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Erionite-Ca

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Big Photo

Nero Mt., San Pietro, Montecchio Maggiore, Vicenza Province, Veneto, Italy

Show Erionite-Ca Photos (15)



Formula:
(Ca,K
 
2
,Na
 
2
)
 
2
[Al
 
4
Si
 
14
O
 
36
] · 15H
 
2
O
System:HexagonalColour:White
Lustre:VitreousHardness:3½ - 4
Member of:Zeolite Group
Name:From the Greek for wool, in allusion to its white, fibrous, wool-like appearance. The Ca-dominant member of the erionite series.


A zeolite difficult to distinguish from offrétite.

Classification of Erionite-Ca

IMA status:Approved
Strunz 8th edition ID:8/J.26-94
Nickel-Strunz 10th (pending) edition ID:9.GD.20

9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
D : Chains of 6-membered rings – tabular zeolites
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Type Occurrence of Erionite-Ca

Type Locality:Maze (Mazé), Niigata Prefecture, Chubu Region, Honshu Island, Japan

Physical Properties of Erionite-Ca

Lustre:Vitreous
Colour:White
Streak:White
Hardness (Mohs):3½ - 4

Crystallography of Erionite-Ca

Crystal System:Hexagonal
Class (H-M):6/mmm (6/m 2/m 2/m) - Dihexagonal Dipyramidal
Space Group:P63/mmc {P63/m 2/m 2/c}
Cell Parameters:a = 13.15Å, c = 15.05Å
Ratio:a:c = 1 : 1.144
Unit Cell Volume:V 2,253.82 ų (Calculated from Unit Cell)

Optical Data of Erionite-Ca

Type:Uniaxial (+)
RI values: nω = 1.471 nε = 1.474
Maximum Birefringence:δ = 0.003

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

Chemical Properties of Erionite-Ca

Formula:
(Ca,K
 
2
,Na
 
2
)
 
2
[Al
 
4
Si
 
14
O
 
36
] · 15H
 
2
O
Essential elements:Al, Ca, H, O, Si
All elements listed in formula:Al, Ca, H, K, Na, O, Si

Relationship of Erionite-Ca to other Species

Member of:Zeolite Group
Other Members of Group:

- +
Amicite
K
 
2
Na
 
2
Al
 
4
Si
 
4
O
 
16
 · 5H
 
2
O
Ammonioleucite
(NH
 
4
,K)(AlSi
 
2
O
 
6
)
Analcime
Na
 
2
(Al
 
2
Si
 
4
O
 
12
) · 2H
 
2
O
Barrerite
(Na,K,Ca
 
0.5
)
 
2
[Al
 
2
Si
 
7
O
 
18
] · 7H
 
2
O
Bellbergite
(K,Ba,Sr)
 
2
Sr
 
2
Ca
 
2
(Ca,Na)
 
4
[Al
 
3
Si
 
3
O
 
12
]
 
6
 · 30H
 
2
O
Bikitaite
LiAlSi
 
2
O
 
6
 · H
 
2
O
Boggsite
Ca
 
8
Na
 
3
(Si,Al)
 
96
O
 
192
 · 70H
 
2
O
Brewsterite
Brewsterite-Ba
(Ba,Sr)[Al
 
2
Si
 
6
O
 
16
] · 5H
 
2
O
Brewsterite-Sr
(Sr,Ba,Ca)[Al
 
2
Si
 
6
O
 
16
] · 5H
 
2
O
Chabazite
Chabazite-Ca
(Ca,K
 
2
,Na
 
2
)
 
2
[Al
 
2
Si
 
4
O
 
12
]
 
2
 · 12H
 
2
O
Chabazite-K
(K
 
2
,Ca,Na
 
2
,Sr,Mg)
 
2
[Al
 
2
Si
 
4
O
 
12
]
 
2
 · 12H
 
2
O
Chabazite-Levyne Subgroup
Chabazite-Mg
(Mg
 
0.7
K
 
0.5
Ca
 
0.5
Na
 
0.1
)[Al
 
3
Si
 
9
O
 
24
]·10H
 
2
O
Chabazite-Na
(Na
 
2
,K
 
2
,Ca,Sr,Mg)
 
