Laumontite
A valid IMA mineral species - grandfathered
This page is currently not sponsored. Click here to sponsor this page.
About Laumontite
Formula:
CaAl2Si4O12 Β· 4H2O
Colour:
Colorless to pink, white, gray, yellowish, brownish, golden brown
Lustre:
Vitreous, Pearly
Hardness:
3½ - 4
Specific Gravity:
2.23 - 2.41
Crystal System:
Monoclinic
Member of:
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 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 CΓ€sar von Leonhard.
Type Locality:
Zeolite Group. Laumontite Subgroup.
Normally it dehydrates in air to form a white powder. Specimens should be kept moist to prevent decomposition.
Normally it dehydrates in air to form a white powder. Specimens should be kept moist to prevent decomposition.
Unique Identifiers
Mindat ID:
2340
Long-form identifier:
mindat:1:1:2340:1
GUID
(UUID V4):
(UUID V4):
4a9da31f-b061-41b0-b6eb-9049112eedb9
IMA Classification of Laumontite
Approved, 'Grandfathered' (first described prior to 1959)
Classification of Laumontite
9.GB.10
9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
B : Chains of single connected 4-membered rings
9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
B : Chains of single connected 4-membered rings
77.1.1.4
77 : TECTOSILICATES Zeolites
1 : Zeolite group - True zeolites
77 : TECTOSILICATES Zeolites
1 : Zeolite group - True zeolites
16.9.23
16 : Silicates Containing Aluminum and other Metals
9 : Aluminosilicates of Ca
16 : Silicates Containing Aluminum and other Metals
9 : Aluminosilicates of Ca
Mineral Symbols
As of 2021 there are now IMAβCNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMAβCNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMAβCNMNC symbol. Older variants are listed for historical use only.
Symbol | Source | Reference |
---|---|---|
Lmt | IMAβCNMNC | Warr, L.N. (2021). IMAβCNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Lmt | Kretz (1983) | Kretz, R. (1983) Symbols of rock-forming minerals. American Mineralogist, 68, 277β279. |
Lmt | Siivolam & Schmid (2007) | Siivolam, J. and Schmid, R. (2007) Recommendations by the IUGS Subcommission on the Systematics of Metamorphic Rocks: List of mineral abbreviations. Web-version 01.02.07. IUGS Commission on the Systematics in Petrology. download |
Lmt | Whitney & Evans (2010) | Whitney, D.L. and Evans, B.W. (2010) Abbreviations for names of rock-forming minerals. American Mineralogist, 95, 185β187 doi:10.2138/am.2010.3371 |
Lmt | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
Lmt | Warr (2020) | Warr, L.N. (2020) Recommended abbreviations for the names of clay minerals and associated phases. Clay Minerals, 55, 261β264 doi:10.1180/clm.2020.30 |
Physical Properties of Laumontite
Vitreous, Pearly
Transparency:
Transparent, Translucent
Comment:
Pearly on cleavage
Colour:
Colorless to pink, white, gray, yellowish, brownish, golden brown
Streak:
White
Hardness:
3½ - 4 on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
on {010}{110}
on {010}{110}
Fracture:
Irregular/Uneven
Density:
2.23 - 2.41 g/cm3 (Measured) 2.25 g/cm3 (Calculated)
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°
Max Birefringence:
δ = 0.012
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
r < v distinct
Optical Extinction:
Y = b; X β§ a = 10Β°-26Β°; Z β§ c = 8Β°-33Β°.
Chemistry of Laumontite
Mindat Formula:
CaAl2Si4O12 Β· 4H2O
Common Impurities:
Na,K,Fe
Crystallography of Laumontite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 14.724(9) Å, b = 13.075(6) Å, c = 7.559(2) Å
β = 112.01(3)°
β = 112.01(3)°
Ratio:
a:b:c = 1.126 : 1 : 0.578
Unit Cell V:
1,349.17 Γ
Β³ (Calculated from Unit Cell)
Z:
4
Morphology:
Square prisms with steep oblique terminations, radiating, columnar, fibrous, massive.
