. (1995). Refractory Inclusions From the Carbonaceous Chondrite Acfer 094 (Abstract). Meteoritics 30 (5), 595-596. (Sept 1995).; Anorthite, Augite, Corundum, Diopside, Forsterite, Grossite, Hibonite, Melilite, Olivine, Perovskite, Pigeonite, Plagioclase, Pyroxene, Spinel ; Krot, A. N., Fagan, T. J., Keil, K., McKeegan, K. D., Sahijpal, S., Hutcheon, I. D., Petaev, M. I. & Yurimoto, H. (2004). Ca,Al-rich inclusions, amoeboid olivine aggregates, and Al-rich chondrules from the unique carbonaceous chondrite Acfer 094: I. mineralogy and petrology. Geochimica et Cosmochimica Acta 68 (9), 2167-2184. (May 2004).
    • Tanezrouft
Weber D, Bischoff A (1994) Grossite (CaAl4O7) - a rare phase in terrestrial rocks and meteorites, European Journal of Mineralogy 6, 591-594 ; Weber, D., & Bischoff, A. (1992, March). Mineralogy and chemistry of refractory inclusions in CR-like chondrites from the Sahara desert. In Lunar and Planetary Institute Science Conference Abstracts (Vol. 23, p. 1505).
Weber D, Bischoff A (1994) Grossite (CaAl4O7) - a rare phase in terrestrial rocks and meteorites, European Journal of Mineralogy 6, 591-594
  • Eastern Antarctica
    • Queen Maud Land
      • Queen Fabiola Mts (Yamato Mts)
Kojima, T., Yada, S. & Tomeoka, K. (1995) Ca-Al-rich inclusions in three Antarctic CO3 chondrites, Yamato-81020 Yamato-82050 and Yamato-790992: Record of low temperature alteration. Proc. NIPR Symposium. Antarct. Meteorites 8: 79-96. (May 1995). ; Brearley, A. J. & Jones, R. H. (1998) Chondritic Meteorites: IN: Planetary Materials (Papike, J.J. [Ed.]), Chapter 3, 398 pages: Mineralogical Society of America: Washington, DC, USA.
    • Victoria Land
      • Allan Hills
American Mineralogist, Volume 94, pages 1479–1482, 2009
  • San Luis
    • Sierra de Comechingones
Gunnar Färber analyses; Additional analyses by Frank K. Mazdab, University of Arizona
  • South Australia
    • Mt Lofty Ranges
      • South Mt Lofty Ranges (Adelaide Hills)
        • Adelaide
Weber, D. & Bischoff, A. (1994). The occurrence of grossite (CaAl4O7) in chondrites. Geochimica et Cosmochimica Acta 58 (18), 3855-3877. (Sept 1994)
  • Victoria
    • City of Greater Shepparton
      • Murchison
Dietmar Weber & Adolf Bischoff (1994). The occurrence of grossite (CaAl4O7) in chondrites. Geochimica et Cosmochimica Acta 58, #18, 3855–3877. (September 1994).
  • Shaanxi Province
    • Hanzhong Prefecture
      • Ningqiang Co.
Wang, Y. & Hsu, W. (2009). Petrology and Mineralogy of the Ningqiang carbonaceous chondrite. Meteoritics & Planetary Science Vol. 44, #5, 763-780. (May 2009).
  • Ile-de-France
    • Paris
Hewins, Roger H. & 16 others (2014) The Paris meteorite, the least altered CM chondrite so far. Geochimica et Cosmochimica Acta 124: 190-222. (1 January 2014)
Israel (TL)
  • Negev
Gross, S. (1977): The Mineralogy of the Hatrurim Formation, Israel. Geological Survey of Israel, Bulletin no. 70, 80 pp.
  • Emilia-Romagna
    • Ferrara Province
      • Vigarano Mainarda
        • Vigarano Pieve
Dietmar Weber & Adolf Bischoff (1994). The occurrence of grossite (CaAl4O7) in chondrites. Geochimica et Cosmochimica Acta 58, #18, 3855-3877.
  • Pavlodar Province (Pavlodar Oblysy; Pavlodarskaya Oblast')
Weber, D. & Bischoff, A. (1994). The occurrence of grossite (CaAl4O7) in chondrites. Geochimica et Cosmochimica Acta 58 (18): 3855-3877. (Sept 1994)
  • Chihuahua
    • Pueblito de Allende
Brearley, A. J. & Jones, R. H. (1998). Chondritic Meteorites. In: Planetary Materials (Papike, J. J., Editor): Chapter 3, 398 pages. Mineralogical Society of America: Washington, DC, USA. (1998)
  • Drâa-Tafilalet Region
    • Er Rachidia Province (Errachidia Province)
      • Er Rachidia (Errachidia)
Ivanova, M. A. et al (2002): Meteorit.Planet. Sci. 37, 1337-1444.
Northwest Africa Meteorites
Stuart A. Sweeney Smith (2010) Characterization of two atypical refractory inclusions from separate CV3 chondritic meteorites: Petrogenesis in the early Solar System . Senior Comprehensive Exercise Carleton College, Northfield, Minnesota.
  • Urals Region
    • Southern Urals
      • Bashkortostan Republic (Bashkiria Republic)
Ivanova, M. A., Nazarov, M. A., Kononkova, N. N. & Brandstaetter, F. (2005) Isheyevo: A New CB Chondrite. Meteoritics & Planetary Science 40 (9, Supplement): A74, pdf. #5073. (Sept 2005); Krot, A. N., Ulyanov, A. A. & Ivanova, M. A. (2008) Refractory inclusions in the CH/CB-like carbonaceous chondrite Isheyevo: I. Mineralogy and petrography. Meteoritics & Planetary Science 43, #9, 1531-1550. (Sept 2008)
  • Kansas
    • Decatur Co.
Brearley, A. J. & Jones, R. H. (1998). Chondritic Meteorites. In: Planetary Materials (Papike, J. J., Editor): Chapter 3, 398 pages. Mineralogical Society of America: Washington, DC, USA. (1998)
  • Oklahoma
    • Washita Co.
Grossite, Hibonite, Melilite; Weber, D. & Bischoff, A. (1994) Geochimica et Cosmochimica Acta 58 (18): 3855-3877. (Sept 1994)
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