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Grossite

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Formula:
CaAl4O7
System:
Monoclinic
Colour:
White to colourless
Name:
In honour of Dr. Shulamit Gross (1923-2012), emeritus member of the Geological Survey of Israel.
Grossite is the natural counterpart of the synthetic compound Ca-dialuminate (CaAl4O7)∙

Classification of Grossite

Approved
4.CC.15

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
7.3.2.1

7 : MULTIPLE OXIDES
3 : (AB)10X14
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First Recorded Occurrence of Grossite

General Appearance of First Recorded Material:
Lath-like or rounded grains.
Year of Discovery:
1994
Geological Setting of First Recorded Material:
In argillaceous limestones metamorphosed at high temperature and low pressure.
Associated Minerals at First Recorded Locality:

Occurrences of Grossite

Geological Setting:
In Ca–Al-rich inclusions of meteorites thought formed by condensation from a hot gas or molten droplets.

Physical Properties of Grossite

Vitreous
Diaphaneity (Transparency):
Transparent
Colour:
White to colourless
Streak:
White
Density:
2.88 g/cm3 (Calculated)

Crystallography of Grossite

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Space Group Setting:
C2/c
Cell Parameters:
a = 12.94(1) Å, b = 8.910(8) Å, c = 5.446(4) Å
β = 107.0(1)°
Ratio:
a:b:c = 1.452 : 1 : 0.611
Unit Cell Volume:
V 600.1 ų
Z:
4
X-Ray Powder Diffraction Data:
d-spacingIntensity
4.460 (43)
3.609 (13)
3.515 (100)
2.882 (13)
2.605 (36)
2.440 (21)
1.764 (20)
Comments:
Meteoritic grossite (Acfer 182 meteorite).

Optical Data of Grossite

Type:
Biaxial (+)
RI values:
nα = 1.618(3) nβ = 1.618(3) nγ = 1.652(3)
2V:
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:
Moderate
Dispersion:
noticable
Comments:
Optical data from synthetic Ca-dialuminate.

Chemical Properties of Grossite

Formula:
CaAl4O7
Essential elements:
All elements listed in formula:
Analytical Data:
Mean of electron-microprobe analyses of 20 grossite grains from the Acfer 182 meteorite.
Al2O3 (77.8)
CaO (21.4)
FeO (0.31)
TiO2 (0.15)
SiO2 (0.11)
MgO (0.06)
Total (99.83)
Empirical Formula:
(Ca1.00Fe0.01)Al3.99O7.00
Common Impurities:
Fe

