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Laumontite

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Formula:
CaAl
 
2
Si
 
4
O
 
12
· 4H
 
2
O
System:MonoclinicColour:Colorless to pink, ...
Hardness:3½ - 4
Member of:Zeolite Group
Name:Named Laumonite by Abraham Gottlieb Werner in 1805 in honor of Francois Pierre Nicolas Gillet de Laumont [May 28, 1747 Laumont near Montmorency, France - June 1, 1834 Paris, France], Inspector General of Mines and who first found the mineral as well as plumbogummite. He was also a mineral collector. The name was changed to its current spelling, Laumontite, in 1821 by Karl Cäsar von Leonhard.


Zeolite Group. Laumontite Subgroup.

Normally it dehydrates in air to form a white powder. Specimens should be kept moist to prevent decomposition.

Classification of Laumontite

IMA status:Approved 1805
Strunz 8th edition ID:8/J.22-50
Nickel-Strunz 10th (pending) edition ID:9.GB.10

9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
B : Chains of single connected 4-membered rings
Dana 8th edition ID:77.1.1.4

77 : TECTOSILICATES Zeolites
1 : Zeolite group - True zeolites
Hey's CIM Ref.:16.9.23

16 : Silicates Containing Aluminum and other Metals
9 : Aluminosilicates of Ca
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Type Occurrence of Laumontite

Type Locality:Huelgoat (Locmarria-Berrien), Finistère, Brittany, France
Year of Discovery:1805

Occurrences of Laumontite

Geological Setting:Hydrothermal origin, decomposition of analcime, sandstone cement.

Physical Properties of Laumontite

Lustre:Vitreous, Pearly
Diaphaneity (Transparency):Transparent, Translucent
Comment:Pearly on cleavage
Colour:Colorless to pink, white, gray, yellowish, brownish, golden brown
Streak:White
Hardness (Mohs):3½ - 4
Tenacity:Brittle
Cleavage:Perfect
on {010}{110}
Fracture:Irregular/Uneven
Density (measured):2.23 - 2.41 g/cm3
Density (calculated):2.25 g/cm3

Crystallography of Laumontite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:B2/m
Cell Parameters:a = 14.724(9) Å, b = 13.075(6) Å, c = 7.559(2) Å
β = 112.01(3)°
Ratio:a:b:c = 1.126 : 1 : 0.578
Unit Cell Volume:V 1,349.17 ų (Calculated from Unit Cell)
Z:4
Morphology:Square prisms with steep oblique terminations, radiating, columnar, fibrous, massive
Twinning:On {100}
Crystal Atlas:
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Laumontite no.49 - Goldschmidt (1913-1926)

About Crystal Atlas

The mindat.org Crystal Atlas allows you to view a selection of crystal drawings of real and idealised crystal forms for this mineral and, in certain cases, 3d rotating crystal objects. The 3d models and HTML5 code are kindly provided by www.smorf.nl.

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Edge Lines | Miller Indicies | Axes

Transparency
Opaque | Translucent | Transparent

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Along a-axis | Along b-axis | Along c-axis | Start rotation | Stop rotation
X-Ray Powder Diffraction:
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Radiation - Copper Kα
Data Set:
Horizontal Axis: ° to ° Vertical Axis: % Source Data: Filtered Data:
Data courtesy of RRUFF project at University of Arizona, used with permission.

Optical Data of Laumontite

Type:Biaxial (-)
RI values: nα = 1.502 - 1.514 nβ = 1.512 - 1.522 nγ = 1.514 - 1.525
2V:Measured: 26° to 47°, Calculated: 34° to 44°
Maximum Birefringence:δ = 0.012

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Low
Dispersion:r < v distinct

Chemical Properties of Laumontite

Formula:
CaAl
 
2
Si
 
4
O
 
12
· 4H
 
2
O
Simplified for copy/paste:CaAl2Si4O12·4H2O
Essential elements:Al, Ca, H, O, Si
All elements listed in formula:Al, Ca, H, O, Si
Common Impurities:Na,K,Fe

Relationship of Laumontite to other Species

Member of:Zeolite Group
Other Members of Group:

