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Lovdarite

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Yubileinaya (Yubileinoye; Jubilejnaja) pegmatite, Karnasurt Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
© Knut Eldjarn

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Formula:
(Na,K,Ca)
 
4
(Be,Al)
 
2
Si
 
6
O
 
16
·4H
 
2
O
System:OrthorhombicColour:Translucent, white, ...
Hardness:5 - 6
This page provides mineralogical data about Lovdarite.

Classification of Lovdarite

IMA status:Approved
Strunz 8th edition ID:8/J.17-10
Nickel-Strunz 10th (pending) edition ID:9.GF.15

9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
F : Other Rare Zeolites
Dana 8th edition ID:78.6.2.1

78 : Unclassified Silicates
6 :
Hey's CIM Ref.:16.6.6

16 : Silicates Containing Aluminum and other Metals
6 : Aluminosilicates of Be
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Type Occurrence of Lovdarite

Type Locality:Yubileinaya (Yubileinoye; Jubilejnaja) pegmatite, Karnasurt Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
Year of Discovery:1973

Physical Properties of Lovdarite

Colour:Translucent, white, yellowish.
Hardness (Mohs):5 - 6

Crystallography of Lovdarite

Crystal System:Orthorhombic
Cell Parameters:a = 39.57Å, b = 6.93Å, c = 7.15Å
Ratio:a:b:c = 5.71 : 1 : 1.032
Unit Cell Volume:V 1,960.67 ų (Calculated from Unit Cell)

Optical Data of Lovdarite

Type:Biaxial (+)
RI values: nα = 1.513 nβ = 1.516 nγ = 1.518
2V:Measured: 90° , Calculated: 78°
Maximum Birefringence:δ = 0.005

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

Chemical Properties of Lovdarite

Formula:
(Na,K,Ca)
 
4
(Be,Al)
 
2
Si
 
6
O
 
16
·4H
 
2
O
Essential elements:Be, H, Na, O, Si
All elements listed in formula:Al, Be, Ca, H, K, Na, O, Si
Common Impurities:Ti,Al,Fe,Mn,Mg,Ca,Ba,F,P

Relationship of Lovdarite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.GF.05Terranovaite
(Na,Ca)
 
8
(Si
 
68
Al
 
12
)O
 
160
·29H
 
2
O
9.GF.10Gottardiite
Na
 
3
Mg
 
3
Ca
 
5
Al
 
19
Si
 
117
O
 
272
·93H
 
2
O
9.GF.20Gaultite
Na
 
4
Zn
 
2
Si
 
7
O
 
18
·5H
 
2
O
9.GF.25Chiavennite
CaMnBe
 
2
Si
 
5
O
 
13
(OH)
 
2
·2H
 
2
O
9.GF.30Tschernichite
(Ca,Na
 
2
)[Al
 
2
Si
 
4
O
 
12
] · 4-8H
 
2
O
9.GF.35Mutinaite
Na
 
3
Ca
 
4
Si
 
85
Al
 
11
O
 
192
·60H
 
2
O
9.GF.40Tschörtnerite
Ca
 
4
(Ca,Sr,K,Ba)
 
3
Cu
 
3
[(OH)
 
2
|Al
 
3
Si
 
3
O
 
12
]
 
4
 · nH
 
2
O
9.GF.50Thornasite
(Na,K)Th,Si
 
11
(O,OH,F,Cl)
 
25
·8H
 
2
O
9.GF.55Direnzoite
NaK
 
6
MgCa
 
2
(Al
 
13
Si
 
47
O
 
120
)·36H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
16.6.1Beryl
Be
 
3
Al
 
2
Si
 
6
O
 
18
16.6.2Euclase
BeAl[OH|SiO
 
4
]
16.6.3Bavenite
Ca
 
4
Be
 
2
Al
 
2
Si
 
9
O
 
26
(OH)
 
2
16.6.4Aminoffite
Ca
 
2
(Be,Al)Si
 
2
O
 
7
(OH)·H
 
2
O
16.6.5Milarite
K
 
2
Ca
 
4
Al
 
2
Be
 
4
Si
 
24
O
 
60
·H
 
2
O
16.6.7Surinamite
(Mg,Fe)
 
3
Al
 
4
BeSi
 
3
O
 
16
16.6.8Ferrotaaffeite-6N'3S
(Be,Zn,Mg)FeAl
 
4
O
 
8

Other Names for Lovdarite

Other Languages:
German:Lovdarit
Russian:Ловдарит
Spanish:Lovdarita

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 Lovdarite

Reference List:Merlino S.(1990): Lovdarite: structural features and OD character. European Journal of Mineralogy: 2: 809-817.

Internet Links for Lovdarite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Lovdarite in the Natural History Museum (London) online catalogue
  • Lovdarite details from Handbook of Mineralogy (PDF)
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    Localities for Lovdarite

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