2
[Al
 
2
Si
 
4
O
 
12
]
 
2
 · 12H
 
2
O
Chabazite-Sr
Sr
 
2
[Al
 
2
Si
 
4
O
 
12
]
 
2
 · 12H
 
2
O
Chiavennite
CaMnBe
 
2
Si
 
5
O
 
13
(OH)
 
2
 · 2H
 
2
O
Clinoptilolite-Ca
(Ca,Na,K)
 
2-3
Al
 
3
(Al,Si)
 
2
Si
 
13
O
 
36
 · 12H
 
2
O
Clinoptilolite-K
(K,Na,Ca)
 
2-3
Al
 
3
(Al,Si)
 
2
Si
 
13
O
 
36
 · 12H
 
2
O
Clinoptilolite-Na
(Na,K,Ca)
 
2-3
Al
 
3
(Al,Si)
 
2
Si
 
13
O
 
36
 · 12H
 
2
O
Cowlesite
CaAl
 
2
Si
 
3
O
 
10
 · 6H
 
2
O
Dachiardite-Ca
(Ca,Na
 
2
,K
 
2
)
 
5
Al
 
10
Si
 
38
O
 
96
 · 25H
 
2
O
Dachiardite-Na
(Na
 
2
,Ca,K
 
2
)
 
5
Al
 
10
Si
 
38
O
 
96
 · 25H
 
2
O
Direnzoite
NaK
 
6
MgCa
 
2
(Al
 
13
Si
 
47
O
 
120
) · 36H
 
2
O
Edingtonite
Ba[Al
 
2
Si
 
3
O
 
10
] · 4H
 
2
O
Epistilbite
CaAl
 
2
Si
 
6
O
 
16
 · 5H
 
2
O
Erionite
Erionite-K
(K
 
2
,Ca,Na
 
2
)
 
2
[Al
 
4
Si
 
14
O
 
36
] · 15H
 
2
O
Erionite-Na
(Na
 
2
,K
 
2
,Ca)
 
2
[Al
 
4
Si
 
14
O
 
36
] · 15H
 
2
O
Faujasite Subgroup
Faujasite-Ca
(Ca,Na
 
2
,Mg)
 
3.5
[Al
 
7
Si
 
17
O
 
48
] · 32H
 
2
O
Faujasite-Mg
(Mg,Na
 
2
,Ca)
 
3.5
[Al
 
7
Si
 
17
O
 
48
] · 32H
 
2
O
Faujasite-Na
(Na
 
2
,Ca,Mg)
 
3.5
[Al
 
7
Si
 
17
O
 
48
] · 32H
 
2
O
Ferrierite
Ferrierite-K
(K
 
2
,Na
 
2
,Mg,Ca)
 
3-5
Mg[Al
 
5-7
Si
 
27.5-31
O
 
72
] · 18H
 
2
O
Ferrierite-Mg
(Mg,Na
 
2
,K
 
2
,Ca)
 
3-5
Mg[Al
 
5-7
Si
 
27.5-31
O
 
72
] · 18H
 
2
O
Ferrierite-Na
(Na
 
2
,K
 
2
,Mg,Ca)
 
3-5
Mg[Al
 
5-7
Si
 
27.5-31
O
 
72
] · 18H
 
2
O
Flörkeite
(K
 
3
Ca
 
2
Na)[Al
 
8
Si
 
8
O
 
32
] · 12H
 
2
O
Garronite
Na
 
2
Ca
 
5
Al
 
12
Si
 
20
O
 
64
 · 27H
 
2
O
Gaultite
Na
 
4
Zn
 
2
Si
 
7
O
 
18
 · 5H
 
2
O
Gismondine
Gismondine-Ba
Ba
 
2
Al
 
4
Si
 
4
O
 
16
 · 4-6H
 
2
O
Gismondine-Ca
CaAl
 
2
Si
 
2
O
 
8
 · 4H
 
2
O
Gmelinite
Gmelinite-Ca
(Ca,Na
 
2
)[Al
 
2
Si
 
4
O
 
12
] · 6H
 
2
O
Gmelinite-K
(K
 
2
,Na
 
2
,Ca)[Al
 
2
Si
 
4
O
 
12
] · 6H
 
2
O
Gmelinite-Na
(Na
 
2
,Ca)[Al
 
2
Si
 
4
O
 
12
] · 6H
 
2
O
Gobbinsite
Na
 
4
(Ca,Mg,K
 
2
)Al
 
6
Si
 
10
O
 
32
 · 12H
 
2
O
Gonnardite
(Na,Ca)
 
2
(Si,Al)
 