Relationship of Grossite to other Species

4.CC.05ChrombismiteBi16CrO27
4.CC.10FreudenbergiteNa2(Ti,Fe)8O16
4.CC.20ChlormayeniteCa12Al14O32Cl2
4.CC.25YafsoaniteCa3Zn3(TeO6)2
4.CC.30Latrappite(Ca,Na)(Nb,Ti,Fe)O3
4.CC.30LueshiteNaNbO3
4.CC.30NatroniobiteNaNbO3
4.CC.30PerovskiteCaTiO3
4.CC.30BarioperovskiteBaTiO3
4.CC.30LakargiiteCa(Zr,Sn,Ti)O3
4.CC.30MegawiteCaSnO3
4.CC.35Loparite-(Ce)(Na,Ce,Ca,Sr,Th)(Ti,Nb,Fe)O3
4.CC.35MacedonitePbTiO3
4.CC.35TausoniteSrTiO3
4.CC.35Isolueshite(Na,La,Ca)(Nb,Ti)O3
4.CC.40Crichtonite(Sr,La,Ce,Y)(Ti,Fe3+,Mn)21O38
4.CC.40Davidite-(Ce)(Ce,La)(Y,U,Fe)(Ti,Fe)20(O,OH)38
4.CC.40Davidite-(La)(La,Ce)(Y,U,Fe)(Ti,Fe)20(O,OH)38
4.CC.40Davidite-(Y)(La,Ce,Na,Ca,Pb)(Y,Fe2+,◻)(Fe2+,Mn2+)2(Ti,Fe3+,Nb,Zr)18O38 (hypothetical)
4.CC.40LandauiteNaMnZn2(Ti,Fe)6Ti12O38
4.CC.40Lindsleyite(Ba,Sr)(Zr,Ca)(Fe,Mg)2(Ti,Cr,Fe)18O38
4.CC.40Loveringite(Ca,Ce,La)(Zr,Fe)(Mg,Fe)2(Ti,Fe,Cr,Al)18O38
4.CC.40Mathiasite(K, Ba, Sr)(Zr, Fe)(Mg,Fe)2 (Ti,Cr,Fe)18O38
4.CC.40SenaitePb(Ti,Fe,Mn)21O38
4.CC.40Dessauite-(Y)(Sr,Pb)(Y,U)(Ti,Fe3+)20O38
4.CC.40Cleusonite(Pb,Sr)(U4+,U6+)(Fe2+,Zn)2(Ti,Fe2+,Fe3+)18(O,OH)38
4.CC.40Gramaccioliite-(Y)(Pb,Sr)(Y,Mn)Fe23+(Ti,Fe3+)18O38
4.CC.45DiaoyudaoiteNaAl11O17
4.CC.45HawthorneiteBa(MgTi3Cr4Fe4)O19
4.CC.45Hibonite(Ca,Ce)Al12O19
4.CC.45LindqvistitePb2Mn2+Fe16O27
4.CC.45Magnetoplumbite(Pb,Mn)(Fe,Mn)12O19
4.CC.45PlumboferritePb2Fe3+11-xMnx2+O19-2x, x = 1/3
4.CC.45YimengiteK(Cr,Ti,Fe,Mg)12O19
4.CC.45HaggertyiteBa[Fe62+Ti5Mg]O19
4.CC.45NežilovitePbZn2(Mn4+,Ti4+)2Fe83+O19
4.CC.45BatiferriteBa[Ti2Fe83+Fe22+]O19
4.CC.45Hibonite-(Fe)(Fe,Mg)Al12O19
4.CC.45BarioferriteBaFe123+O19
4.CC.50Jeppeite(K,Ba)2(Ti,Fe)6O13
4.CC.55ZenzénitePb3(Fe,Mn)4Mn3O13
4.CC.60Mengxianminite(Ca,Na)3(Fe,Mn)2Mg2(Sn,Zn)5Al8O29

Other Names for Grossite

Name in Other Languages:
German:Grossit
Spanish:Grossita

Other Information

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 Grossite

Reference List:
New Minerals (1997), New Minerals 1990-1994.

Acta Crystallographica: 11: 444-445.

Weber, D. & Bischoff, A. (1994): Grossite (CaAl4O7) - a rare phase in terrestrial rocks and meteorites. European Journal of Mineralogy, 6: 591-594.

Stebbins, J.F., Oglesby, J.V., and Kroeker, S. (2001) Oxygen tricluster in crystalline CaAl4O7 (grossite) and in calcium aluminosilicate glasses: 17O NMR. American Mineralogist: 86: 1307-1311.

Internet Links for Grossite

Localities for Grossite

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 for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
Algeria
 
  • 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
Antarctica
 
  • Eastern Antarctica
    • Victoria Land
      • Allan Hills
American Mineralogist, Volume 94, pages 1479–1482, 2009
Argentina
 
  • San Luis
    • Sierra de Comechingones
Gunnar Farber analyses
Australia
 
  • 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).
China
 
  • 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).
France
 
  • 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
 
  • Negev
Gross, S. (1977): The Mineralogy of the Hatrurim Formation, Israel. Geological Survey of Israel, Bulletin no. 70, 80 pp.
Italy
 
  • Emilia-Romagna
    • Ferrara Province
Dietmar Weber & Adolf Bischoff (1994). The occurrence of grossite (CaAl4O7) in chondrites. Geochimica et Cosmochimica Acta 58, #18, 3855-3877.
Kazakhstan
 
  • 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)
Mexico
 
  • 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)
Morocco
 
  • Meknès-Tafilalet Region
    • Er Rachidia Province (Errachidia Province)
      • Er Rachidia (Errachidia)
Ivanova, M. A. et al (2002): Meteorit.Planet. Sci. 37, 1337-1444.
      • Erfoud (Erfud)
        • Rissani
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.
Russia
 
  • 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)
USA
 
  • 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)
Mineral and/or Locality  
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