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Lemoynite

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Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada
© Stephan Wolfsried

Show Lemoynite Photos (8)
Formula:
(Na,K)
 
2
CaZr
 
2
Si
 
10
O
 
26
·5H
 
2
O
System:MonoclinicHardness:4
This page provides mineralogical data about Lemoynite.

Classification of Lemoynite

IMA status:Approved
Strunz 8th edition ID:8/G.09-10
Nickel-Strunz 10th (pending) edition ID:9.DP.35

9 : SILICATES (Germanates)
D : Inosilicates
P : Transitional ino-phyllosilicate structures
Dana 8th edition ID:74.3.3.2

74 : PHYLLOSILICATES Modulated Layers
3 : Modulated Layers with joined strips
Hey's CIM Ref.:14.10.23

14 : Silicates not Containing Aluminum
10 : Silicates of Zr or Hf
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Type Occurrence of Lemoynite

Type Locality:Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada
Year of Discovery:1969

Physical Properties of Lemoynite

Hardness (Mohs):4

Crystallography of Lemoynite

Crystal System:Monoclinic
Cell Parameters:a = 10.38Å, b = 15.94Å, c = 18.6Å
β = 104.59°
Ratio:a:b:c = 0.651 : 1 : 1.167
Unit Cell Volume:V 2,978.26 ų (Calculated from Unit Cell)

Optical Data of Lemoynite

Type:Biaxial (+)
RI values: nα = 1.540 nβ = 1.553 nγ = 1.570
2V:Measured: 80° , Calculated: 84°
Maximum Birefringence:δ = 0.030

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

Chemical Properties of Lemoynite

Formula:
(Na,K)
 
2
CaZr
 
2
Si
 
10
O
 
26
·5H
 
2
O
Essential elements:Ca, H, Na, O, Si, Zr
All elements listed in formula:Ca, H, K, Na, O, Si, Zr
Common Impurities:Ti,Al,Fe,Nb,Mn,Cu,Zn,Mg,Sr,Rb

Relationship of Lemoynite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.DP.05Meliphanite
(Ca,Na)
 
2
(Be,Al)[Si
 
2
O
 
6
(OH,F)]
9.DP.15Leucosphenite
BaNa
 
4
Ti
 
2
B
 
2
Si
 
10
O
 
30
9.DP.20Prehnite
Ca
 
2
Al
 
2
Si
 
3
O
 
12
(OH)
9.DP.25Amstallite
CaAl(Si,Al)
 
4
O
 
8
(OH)
 
4
·(H
 
2
O,Cl)
9.DP.30Kvanefjeldite
Na
 
4
(Ca,Mn)(Si
 
3
O
 
7
)
 
2
(OH)
 
2
9.DP.35Natrolemoynite
Na
 
4
Zr
 
2
Si
 
10
O
 
26
•
 
9
H
 
2
O
9.DP.40Altisite
Na
 
3
K
 
6
Ti
 
2
Al
 
2
Si
 
8
O
 
26
Cl
 
3
Related Minerals - Hey's Index Grouping:

- +
14.10.1Zircon
Zr[SiO
 
4
]
14.10.2Hafnon
(Hf,Zr)[SiO
 
4
]
14.10.3Zektzerite
LiNa(Zr,Ti,Hf)Si
 
6
O
 
15
14.10.4Parakeldyshite
Na
 
2
ZrSi
 
2
O
 
7
14.10.5Vlasovite
Na
 
2
ZrSi
 
4
O
 
11
14.10.6Keldyshite
(Na,H)
 
2
ZrSi
 
2
O
 
7
14.10.7Gaidonnayite
Na
 
2
Zr[Si
 
3
O
 
9
]·2H
 
2
O
14.10.8Terskite
Na
 
4
ZrSi
 
6
O
 
16
·2H
 
2
O
14.10.9Elpidite
Na
 
2
ZrSi
 
6
O
 
15
·3H
 
2
O
14.10.10Hilairite
Na
 
2
Zr[SiO
 
3
]
 