5
O
 
10
 · 3H
 
2
O
Goosecreekite
Ca[Al
 
2
Si
 
6
O
 
16
] · 5H
 
2
O
Gottardiite
Na
 
3
Mg
 
3
Ca
 
5
Al
 
19
Si
 
117
O
 
272
 · 93H
 
2
O
Harmotome
(Ba
 
0.5
,Ca
 
0.5
,K,Na)
 
5
[Al
 
5
Si
 
11
O
 
32
] · 12H
 
2
O
Heulandite-Ba
(Ba,Ca,K,Na,Sr)
 
5
Al
 
9
Si
 
27
O
 
72
 · 22H
 
2
O
Heulandite-Ca
(Ca,Na)
 
2-3
Al
 
3
(Al,Si)
 
2
Si
 
13
O
 
36
 · 12H
 
2
O
Heulandite-K
(K,Na,Ca)
 
2-3
Al
 
3
(Al,Si)
 
2
Si
 
13
O
 
36
 · 12H
 
2
O
Heulandite-Na
(Na,Ca)
 
2-3
Al
 
3
(Al,Si)
 
2
Si
 
13
O
 
36
 · 12H
 
2
O
Heulandite-Sr
(Sr,Na,Ca)
 
2-3
Al
 
3
(Al,Si)
 
2
Si
 
13
O
 
36
 · 12H
 
2
O
Hsianghualite
Ca
 
3
Li
 
2
(Be
 
3
Si
 
3
O
 
12
)F
 
2
Laumontite
CaAl
 
2
Si
 
4
O
 
12
 · 4H
 
2
O
Leucite
K(AlSi
 
2
O
 
6
)
Lévyne
Lévyne-Ca
(Ca,Na
 
2
,K
 
2
)[Al
 
2
Si
 
4
O
 
12
] · 6H
 
2
O
Lévyne-Na
(Na
 
2
,Ca,K
 
2
)[Al
 
2
Si
 
4
O
 
12
] · 6H
 
2
O
Lovdarite
(Na,K,Ca)
 
4
(Be,Al)
 
2
Si
 
6
O
 
16
 · 4H
 
2
O
Maricopaite
Pb
 
7
Ca
 
2
(Si,Al)
 
48
O
 
100
 · 32H
 
2
O
Mazzite-Mg
K
 
2
Mg
 
2
Ca
 
1.5
Al
 
9.5
Si
 
26.5
O
 
72
 · 28H
 
2
O or near
Mazzite-Na
Na
 
4
[Al
 
4
Si
 
14
O
 
36
]
 
2
 · 30H
 
2
O
Merlinoite
(K,Na)
 
5
(Ca,Ba)
 
2
Al
 
9
Si
 
23
O
 
64
 · 23H
 
2
O
Mesolite
Na
 
2
Ca
 
2
Si
 
9
Al
 
6
O
 
30
 · 8H
 
2
O
Montesommaite
(K,Na)
 
9
Al
 
9
Si
 
23
O
 
64
 · 10H
 
2
O
Mordenite
(Na
 
2
,Ca,K
 
2
)Al
 
2
Si
 
10
O
 
24
 · 7H
 
2
O
Mutinaite
Na
 
3
Ca
 
4
Si
 
85
Al
 
11
O
 
192
 · 60H
 
2
O
Natrolite
Na
 
2
Al
 
2
Si
 
3
O
 
10
 · 2H
 
2
O
Natrolite Subgroup
Offretite
KCaMgAl
 
5
Si
 
13
O
 
36
 · 16H
 
2
O or near
Pahasapaite
Li
 
8
(Ca,Li,K)
 