Twinning:
On {100}, typically with terminal re-entrants.
Crystallographic forms of Laumontite
Crystal Atlas:
Image Loading
3d models and HTML5 code kindly provided by
www.smorf.nl.
Toggle
Edge Lines | Miller Indices | Axes
Transparency
Opaque | Translucent | Transparent
View
Along a-axis | Along b-axis | Along c-axis | Start rotation | Stop rotation
Toggle
Edge Lines | Miller Indices | Axes
Transparency
Opaque | Translucent | Transparent
View
Along a-axis | Along b-axis | Along c-axis | Start rotation | Stop rotation
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
View
CIF File Best | x | y | z | a | b | c
CIF File Best | x | y | z | a | b | c
Rotation
Stop | Start
Stop | Start
Labels
Console Off | On | Grey | Yellow
Console Off | On | Grey | Yellow
Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0002978 | Laumontite | Fridriksson T, Bish D L, Bird D K (2003) Hydrogen-bonded water in laumontite I: X-ray powder diffraction study of water site occupancy and structural changes in laumontite during room-temperature isothermal hydration/dehydration American Mineralogist 88 277-287 | 2003 | 0 | 293 | ||
0002979 | Laumontite | Fridriksson T, Bish D L, Bird D K (2003) Hydrogen-bonded water in laumontite I: X-ray powder diffraction study of water site occupancy and structural changes in laumontite during room-temperature isothermal hydration/dehydration American Mineralogist 88 277-287 | 2003 | 0 | 293 | ||
0002980 | Laumontite | Fridriksson T, Bish D L, Bird D K (2003) Hydrogen-bonded water in laumontite I: X-ray powder diffraction study of water site occupancy and structural changes in laumontite during room-temperature isothermal hydration/dehydration American Mineralogist 88 277-287 | 2003 | 0 | 293 | ||
0006493 | Laumontite | Stahl K, Artioli G (1993) A neutron powder diffraction study of fully deuterated laumontite European Journal of Mineralogy 5 851-856 | 1993 | 0 | 293 | ||
0007946 | Laumontite | Stahl K, Artioli G, Hanson J C (1996) The dehydration process in the zeolite laumontite: a real-time synchrotron X-ray powder diffraction study Physics and Chemistry of Minerals 23 328-336 | 1996 | 0 | 293 | ||
0007947 | Laumontite | Stahl K, Artioli G, Hanson J C (1996) The dehydration process in the zeolite laumontite: a real-time synchrotron X-ray powder diffraction study Physics and Chemistry of Minerals 23 328-336 | 1996 | 0 | 293 | ||
0007948 | Laumontite | Stahl K, Artioli G, Hanson J C (1996) The dehydration process in the zeolite laumontite: a real-time synchrotron X-ray powder diffraction study Physics and Chemistry of Minerals 23 328-336 | 1996 | 0 | 293 | ||
0007949 | Laumontite | Stahl K, Artioli G, Hanson J C (1996) The dehydration process in the zeolite laumontite: a real-time synchrotron X-ray powder diffraction study Physics and Chemistry of Minerals 23 328-336 | 1996 | 0 | 293 | ||