- +
Alflarsenite
NaCa
 
2
Be
 
3
Si
 
4
O
 
13
(OH) · 2H
 
2
O
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
Beaumontite (of Lévy)
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-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-Ca
(Ca,K
 
2
,Na
 
2
)
 
2
[Al
 
4
Si
 
14
O
 
36
] · 15H
 
2
O
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
Ferrochiavennite
Ca
 
1-2
Fe[(Si,Al,Be)
 
5
Be
 
2
O
 
13
(OH)
 
2
]•2H
 
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
Kirchhoffite
Cs(BSi
 
2
O
 
6
)
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
K
 
2
Na
 
6
Be
 
4
Si
 
14
O
 
36
•9H
 
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
Nabesite
Na
 
2
BeSi
 
4
O
 
10
· 4H
 
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-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
Strontiohurlbutite
SrBe
 
2
(PO
 
4
)
 
2
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
Na(Sr,Ca)
 
2
[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.GB.05Ammonioleucite
(NH
 
4
,K)(AlSi
 
2
O
 
6
)
9.GB.05Analcime
Na
 
2
(Al
 
2
Si
 
4
O
 
12
) · 2H
 
2
O
9.GB.05Hsianghualite
Ca
 
3
Li
 
2
(Be
 
3
Si
 
3
O
 
12
)F
 
2
9.GB.05Lithosite
K
 
6
Al
 
4
Si
 
8
O
 
25
· 2H
 
2
O
9.GB.05Leucite
K(AlSi
 
2
O
 
6
)
9.GB.05Pollucite
(Cs,Na)
 
2
(Al
 
2
Si
 
4
O
 
12
) · 2H
 
2
O
9.GB.05Wairakite
Ca(Al
 
2
Si
 
4
O
 
12
) · 2H
 
2
O
9.GB.05Kirchhoffite
Cs(BSi
 
2
O
 
6
)
9.GB.15Yugawaralite
CaAl
 
2
Si
 
6
O
 
16
· 4H
 
2
O
9.GB.20Roggianite
Ca
 
2
Be(OH)
 
2
Al
 
2
Si
 
4
O
 
13
· 2.5H
 
2
O
9.GB.25Goosecreekite
Ca[Al
 
2
Si
 
6
O
 
16
] · 5H
 
2
O
9.GB.30Montesommaite
(K,Na)
 
9
Al
 
9
Si
 
23
O
 
64
· 10H
 
2
O
9.GB.35Parthéite
CaAl
 
2
Si
 
2
O
 
8
· 2H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
16.9.1Gehlenite
Ca
 
2
Al(AlSiO
 
7
)
16.9.2Anorthite
CaAl
 
2
Si
 
2
O
 
8
16.9.3Yoshiokaite
(Ca,Na)[Al(Al,Si)O
 
4
]
16.9.4Svyatoslavite
CaAl
 
2
Si
 
2
O
 
8
16.9.5Dmisteinbergite
CaAl
 
2
Si
 
2
O
 
8
16.9.6Grossular
Ca
 
3
Al
 
2
(SiO
 
4
)
 
3
16.9.7Vuagnatite
CaAl(SiO
 
4
)(OH)
16.9.8Zoisite
{Ca
 
2
}{Al
 
3
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
16.9.9Clinozoisite
{Ca
 
2
}{Al
 
3
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
16.9.10Prehnite
Ca
 
2
Al
 
2
Si
 
3
O
 
10
(OH)
 
2
16.9.11Kamaishilite
Ca
 
2
(Al
 
2
SiO
 
6
)(OH)
 
2
16.9.12Bicchulite
Ca
 
2
(Al
 
2
SiO
 
6
)(OH)
 
2
16.9.13Margarite
CaAl
 
2
(Al
 
2
Si
 
2
O
 
10
)(OH)
 
2
16.9.14Chantalite
CaAl
 
2
(SiO
 
4
)(OH)
 
4
16.9.15Cebollite
Ca
 
5
Al
 
2
(SiO
 
4
)
 
3
(OH)
 
4
16.9.17Katoite
Ca
 
3
Al
 
2
(SiO
 
4
)
 
3-x
(OH)
 