10.5
Be
 
24
(PO
 
4
)
 
24
 · 38H
 
2
O
Paranatrolite
Na
 
2
Al
 
2
Si
 
3
O
 
10
 · 3H
 
2
O
Parthéite
CaAl
 
2
Si
 
2
O
 
8
 · 2H
 
2
O
Paulingite
Paulingite-Ca
(Ca,K
 
2
,Na
 
2
,Ba)
 
5
[Al
 
10
Si
 
35
O
 
90
] · 45H
 
2
O
Paulingite-K
(K
 
2
,Ca,Na
 
2
,Ba)
 
5
[Al
 
10
Si
 
35
O
 
90
] · 45H
 
2
O
Paulingite-Na
(Na
 
2
,K
 
2
,Ca,Ba)
 
5
[Al
 
10
Si
 
35
O
 
90
] · 45H
 
2
O
Perlialite
K
 
9
Na(Ca,Sr)[Al
 
2
Si
 
4
O
 
12
]
 
6
 · 15H
 
2
O
Phillipsite-Ca
(Ca
 
0.5
,K,Na,Ba
 
0.5
)
 
4-7
[Al
 
4-7
Si
 
12-9
O
 
32
.
 
 12H2O
Phillipsite-K
(K,Na,Ca
 
0.5
,Ba
 
0.5
)
 
4-7
[Al
 
4-7
Si
 
12-9
O
 
32
]
.
 
 12H
 
2
O
Phillipsite-Na
(Na,K,Ca
 
0.5
,Ba
 
0.5
)
 
4-7
[Al
 
4-7
Si
 
12-9
O
 
32
] · 12H
 
2
O
Pollucite
(Cs,Na)
 
2
(Al
 
2
Si
 
4
O
 
12
) · 2H
 
2
O
Roggianite
Ca
 
2
Be(OH)
 
2
Al
 
2
Si
 
4
O
 
13
 · 2.5H
 
2
O
Scolecite
CaAl
 
2
Si
 
3
O
 
10
 · 3H
 
2
O
Stellerite
Ca[Al
 
2
Si
 
7
O
 
18
] · 7H
 
2
O
Stilbite
Stilbite-Ca
NaCa
 
4
[Al
 
9
Si
 
27
O
 
72
] · nH
 
2
O
Stilbite-Na
(Na,Ca,K)
 
6-7
[Al
 
8
Si
 
28
O
 
72
] · nH
 
2
O
Terranovaite
(Na,Ca)
 
8
(Si
 
68
Al
 
12
)O
 
160
 · 29H
 
2
O
Tetranatrolite
Thomsonite-Ca
NaCa
 
2
Al
 
5
Si
 
5
O
 
20
 · 6H
 
2
O
Thomsonite-Sr
(Sr,Ca)
 
2
Na[Al
 
5
Si
 
5
O
 
20
] · 7H
 
2
O
Tschernichite
(Ca,Na
 
2
)[Al
 
2
Si
 
4
O
 
12
] · 4-8H
 
2
O
Tschörtnerite
Ca
 
4
(Ca,Sr,K,Ba)
 
3
Cu
 
3
[(OH)
 
2
|Al
 
3
Si
 
3
O
 
12
]
 
4
 · nH
 
2
O
Wairakite
Ca(Al
 
2
Si
 
4
O
 
12
) · 2H
 
2
O
Weinebeneite
CaBe
 
3
(PO
 
4
)
 
2
(OH)
 
2
 · 4H
 
2
O
Wenkite
(Ba,K)
 
4
(Ca,Na)
 
6
[(SO
 
4
)
 
3
|(Si,Al)
 
20
O
 
39
(OH)
 