0007950 | Laumontite | Stahl K, Artioli G, Hanson J C (1996) The dehydration process in the zeolite laumontite: a real-time synchrotron X-ray powder diffraction study Physics and Chemistry of Minerals 23 328-336 | 1996 | 0 | 293 | ||
0008867 | Laumontite | Lee Y, Hriljac J A, Vogt T (2004) Pressure-induced migration of zeolitic water in laumontite Physics and Chemistry of Minerals 31 421-428 | 2004 | 0 | 293 | ||
0008868 | Laumontite | Lee Y, Hriljac J A, Vogt T (2004) Pressure-induced migration of zeolitic water in laumontite Physics and Chemistry of Minerals 31 421-428 | 2004 | 0.2 | 293 | ||
0008869 | Laumontite | Lee Y, Hriljac J A, Vogt T (2004) Pressure-induced migration of zeolitic water in laumontite Physics and Chemistry of Minerals 31 421-428 | 2004 | 0.3 | 293 | ||
0008870 | Laumontite | Lee Y, Hriljac J A, Vogt T (2004) Pressure-induced migration of zeolitic water in laumontite Physics and Chemistry of Minerals 31 421-428 | 2004 | 0.6 | 293 | ||
0008871 | Laumontite | Lee Y, Hriljac J A, Vogt T (2004) Pressure-induced migration of zeolitic water in laumontite Physics and Chemistry of Minerals 31 421-428 | 2004 | 1.1 | 293 | ||
0008872 | Laumontite | Lee Y, Hriljac J A, Vogt T (2004) Pressure-induced migration of zeolitic water in laumontite Physics and Chemistry of Minerals 31 421-428 | 2004 | 1.7 | 293 | ||
0008873 | Laumontite | Lee Y, Hriljac J A, Vogt T (2004) Pressure-induced migration of zeolitic water in laumontite Physics and Chemistry of Minerals 31 421-428 | 2004 | 2.4 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Image Loading
Radiation - Copper Kα
Data courtesy of RRUFF project at University of Arizona, used with permission.
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
4.16 Γ | (100) |
3.51 Γ | (80) |
9.5 Γ | (60) |
3.27 Γ | (55) |
6.84 Γ | (40) |
3.66 Γ | (35) |
3.03 Γ | (35) |
Comments:
Synthetic
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 3a: Earthβs earliest Hadean crust | >4.50 |
10 : Basalt-hosted zeolite minerals | |
Stage 3b: Earthβs earliest hydrosphere | >4.45 |
14 : Hot springs, geysers, and other subaerial geothermal minerals | |
16 : Low-π aqueous alteration of Hadean subaerial lithologies (see also #23) | |
Near-surface Processes | |
22 : Hydration and low-π subsurface aqueous alteration (see also #23) | |
Stage 5: Initiation of plate tectonics | <3.5-2.5 |
40 : Regional metamorphism (greenschist, amphibolite, granulite facies) |
Geological Setting:
Hydrothermal origin, decomposition of analcime, sandstone cement.
Type Occurrence of Laumontite
Synonyms of Laumontite
Other Language Names for Laumontite
Catalan:Laumontita
Dutch:Laumontiet
German:Γdelforsit
Laumontit
Laumontit
Hungarian:Laumontit
Italian:Laumontite
Japanese:ζΏζ²Έη³
Luxembourgish:Laumontit
Polish:Laumontyt
Russian:ΠΠΎΠΌΠΎΠ½ΡΠΈΡ
