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Grossite

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Tamanghasset Province, Algeria
© 2008, J. Weissman

Formula:
CaAl
 
4
O
 
7
System:Monoclinic
This page provides mineralogical data about Grossite.

Classification of Grossite

IMA status:Approved
Strunz 8th edition ID:4/B.09-10
Nickel-Strunz 10th (pending) edition ID: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
Dana 8th edition ID:7.3.2.1

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

Type Locality:Hatrurim Formation, Israel
Year of Discovery:1994

Crystallography of Grossite

Crystal System:Monoclinic
Cell Parameters:a = 12.94Å, b = 8.91Å, c = 5.44Å
β = 107.01°
Ratio:a:b:c = 1.452 : 1 : 0.611
Unit Cell Volume:V 599.77 ų (Calculated from Unit Cell)

Optical Data of Grossite

Type:Biaxial (+)
RI values: nα = 1.618 nβ = 1.618 nγ = 1.652
2V:Measured: 15° , Calculated: 16°
Maximum Birefringence:δ = 0.034

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:noticable

Chemical Properties of Grossite

Formula:
CaAl
 
4
O
 
7
Essential elements:Al, Ca, O
All elements listed in formula:Al, Ca, O
Common Impurities:Fe

Relationship of Grossite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.CC.05Chrombismite
Bi
 
16
CrO
 
27
4.CC.10Freudenbergite
Na
 
2
(Ti,Fe)
 
8
O
 
16
4.CC.20Mayenite
Ca
 
12
Al
 
14
O
 
33
4.CC.25Yafsoanite
Ca
 
3
Zn
 
3
[TeO
 
6
]
 
2
4.CC.30Latrappite
(Ca,Na)(Nb,Ti,Fe)O
 
3
4.CC.30Lueshite
NaNbO
 
3
4.CC.30Natroniobite
NaNbO
 
3
4.CC.30Perovskite
CaTiO
 
3
4.CC.30Barioperovskite
BaTiO
 
3
4.CC.30IMA2007-014
Ca(Zr,Sn,Ti)O
 
3
4.CC.35Loparite-(Ce)
(Na,Ce,Ca,Sr,Th)(Ti,Nb,Fe)O
 
3
4.CC.35Macedonite
PbTiO
 
3
4.CC.35Tausonite
SrTiO
 
3
4.CC.35Isolueshite
(Na,La,Ca)(Nb,Ti)O
 
3
4.CC.40Crichtonite
(Sr,La,Ce,Y)(Ti,Fe
3+
 
,Mn)
 
21
O
 
38
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)
(Y,Ce,La,Ca,□)(U,Y)(Fe
3+
 
,Mg)
 
2
(Ti,Fe
3+
 
,Cr,�)
 
18
O
 
38
4.CC.40Landauite
NaMnZn
 
2
(Ti,Fe)
 
6
Ti
 
12
O
 
38
4.CC.40Lindsleyite
(Ba,Sr)(Ti,Zr,Fe,Cr)
 
21
O
 
38
4.CC.40Loveringite
(Ca,Ce)(Ti,Fe,Cr,Mg)
 
21
O
 
38
4.CC.40Mathiasite
K(Ti,Cr,Fe,Mg,Zr)
 
21
O
 
38
4.CC.40Senaite
Pb(Ti,Fe,Mn)
 
21
O
 
38
4.CC.40Dessauite-(Y)
(Sr,Pb)(Y,U)(Ti,Fe
3+
 
)
 
20
O
 
38
4.CC.40Cleusonite
(Pb,Sr)(U
4+
 
,U
6+
 
)(Fe
2+
 
,Zn)
 
2
(Ti,Fe
2+
 
,Fe
3+
 
)
 
18
(O,OH)
 
38
4.CC.40Gramaccioliite-(Y)
(Pb,Sr)(Y,Mn)(Ti,Fe
3+
 
)
 
18
Fe
3+
2
O
 
38
4.CC.45Diaoyudaoite
NaAl
 
11
O
 
17
4.CC.45Hawthorneite
BaMgTi
 
3
Cr
 
4
Fe
 
4
O
 
19
4.CC.45Hibonite
(Ca,Ce)(Al,Fe,Ti,Si,Mg)
 
12
O
 
19
4.CC.45Lindqvistite
Pb
 
2
(Mg,Fe)Fe
 
16
O
 
27
4.CC.45Magnetoplumbite
(Pb,Mn)(Fe,Mn)
 
12
O
 
19
4.CC.45Plumboferrite
PbFe
 
4
O
 
7
4.CC.45Yimengite
K(Cr,Ti,Fe,Mg)
 
12
O
 
19
4.CC.45Haggertyite
Ba[Fe
2+
6
Ti
 
5
Mg]O
 
19
4.CC.45Nežilovite
PbZn
 
2
(Mn
4+
 
,Ti
4+
 
)
 
2
Fe
3+
8
O
 
19
4.CC.45Batiferrite
Ba[Ti
 
2
Fe
3+
8
Fe
2+
2
]O
 
19
4.CC.50Jeppeite
(K,Ba)
 
2
(Ti,Fe)
 
6
O
 
13
4.CC.55Zenzénite
Pb
 
3
(Fe,Mn)
 
4
Mn
 
3
O
 
13
4.CC.60Mengxianminite
(Ca,Na)
 
3
(Fe,Mn)
 
2
Mg
 
2
(Sn,Zn)
 
5
Al
 
8
O
 
29

Other Names for Grossite

Synonyms:
IMA1993-052
Other Languages:
German:Grossit
Russian:Гроссит
Spanish:Grossita

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 Grossite

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

Acta Crystallographica: 11: 444-445.

European Journal of Mineralogy: 6: 591-564.

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.

Articles/Blogs about Grossite

Internet Links for Grossite

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    Localities for Grossite

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    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.
    Algeria
     
    • Tamanghasset Province
      • Tanezrouft
    		Cat. of Type Mineral Spec.;Commission on Museums (IMA)
    Israel
     
    Gross, S. (1977): The Mineralogy of the Hatrurim Formation, Israel. Geological Survey of Israel, Bulletin no. 70, 80 pp.
    Kazakhstan
     
    • Pavlodar Oblysy (Pavlodar [Pavlodarskaya] Oblast')
    		Lunar and Planetary Science XXXI
    Morocco
     
    • Meknès-Tafilalet Region
      • Er Rachidia Province
        • Er Rachidia
    		Ivanova, M. A. et al (2002): Meteorit.Planet. Sci. 37, 1337-1444.
    Mineral and/or Locality
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