2
] · 0.5H
 
2
O
Willhendersonite
KCa[Al
 
3
Si
 
3
O
 
12
] · 5H
 
2
O
Yugawaralite
CaAl
 
2
Si
 
6
O
 
16
 · 4H
 
2
O
Related Minerals - Nickel-Strunz Grouping):

- +
9.GD.05Gmelinite-Ca
(Ca,Na
 
2
)[Al
 
2
Si
 
4
O
 
12
] · 6H
 
2
O
9.GD.05Gmelinite-K
(K
 
2
,Na
 
2
,Ca)[Al
 
2
Si
 
4
O
 
12
] · 6H
 
2
O
9.GD.05Gmelinite-Na
(Na
 
2
,Ca)[Al
 
2
Si
 
4
O
 
12
] · 6H
 
2
O
9.GD.10Willhendersonite
KCa[Al
 
3
Si
 
3
O
 
12
] · 5H
 
2
O
9.GD.10Chabazite-Ca
(Ca,K
 
2
,Na
 
2
)
 
2
[Al
 
2
Si
 
4
O
 
12
]
 
2
 · 12H
 
2
O
9.GD.10Chabazite-K
(K
 
2
,Ca,Na
 
2
,Sr,Mg)
 
2
[Al
 
2
Si
 
4
O
 
12
]
 
2
 · 12H
 
2
O
9.GD.10Chabazite-Na
(Na
 
2
,K
 
2
,Ca,Sr,Mg)
 
2
[Al
 
2
Si
 
4
O
 
12
]
 
2
 · 12H
 
2
O
9.GD.10Chabazite-Sr
Sr
 
2
[Al
 
2
Si
 
4
O
 
12
]
 
2
 · 12H
 
2
O
9.GD.15Lévyne-Ca
(Ca,Na
 
2
,K
 
2
)[Al
 
2
Si
 
4
O
 
12
] · 6H
 
2
O
9.GD.15Lévyne-Na
(Na
 
2
,Ca,K
 
2
)[Al
 
2
Si
 
4
O
 
12
] · 6H
 
2
O
9.GD.20Bellbergite
(K,Ba,Sr)
 
2
Sr
 
2
Ca
 
2
(Ca,Na)
 
4
[Al
 
3
Si
 
3
O
 
12
]
 
6
 · 30H
 
2
O
9.GD.20Erionite-K
(K
 
2
,Ca,Na
 
2
)
 
2
[Al
 
4
Si
 
14
O
 
36
] · 15H
 
2
O
9.GD.20Erionite-Na
(Na
 
2
,K
 
2
,Ca)
 
2
[Al
 
4
Si
 
14
O
 
36
] · 15H
 
2
O
9.GD.25Offretite
KCaMgAl
 
5
Si
 
13
O
 
36
 · 16H
 
2
O or near
9.GD.25Wenkite
(Ba,K)
 
4
(Ca,Na)
 
6
[(SO
 
4
)
 
3
|(Si,Al)
 
20
O
 
39
(OH)
 
2
] · 0.5H
 
2
O
9.GD.30Faujasite-Ca
(Ca,Na
 
2
,Mg)
 
3.5
[Al
 
7
Si
 
17
O
 
48
] · 32H
 
2
O
9.GD.30Faujasite-Mg
(Mg,Na
 
2
,Ca)
 
3.5
[Al
 
7
Si
 
17
O
 
48
] · 32H
 
2
O
9.GD.30Faujasite-Na
(Na
 
2
,Ca,Mg)
 
3.5
[Al
 
7
Si
 
17
O
 
48
] · 32H
 
2
O
9.GD.35Maricopaite
Pb
 
7
Ca
 
2
(Si,Al)
 
48
O
 
100
 · 32H
 
2
O
9.GD.35Mordenite
(Na
 
2
,Ca,K
 
2
)Al
 
2
Si
 
10
O
 
24
 · 7H
 
2
O
9.GD.40Dachiardite-Ca
(Ca,Na
 
2
,K
 
2
)
 
5
Al
 
10
Si
 
38
O
 
96
 · 25H
 
2
O
9.GD.40Dachiardite-Na
(Na
 
2
,Ca,K
 
2
)
 
5
Al
 
10
Si
 
38
O
 
96
 · 25H
 
2
O
9.GD.45Epistilbite
CaAl
 
2
Si
 
6
O
 
16
 · 5H
 
2
O
9.GD.50Ferrierite-K
(K
 
2
,Na
 
2
,Mg,Ca)
 