Simplified Chinese:ζ΅ζ²Έη³
Slovak:Laumontit
Spanish:Laumontita
Varieties of Laumontite
Caporcianite | A white, friable, massive variety of laumontite. |
Leonhardite | A name for partially dehydrated, opaque laumontite. |
Vanadio-laumontite | A V-bearing variety of laumontite. It was descrided as a yellow-red substance deposited on first-generation calcite and covered with very tiny second-generation calcite crystals; it also constitutes a cement of the green Cu-V minerals (Antipov, 1908). Se... |
Relationship of Laumontite to other Species
Member of:
Other Members of this group:
Alflarsenite | NaCa2Be3Si4O13(OH) Β· 2H2O | Mon. 2 : P21 |
Amicite | K2Na2Al4Si4O16 Β· 5H2O | Mon. 2 |
Ammonioleucite | (NH4)(AlSi2O6) | Tet. 4/m : I41/a |
Analcime | Na(AlSi2O6) Β· H2O | Tric. 1 : P1 |
Bellbergite | (K,Ba,Sr)2Sr2Ca2(Ca,Na)4[Al3Si3O12]6 Β· 30H2O | Hex. |
Bikitaite | LiAlSi2O6 Β· H2O | Tric. 1 : P1 |
Boggsite | Ca8Na3(Si,Al)96O192 Β· 70H2O | Orth. mmm (2/m 2/m 2/m) : Imma |
Brewsterite Subgroup | Zeolite Group. | |
Chabazite-Levyne Subgroup | M[Al2Si4O12] Β· 6H2O | |
Chiavennite | CaMnBe2Si5O13(OH)2 Β· 2H2O | Mon. 2/m : P21/b |
Clinoptilolite Subgroup | M3-6(Si30Al6)O72 Β· 20H2O | |
Cowlesite | CaAl2Si3O10 Β· 6H2O | Orth. mmm (2/m 2/m 2/m) |
Dachiardite Subgroup | Zeolite Group. | |
Direnzoite | NaK6MgCa2(Al13Si47O120) Β· 36H2O | Orth. mmm (2/m 2/m 2/m) : Pmmn |
Edingtonite | Ba[Al2Si3O10] Β· 4H2O | Orth. 2 2 2 : P21 21 21 |
Epistilbite | CaAl2Si6O16 Β· 5H2O | Mon. |
Erionite Subgroup | M2[Al4Si14O36] Β· 15H2O | |
Faujasite Subgroup | M3.5[Al7Si17O48] Β· 32H2O | |
Ferrierite Subgroup | Zeolite Group. | |
Ferrochiavennite | Ca1-2Fe[(Si,Al,Be)5Be2O13(OH)2] Β· 2H2O | Mon. 2/m : P21/b |
FlΓΆrkeite | (K3Ca2Na)[Al8Si8O32] Β· 12H2O | Tric. 1 : P1 |
Garronite Subgroup | ||
Gaultite | Na4Zn2Si7O18 Β· 5H2O | Orth. mm2 : Fdd2 |
Gismondine Subgroup | Zeolite Group. | |
Gmelinite Subgroup | In 1997, gmelinite was split into Gmelinite-Ca, Gmelinite-Na and Gmelinite-K. | |
Gobbinsite | Na5(Si11Al5)O32 Β· 11H2O | Orth. mmm (2/m 2/m 2/m) : Pnma |
Goosecreekite | Ca[Al2Si6O16] Β· 5H2O | Mon. 2 : P21 |
Gottardiite | Na3Mg3Ca5Al19Si117O272 Β· 93H2O | Orth. mmm (2/m 2/m 2/m) : Cmca |
Heulandite Subgroup | (Na/Ca/K)5-6[Al8-9 Si27-28 O72] Β· nH2O | |
Hsianghualite | Ca3Li2(Be3Si3O12)F2 | Iso. 4 3 2 : I41 3 2 |
Kirchhoffite | Cs(BSi2O6) | Tet. 4/mmm (4/m 2/m 2/m) : I41/acd |
Loomisite | Ba[Be2P2O8] Β· H2O | Mon. m |
Lovdarite | K2Na6Be4Si14O36 Β· 9H2O | Orth. mm2 |
Maricopaite | Pb7Ca2(Si,Al)48O100 Β· 32H2O | Orth. |
Martinandresite | Ba2(Al4Si12O32) Β· 10H2O | Orth. mmm (2/m 2/m 2/m) : Pmmn |
Mazzite Subgroup | Zeolite Group. | |
Merlinoite | (K,Na)5(Ca,Ba)2Al9Si23O64 Β· 23H2O | Orth. mmm (2/m 2/m 2/m) : Immm |
Montesommaite | (K,Na)9Al9Si23O64 Β· 10H2O | Orth. mm2 : Fdd2 |