3
·3H
 
2
O
14.10.11Petarasite
Na
 
5
Zr
 
2
[(OH,Cl)|Si
 
6
O
 
18
]·2H
 
2
O
14.10.12Khibinskite
K
 
2
ZrSi
 
2
O
 
7
14.10.13Wadeite
K
 
2
Zr[Si
 
3
O
 
9
]
14.10.14Dalyite
K
 
2
ZrSi
 
6
O
 
15
14.10.15Kostylevite
K
 
2
ZrSi
 
3
O
 
9
·H
 
2
O
14.10.16Umbite
K
 
2
(Zr,Ti)Si
 
3
O
 
9
·H
 
2
O
14.10.17Paraumbite
K
 
3
Zr
 
2
H(Si
 
3
O
 
9
)
 
2
·nH
 
2
O
14.10.18Georgechaoite
NaKZr[Si
 
3
O
 
9
]·2H
 
2
O
14.10.19Gittinsite
CaZr[Si
 
2
O
 
7
]
14.10.20Calciocatapleiite
CaZrSi
 
3
O
 
9
·2H
 
2
O
14.10.21Calciohilairite
CaZr[SiO
 
3
]
 
3
·3H
 
2
O
14.10.22Armstrongite
CaZr[Si
 
6
O
 
15
]·3H
 
2
O
14.10.24Catapleiite
Na
 
2
Zr[Si
 
3
O
 
9
]·2H
 
2
O
14.10.25Baghdadite
Ca
 
3
(Zr,Ti)[O
 
2
|Si
 
2
O
 
7
]
14.10.26Lovozerite
Na
 
2
Ca(Zr,Ti)[Si
 
6
O
 
12
(OH,O)
 
6
]*H
 
2
O
14.10.27Låvenite
(Na,Ca)
 
2
(Mn
2+
 
,Fe
2+
 
)(Zr,Ti)[(O,OH,F)
 
2
|Si
 
2
O
 
7
]
14.10.28Penkvilksite
Na
 
4
Ti
 
2
Si
 
8
O
 
22
·4H
 
2
O
14.10.29Darapiosite
KNa
 
2
Li(Mn,Zn)
 
2
ZrSi
 
12
O
 
30
14.10.30Bazirite
BaZr[Si
 
3
O
 
9
]
14.10.31Komkovite
BaZr[Si
 
3
O
 
9
]·3H
 
2
O
14.10.32Zirsinalite
Na
 
6
(Ca,Mn
2+
 
,Fe
2+
 
)Zr[Si
 
6
O
 
18
]
14.10.33Tranquillityite
(Fe
2+
 
,Ca)
 
8
(Zr,Y)
 
2
Ti
 
3
[O
 
4
|SiO
 
4
]
 
3

Other Names for Lemoynite

Synonyms:
IMA1968-013
Other Languages:
German:Lemoynit
Russian:Лемуанит
Spanish:Lemoynita

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 Lemoynite

Reference List:American Mineralogist (1972): 57: 1913.

Canadian Mineralogist (1976): 132-138.

Mineralogical Record (1990): 21: 318.

Internet Links for Lemoynite

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    Localities for Lemoynite

    Hide Locality List
    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.
    Canada
     
    • Québec
      • Montérégie
        • Rouville RCM
          • Mont Saint-Hilaire
    		Perrault G., Semenov E.I., Bikova A.V. and Capitonova T.A. (1969), La lemoynite, un nouveau silicate hydrate de zirconium et de sodium de St.-Hilaire, Quebec. Canadian Mineralogist: 9: 585-596; McDonald, A.M. (1997), Lemoynite and lemoynite-like minerals from Mont Saint-Hilaire, Quebec. Rochester Mineralogical Symposium: 187-188.
      • Verchères Co.
        • Varennes & St-Amable
          • Saint-Amable sill
    USA
     
    • New Mexico
      • Otero Co.
        • Cornudas Mountains
    Mineral and/or Locality
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 9th Oct 2009 02:29:16