3-5
Mg[Al
 
5-7
Si
 
27.5-31
O
 
72
] · 18H
 
2
O
9.GD.50Ferrierite-Mg
(Mg,Na
 
2
,K
 
2
,Ca)
 
3-5
Mg[Al
 
5-7
Si
 
27.5-31
O
 
72
] · 18H
 
2
O
9.GD.50Ferrierite-Na
(Na
 
2
,K
 
2
,Mg,Ca)
 
3-5
Mg[Al
 
5-7
Si
 
27.5-31
O
 
72
] · 18H
 
2
O
9.GD.55Bikitaite
LiAlSi
 
2
O
 
6
 · H
 
2
O

Other Names for Erionite-Ca

Other Languages:
Russian:Эрионит-Ca

Other Information

Health Warning:Carcinogenic upon inhalation of its dust, due to its fibrous structure (Ref.: IARC Monography 42:225-239, 1987)

References for Erionite-Ca

Reference List:

- +
Sheppard, R.A. and Gude, A.J. (1969b) Chemical composition and physical properties of the related zeolites offretite and erionite. American Mineralogist: 54: 875-886.

Gualtieri, A., G. Artioli, E. Passaglia, S. Bigi, A. Viani, and J.C. Hanson (1998): Crystal structure-crystal chemistry relationships in the zeolites erionite and offretite American Mineralogist: 83, 590-606.

Passaglia, E., G. Artioli, and A. Gualtieri (1998): Crystal chemistry of the zeolites erionite and offretite American Mineralogist: 83, 577-589.

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    • Localities for Erionite-Ca

    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.
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Ústí Region
        • Ústí nad Labem (Aussig)
    		Rychlý, R., Langrová, A., Had, J.: Chemicstry of cowlesite from Zezice, Bohemia. Scripta Fac. Sci. Nat. Univ. Masaryk. Brun, Geol., 1996, vol. 26, p. 43 - 44.
    France
     
    • Auvergne
      • Haute-Loire
        • Yssingeaux
          • Araules
    		Gualtieri A, et al. (1998) Crystal structure-crystal chemistry relationships in the zeolites erionite and offretite. American Mineralogist 83: 509-606
    Germany
     
    • Rhineland-Palatinate
      • Eifel
        • Mayen
          • Ettringen
            • Bellerberg volcano
    		Blass, G., Graf, H.W., Neue Mineralienfunde aus der Vulkaneifel, Mineralien-Welt 12/1, 17-25, 2001
    Italy
     
    • Sardinia
      • Oristano Province
    		Passaglia E., Artioli G. and Gualtieri A. (1998) : Crystal chemistry of the zeolites erionite and offretite. Amer. Mineral. 83, pagg. 577-589.
    • Veneto
      • Padova Province
        • Euganei Hills
          • Faedo
    		Passaglia E. and Taglavini A. (1995): Erionite from Faedo, Colli Euganei, Italy. N.Jb.Miner.Mh.,4, pagg.185-191.
      • Vicenza Province
        • Montecchio Maggiore
          • San Pietro
    		Passaglia E., Artioli G., Gualtieri A. - Crystal chemistry of zeolites erionite and offretite. Amer. Mineral. (1998), Vol. 83, pp. 577-589.
    Japan
     
    • Honshu Island
      • Chubu Region
        • Niigata Prefecture
    		Am. Mineral. 52, 1785; Can. Mineral. 35, 1571.
    Turkey
     
    • Central Anatolia Region
      • Nevşehir Province
    		USGS Open File report 10-1286
    UK
     
    • Northern Ireland
      • Co. Antrim
    		Paolo Grosso
    J. Skupiewski
    Maggie Wilson
    USA
     
    • Arizona
      • Pima Co.
    		O. Dzillas
    • North Dakota
      • Dunn Co.
    		USGS Open File report 10-1286
    JAMES MacPHERSON (Associated Press Writer) "North Dakota Gravel Sparks Fears." 5 April 2008
    JAMES MacPHERSON (Associated Press Writer) "North Dakota Gravel Sparks Fears." 5 April 2008
    • Oregon
      • Tillamook Co.
    		Micro Probe Volume IX Number 3
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