Mordenite | (Na2,Ca,K2)4(Al8Si40)O96 Β· 28H2O | Orth. |
Mutinaite | Na3Ca4Si85Al11O192 Β· 60H2O | Orth. mmm (2/m 2/m 2/m) : Pnma |
Nabesite | Na2BeSi4O10 Β· 4H2O | Orth. 2 2 2 : P21 21 21 |
Natrolite Subgroup | A subgroup of the Zeolite Group. | |
Offretite | KCaMg(Si13Al5)O36 Β· 15H2O | Hex. 6 m2 : P6m2 |
Pahasapaite | Li8(Ca,Li,K)10.5Be24(PO4)24 Β· 38H2O | Iso. 2 3 : I2 3 |
ParthΓ©ite | Ca2(Si4Al4) O15 (OH)2 Β· 4H2O | Mon. 2/m : B2/b |
Paulingite Subgroup | Paulingite was originally described in 1960. | |
Perlialite | K9Na(Ca,Sr)[Al2Si4O12]6 Β· 15H2O | Hex. 6/mmm (6/m 2/m 2/m) : P6/mmm |
Phillipsite Subgroup | Zeolite Group. | |
Pollucite | (Cs,Na)2(Al2Si4O12) Β· 2H2O | Iso. m3m (4/m 3 2/m) : Ia3d |
Roggianite | Ca2Be(OH)2Al2Si4O13 Β· 2.5H2O | Tet. 4/mmm (4/m 2/m 2/m) : I4/mcm |
Stilbite Subgroup | M6-7[Al8-9Si27-28O72] Β· nH2O | |
Terranovaite | (Na,Ca)8(Si68Al12)O160 Β· 29H2O | Orth. |
Thomsonite Subgroup | The large majority of "thomsonite" is thomsonite-Ca. | |
Tschernichite | (Ca,Na2)[Al2Si4O12] Β· 4-8H2O | Tet. 4/mmm (4/m 2/m 2/m) : P4/mmm |
TschΓΆrtnerite | Ca4(Ca,Sr,K,Ba)3Cu3[Al3Si3O12]4(OH)8 Β· nH2O | Iso. m3m (4/m 3 2/m) : Fm3m |
UM1996-38-SiO:AlCaHNa | Na-Ca-Al-Si-O-H | |
UM1999-33-SiO:AlHKNa | K7Na5Al12Si20O64 Β· 24H2O | |
UM2002-40-SiO:AlCaHKMgNa | (Mg,Ca,Na,K)7.5(Al12.8Si51.2)O128 Β· 65H2O | Tet. 4 2 2 : P41 2 2 |
Unnamed (Ca analogue of Merlinoite) | (Ca,K,Na)5(Ca,Ba)2Al9Si23O64 Β· 23H2O ? | |
Wairakite | Ca(Al2Si4O12) Β· 2H2O | Mon. 2/m : B2/m |
Weinebeneite | CaBe3(PO4)2(OH)2 Β· 4H2O | Mon. m : Bb |
Wenkite | (Ba,K)4(Ca,Na)6[(Si,Al)20O39(OH)2](SO4)3 Β· 0.5H2O | Hex. 6 m2 : P62m |
Willhendersonite | KCa[Al3Si3O12] Β· 5H2O | Tric. 1 : P1 |
Yugawaralite | CaAl2Si6O16 Β· 4H2O | Mon. m : Pb |
Common Associates
Associated Minerals Based on Photo Data:
300 photos of Laumontite associated with Calcite | CaCO3 |
295 photos of Laumontite associated with Prehnite | Ca2Al2Si3O10(OH)2 |
199 photos of Laumontite associated with Stilbite Subgroup | M6-7[Al8-9Si27-28O72] Β· nH2O |
196 photos of Laumontite associated with Quartz | SiO2 |
108 photos of Laumontite associated with Heulandite Subgroup | (Na/Ca/K)5-6[Al8-9 Si27-28 O72] Β· nH2O |
76 photos of Laumontite associated with Stilbite-Ca | NaCa4(Si27Al9)O72 Β· 28H2O |
75 photos of Laumontite associated with Heulandite-Ca | (Ca,Na)5(Si27Al9)O72 Β· 26H2O |
65 photos of Laumontite associated with Fluorapophyllite-(K) | KCa4(Si8O20)(F,OH) Β· 8H2O |
64 photos of Laumontite associated with Gyrolite | NaCa16Si23AlO60(OH)8 Β· 14H2O |
64 photos of Laumontite associated with Apophyllite Group | AB4[Si8O22]X Β· 8H2O |
Related Minerals - Strunz-mindat Grouping
9.GB.05 | Ammonioleucite | (NH4)(AlSi2O6) |
9.GB.05 | Analcime | Na(AlSi2O6) Β· H2O |
9.GB.05 | Hsianghualite | Ca3Li2(Be3Si3O12)F2 |
9.GB.05 | Lithosite | K6Al4Si8O25 Β· 2H2O |
9.GB.05 | Leucite | K(AlSi2O6) |
