Lemoynite
A valid IMA mineral species
This page kindly sponsored by Douglas Merson
About Lemoynite
Charles Le Moyne
Formula:
(Na,K)2CaZr2Si10O26 · 5H2O
Colour:
white, slightly yellowish
Hardness:
4
Crystal System:
Monoclinic
Name:
Named in honor of Charles Le Moyne (2 August 1626, Dieppe, France â February 1685, Montreal, Canada), sieur de Longueuil (Quebec) and members of his family, prominent in early Canadian and American history. Le Moyne who arrived in Canada from France in 1641, became the patriarch of a very illustrious family that included his sons Pierre who served as Governor of Louisiana, and Jean-Baptist, the founder of New Orleans.
This page provides mineralogical data about Lemoynite.
Unique Identifiers
Mindat ID:
2371
Long-form identifier:
mindat:1:1:2371:5
GUID
(UUID V4):
(UUID V4):
2ba79e0b-c387-472c-b39a-43be8da1abaf
IMA Classification of Lemoynite
Approved
IMA Formula:
Na2CaZr2Si10O26 · 5-6H2O
First published:
1969
Classification of Lemoynite
9.DP.35
9 : SILICATES (Germanates)
D : Inosilicates
P : Transitional ino-phyllosilicate structures
9 : SILICATES (Germanates)
D : Inosilicates
P : Transitional ino-phyllosilicate structures
74.3.3.2
74 : PHYLLOSILICATES Modulated Layers
3 : Modulated Layers with joined strips
74 : PHYLLOSILICATES Modulated Layers
3 : Modulated Layers with joined strips
14.10.23
14 : Silicates not Containing Aluminum
10 : Silicates of Zr or Hf
14 : Silicates not Containing Aluminum
10 : Silicates of Zr or Hf
Mineral Symbols
As of 2021 there are now IMAâCNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Lmo | IMAâCNMNC | Warr, L.N. (2021). IMAâCNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Lemoynite
Colour:
white, slightly yellowish
Hardness:
4 on Mohs scale
Cleavage:
Perfect
{100}, {010} perfect, {001} imperfect or parting
{100}, {010} perfect, {001} imperfect or parting
Optical Data of Lemoynite
Type:
Biaxial (+)
RI values:
nα = 1.540 nβ = 1.553 nγ = 1.570
2V:
Measured: 80° , Calculated: 84°
Max Birefringence:
δ = 0.030
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:
weak
Chemistry of Lemoynite
Mindat Formula:
(Na,K)2CaZr2Si10O26 · 5H2O
Common Impurities:
Ti,Al,Fe,Nb,Mn,Cu,Zn,Mg,Sr,Rb
Crystallography of Lemoynite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Setting:
C2/c
Cell Parameters:
a = 10.38 Å, b = 15.94 Å, c = 18.6 Å
β = 104.59°
β = 104.59°
Ratio:
a:b:c = 0.651 : 1 : 1.167
Unit Cell V:
2,978.26 Ă
Âł (Calculated from Unit Cell)
Morphology:
{100} and {001}
Crystal Structure
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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) |
|---|---|---|---|---|---|---|---|
| 0005120 | Lemoynite | Le Page Y, Perrault G (1976) Structure cristalline de la lemoynite, (Na,K)2CaZr2Si10O26,5-6H2O The Canadian Mineralogist 14 132-138 |  | 1976 | 0 | 293 |
CIF Raw Data - click here to close
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 35 : Ultra-alkali and agpaitic igneous rocks |
Type Occurrence of Lemoynite
General Appearance of Type Material:
Spherulites about 0.5 cm in diameter
Reference:
Perrault, G., Semenov, E.I., Bikova, A.V., and Captinova, T.A. (1969) La lemoynite, un nouveau silicate hydraté de Zirconium et de sodium de St. Hilaire, Québec. Canadian Mineralogist: 9: 585-596.
Synonyms of Lemoynite
Other Language Names for Lemoynite
German:Lemoynit
Russian:ĐĐ”ĐŒŃĐ°ĐœĐžŃ
Simplified Chinese:æ°Žé ééçł
Spanish:Lemoynita
Traditional Chinese:æ°ŽééŁéŻçł
Common Associates
Associated Minerals Based on Photo Data:
| 3 photos of Lemoynite associated with Hisingerite | Fe3+2(Si2O5)(OH)4 · 2H2O |
| 3 photos of Lemoynite associated with Natrolemoynite | Na4Zr2Si10O26 · 9H2O |
Related Minerals - Strunz-mindat Grouping
| 9.DP. | Ferriprehnite | Ca2Fe3+(Si3AlO10)(OH)2 |
| 9.DP.05 | Meliphanite | (Ca,Na)2(Be,Al)[Si2O6(OH,F)] |
| 9.DP.15 | Leucosphenite | BaNa4Ti2B2Si10O30 |
| 9.DP.20 | Prehnite | Ca2Al2Si3O10(OH)2 |
| 9.DP.25 | Amstallite | CaAl[(Al,Si)4O8(OH)2](OH)2 · (H2O,Cl) |
| 9.DP.30 | Kvanefjeldite | Na4(Ca,Mn)(Si3O7)2(OH)2 |
| 9.DP.35 | Natrolemoynite | Na4Zr2Si10O26 · 9H2O |
| 9.DP.35 | Hogarthite | (Na,K)2CaTi2Si10O26 · 8H2O |
| 9.DP.40 | Altisite | Na3K6Ti2Al2Si8O26Cl3 |
| 9.DP.45 | Chiappinoite-(Y) | Y2Mn(Si3O7)4 |
| 9.DP.50 | Esquireite | BaSi6O13 · 7H2O |
Other Information
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 Lemoynite
mindat.org URL:
https://www.mindat.org/min-2371.html
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References for Lemoynite
Reference List:
Perrault, G., Semenov, E. I., Bikova, A. V., Captinova, T. A. (1969) La lemoynite, un nouveau silicate hydraté de Zirconium et de sodium de St. Hilaire, Québec. The Canadian Mineralogist, 9 (5) 585-596
Localities for Lemoynite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
â - 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).
All localities listed without proper references should be considered as questionable.
Canada (TL) | |
| Perrault et al. (1969) +4 other references |
| HorvĂĄth et al. (1998) |
| HorvĂĄth et al. (1998) | |
USA | |
| Dr. W. Stoll (private communication 2001 & 2004) |
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Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada