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Gottardiite

Formula:
Na
 
3
Mg
 
3
Ca
 
5
Al
 
19
Si
 
117
O
 
272
·93H
 
2
O
System:OrthorhombicLustre:Vitreous
This page provides mineralogical data about Gottardiite.

Classification of Gottardiite

IMA status:Approved 1994
Explanation of status:IMA1994-054
Strunz 8th edition ID:8/J.22-08
Nickel-Strunz 10th (pending) edition ID:9.GF.10

9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
F : Other Rare Zeolites
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Type Occurrence of Gottardiite

Type Locality:Mount Adamson, Victoria Land, Eastern Antarctica, Antarctica

Physical Properties of Gottardiite

Lustre:Vitreous

Crystallography of Gottardiite

Crystal System:Orthorhombic

Optical Data of Gottardiite

Type:Biaxial (-)
RI values: nα = 1.480 nβ = 1.485 nγ = 1.486
Maximum Birefringence:δ = 0.006

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:none

Chemical Properties of Gottardiite

Formula:
Na
 
3
Mg
 
3
Ca
 
5
Al
 
19
Si
 
117
O
 
272
·93H
 
2
O
Essential elements:Al, Ca, H, Mg, Na, O, Si
All elements listed in formula:Al, Ca, H, Mg, Na, O, Si

Relationship of Gottardiite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.GF.05Terranovaite
(Na,Ca)
 
8
(Si
 
68
Al
 
12
)O
 
160
·29H
 
2
O
9.GF.15Lovdarite
(Na,K,Ca)
 
4
(Be,Al)
 
2
Si
 
6
O
 
16
·4H
 
2
O
9.GF.20Gaultite
Na
 
4
Zn
 
2
Si
 
7
O
 
18
·5H
 
2
O
9.GF.25Chiavennite
CaMnBe
 
2
Si
 
5
O
 
13
(OH)
 
2
·2H
 
2
O
9.GF.30Tschernichite
(Ca,Na
 
2
)[Al
 
2
Si
 
4
O
 
12
] · 4-8H
 
2
O
9.GF.35Mutinaite
Na
 
3
Ca
 
4
Si
 
85
Al
 
11
O
 
192
·60H
 
2
O
9.GF.40Tschörtnerite
Ca
 
4
(Ca,Sr,K,Ba)
 
3
Cu
 
3
[(OH)
 
2
|Al
 
3
Si
 
3
O
 
12
]
 
4
 · nH
 
2
O
9.GF.50Thornasite
(Na,K)Th,Si
 
11
(O,OH,F,Cl)
 
25
·8H
 
2
O
9.GF.55Direnzoite
NaK
 
6
MgCa
 
2
(Al
 
13
Si
 
47
O
 
120
)·36H
 
2
O

Other Names for Gottardiite

Synonyms:
IMA1994-054
Other Languages:
German:Gottardiit
Russian:Готтардиит
Spanish:Gottardiita

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 Gottardiite

Reference List:Shannon, M.D., Casci, J.L., Cox, P.A., Andrews, S.J. (1991): Structure of the two-dimensional medium-pore high-silica zeolite NU-87. Nature, 353, 417-420.

Vezzalini, G., Quartieri, S., Rossi, A., Alberti, A. (1994): Occurrence of zeolites from Northern Victoria Land, Antarctica. Terra Antarctica: 1, 96-99.

Alberti, A., Vezzalini, G., Galli, E., Quartieri, S. (1996): The crystal structure of gottardiite, a new natural zeolite. European Journal of Mineralogy, 8, 69-75.

Galli, E., Quartieri, S., Vezzalini, G., Alberti, A. (1996): Gottardiite, a new high-silica zeolite from Antarctica: The natural counterpart of synthetic NU-87. European Journal of Mineralogy, 8, 687-693.

Mineralogical Record: 28: 142.

Mineralogical Record: 30: 5-6.

Internet Links for Gottardiite

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    Localities for Gottardiite

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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.
    (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.
    Antarctica
     
    • Eastern Antarctica
      • Victoria Land
    		Vezzalini, G., Quartieri, S., Rossi, A., Alberti, A. (1994): Occurrence of zeolites from Northern Victoria Land, Antarctica. Terra Antarctica, 1, 96-99. Alberti, A., Vezzalini, G., Galli, E., Quartieri, S. (1996): The crystal structure of gottardiite, a new natural zeolite. European Journal of Mineralogy, 8, 69-75. Galli, E., Quartieri, S., Vezzalini, G., Alberti, A. (1996): Gottardiite, a new high-silica zeolite from Antarctica: The natural counterpart of synthetic NU-87. European Journal of Mineralogy, 8, 687-693
    Mineral and/or Locality
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