9.GB.05 | Pollucite | (Cs,Na)2(Al2Si4O12) Β· 2H2O |
9.GB.05 | Wairakite | Ca(Al2Si4O12) Β· 2H2O |
9.GB.05 va | Germanate-analcime | NaAlGe2O6 Β· H2O |
9.GB.05 va | Germanate-leucite | KAlGe2O6 |
9.GB.05 | Kirchhoffite | Cs(BSi2O6) |
9.GB.05 | Fabrièsite | Na3Al3Si3O12 · 2H2O |
9.GB.15 | Yugawaralite | CaAl2Si6O16 Β· 4H2O |
9.GB.20 | Roggianite | Ca2Be(OH)2Al2Si4O13 Β· 2.5H2O |
9.GB.25 | Goosecreekite | Ca[Al2Si6O16] Β· 5H2O |
9.GB.30 | Montesommaite | (K,Na)9Al9Si23O64 Β· 10H2O |
9.GB.35 | ParthΓ©ite | Ca2(Si4Al4) O15 (OH)2 Β· 4H2O |
Other Information
Special Storage/
Display Requirements:
Display Requirements:
commonly dehydrates
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Laumontite
mindat.org URL:
https://www.mindat.org/min-2340.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Laumontite
Reference List:
HaΓΌy, RenΓ© Just (1809) Tableau comparatif des rΓ©sultats de la Cristallographie et de l'analyse Chimique, relativement a la Classification des MinΓ©raux.. Chez Courcier, Paris.pp.195-196 - Laumontite
Liversidge, Archibald (1876) VI.βNote on a mineral from New South Wales, presumed to be Laumontite. Mineralogical Magazine and Journal of the Mineralogical Society, 1 (2) 54 doi:10.1180/minmag.1876.001.2.07
Coombs, D.S. (1952) Cell size, optical properties and chemical composition of laumontite and leonhardite. With a note on regional occurrences in New Zealand. American Mineralogist, 37 (9-10) 812-830
Liou, J. G. (1971) Stilbite-laumontite equilibrium. Contributions to Mineralogy and Petrology, 31 (3) 171-177 doi:10.1007/bf00399649
Coombs, Douglas S., Alberti, Alberto, Armbruster, Thomas, Artioli, Gilberto, Colella, Carmine, Galli, Ermanno, Grice, Joel D., Liebau, Friedrich, Mandarino, Joseph A., Minato, Hideo, Nickel, Ernest H., Passaglia, Elio, Peacor, Donald R., Quartieri, Simona, Rinaldi, Romano, Ross, Malcolm I., Sheppard, Richard A., Tillmanns, Ekkehart, Vezzalini, Giovanna (1997) Recommended nomenclature for zeolite minerals; report of the Subcommittee on Zeolites of the International Mineralogical Association, Commission on New Minerals and Mineral Names. The Canadian Mineralogist, 35 (6) 1571-1606
Stolz, Jano, Armbruster, Thomas (1997) X-ray single-crystal structure refinement of Na, K-rich laumontite, originally designated 'primary leonhardite'. Neues Jahrbuch fΓΌr Mineralogie - Monatshefte, 1997 (3) 131-144 doi:10.1127/njmm/1997/1997/131
Localities for Laumontite
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
β - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Quick NavTopAbout LaumontiteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystallographic forms Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesVarietiesRelationshipsCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
La Cabrera, Community of Madrid, Spain