4x
16.9.18Lawsonite
CaAl
 
2
(Si
 
2
O
 
7
)(OH)
 
2
· H
 
2
O
16.9.19Parthéite
CaAl
 
2
Si
 
2
O
 
8
· 2H
 
2
O
16.9.20Wairakite
Ca(Al
 
2
Si
 
4
O
 
12
) · 2H
 
2
O
16.9.21Vertumnite
Ca
 
4
Al
 
4
Si
 
4
O
 
6
(OH)
 
24
· 3H
 
2
O
16.9.22Scolecite
CaAl
 
2
Si
 
3
O
 
10
· 3H
 
2
O
16.9.24Yugawaralite
CaAl
 
2
Si
 
6
O
 
16
· 4H
 
2
O
16.9.25Gismondine-Ca
CaAl
 
2
Si
 
2
O
 
8
· 4H
 
2
O
16.9.26Epistilbite
CaAl
 
2
Si
 
6
O
 
16
· 5H
 
2
O
16.9.27Goosecreekite
Ca[Al
 
2
Si
 
6
O
 
16
] · 5H
 
2
O
16.9.28Cowlesite
CaAl
 
2
Si
 
3
O
 
10
· 6H
 
2
O
16.9.30Stellerite
Ca[Al
 
2
Si
 
7
O
 
18
] · 7H
 
2
O
16.9.31Strätlingite
Ca
 
2
Al
 
2
SiO
 
7
· 8H
 
2
O
16.9.32Amstallite
CaAl(Si,Al)
 
4
O
 
8
(OH)
 
4
· (H
 
2
O,Cl)

Other Names for Laumontite

Synonyms:
Schneiderite
Other Languages:
Catalan:Laumontita
Dutch:Laumontiet
German:Ädelforsit
Laumontit
Hungarian:Laumontit
Italian:Laumontite
Luxembourgish:Laumontit
Polish:Laumontyt
Russian:Ломонтит
Simplified Chinese:浊沸石
Slovak:Laumontit
Spanish:Laumontita
Varieties:
CaporcianiteLeonharditeVanadio-laumontite

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 Laumontite

Reference List:

- +
Madsen, B.M. & K.J. Murata (1970), Occurrence of Laumontite in the Tertiary sandstones of the central Coast Ranges of California USGS PP 700-D: 188-195.

Neues Jahrbuch für Mineralogie, Monatshefte (1970): 298-310.

Thompson, A.B. (1970) Laumontite equilibria and the zeolite facies. American Journal of Science: 269: 267-275.

Journal of Petrology (1971): 12: 379.

Neues Jahrbuch für Mineralogie, Monatshefte (1992): 385.

Zeolites (1993): 13: 249.

European Journal of Mineralogy (1993): 5: 851.

Physics and Chemistry of Minerals (1996): 23: 328.

Canadian Mineralogist (1997): 35: 1571.

Reviews in Mineralogy and Geochemistry (2001): 45: 1.

Reviews in Mineralogy and Geochemistry (2001): 45: 69.

Reviews in Mineralogy and Geochemistry (2001): 45: 117.

American Mineralogist (2003): 88 (2003), 277.

Lee, Y., J.A. Hriljac, & T. Vogt (2004a), Pressure-induced migration of zeolitic water in laumontite: Physics and Chemistry of Minerals: 31: 421-428.

Internet Links for Laumontite

Search Engines:
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  • External Links:
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  • Look for Laumontite on Wikipedia
  • Look for Laumontite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Laumontite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
  • Top quality minerals from Kristalle of California
  • The Arkenstone - Fine Minerals
  • SpiriferMinerals.com - high quality low prices
  • Buy minerals from YourMineralCollection
  • Fine Minerals from Weinrich Minerals, Inc.
  • Find Laumontite on www.crystalclassics.co.uk
  • Buy RARE Minerals from Rocks of Africa
  • Wilensky Fine Minerals
  • Rare and Unusual minerals at Mineralogical Research Company
  • Fabre Minerals - search for Laumontite specimens
  • Search for Laumontite on Well-Arranged Molecules
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Specimens:The following Laumontite specimens are currently listed for sale on minfind.com.

    Localities for Laumontite

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