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Lovdarite

A valid IMA mineral species
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About LovdariteHide

Formula:
K2Na6Be4Si14O36 · 9H2O
Colour:
Colorless, white, yellowish
Lustre:
Vitreous
Hardness:
5 - 6
Specific Gravity:
2.33
Crystal System:
Orthorhombic
Member of:
Name:
Named by Y.P. Men'shikov, A.P. Denisov, Y.I. Uspenskaya, and E.A. Lipatova in 1973. The name derives from the Russian 'dar Lovozera', meaning 'a gift from Lovozero', Lovozero being the type locality.
This page provides mineralogical data about Lovdarite.


Unique IdentifiersHide

Mindat ID:
2443
Long-form identifier:
mindat:1:1:2443:9
GUID
(UUID V4):
b4b2b6c8-c9df-4065-8406-a6b2fd588a89

IMA Classification of LovdariteHide

Classification of LovdariteHide

9.GF.15

9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
F : Other Rare Zeolites
78.6.2.1

78 : Unclassified Silicates
6 :
16.6.6

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

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
LovIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of LovdariteHide

Vitreous
Transparency:
Transparent
Colour:
Colorless, white, yellowish
Streak:
White
Hardness:
5 - 6 on Mohs scale
Tenacity:
Brittle
Cleavage:
Distinct/Good
Distinct along (100), (010) and (001) and weak along (110).
Density:
2.33 g/cm3 (Measured)    

Optical Data of LovdariteHide

Type:
Biaxial (+)
RI values:
nα = 1.513 nβ = 1.516 nγ = 1.518
2V:
Measured: 90° , Calculated: 78°
Max Birefringence:
δ = 0.005
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
strong
Optical Extinction:
X = a; Y = b; Z = c.

Chemistry of LovdariteHide

Mindat Formula:
K2Na6Be4Si14O36 · 9H2O
Common Impurities:
Ti,Al,Fe,Mn,Mg,Ca,Ba,F,P

Crystallography of LovdariteHide

Crystal System:
Orthorhombic
Class (H-M):
mm2 - Pyramidal
Cell Parameters:
a = 39.576(1) Å, b = 6.9308(2) Å, c = 7.1526(3) Å
Ratio:
a:b:c = 5.71 : 1 : 1.032
Unit Cell V:
1,961.91 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Prismatic crystals.
Comment:
Space group Pma2. Distinct domains and various degrees of structural disorder are present (Merlino 1990).

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0006403LovdariteMerlino S (1990) Lovdarite, K4Na12(Be8Si28O72).18H2O, a zeolite-like mineral: structural features and OD character European Journal of Mineralogy 2 809-81719900293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
6.56 Å(60)
4.96 Å(90)
3.29 Å(100)
3.14 Å(100)
2.447 Å(60)
2.288 Å(60)
1.785 Å(50)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 4b: Highly evolved igneous rocks>3.0
35 : Ultra-alkali and agpaitic igneous rocks

Type Occurrence of LovdariteHide

General Appearance of Type Material:
Massive rims, with a thickness of 1-2 cm, on chkalovite grains and crystals. Aggregates are porcelanous or have a fibrous-radial structure. Also as druses of prismatic crystals 1-2 mm long.
Place of Conservation of Type Material:
National School of Mines, Paris, France.
Geology Museum, Kola Branch, Academy of Sciences, Apatity, Russia, 3208.
A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia.
Geological Setting of Type Material:
Alkaline pegmatite. A late stage hydrothermal mineral, originating after natrolite and replacing chkalovite.
Associated Minerals at Type Locality:
Reference:
Men'shikov, Y.P., Denisov, A.P., Uspenskaya, Y.I., Lipatova, E.A. (1973) Lovdarite, a new hydrous alkali-beryllium silicate. Doklady Akademii Nauk SSSR: 213: 130-133.

Other Language Names for LovdariteHide

German:Lovdarit
Simplified Chinese:铍硅钠石
Spanish:Lovdarita
Traditional Chinese:鈹矽鈉石

Relationship of Lovdarite to other SpeciesHide

Member of:
Other Members of this group:
AlflarseniteNaCa2Be3Si4O13(OH) · 2H2OMon. 2 : P21
AmiciteK2Na2Al4Si4O16 · 5H2OMon. 2
Ammonioleucite(NH4)(AlSi2O6)Tet. 4/m : I41/a
AnalcimeNa(AlSi2O6) · H2OTric. 1 : P1
Bellbergite(K,Ba,Sr)2Sr2Ca2(Ca,Na)4[Al3Si3O12]6 · 30H2OHex.
BikitaiteLiAlSi2O6 · H2OTric. 1 : P1
BoggsiteCa8Na3(Si,Al)96O192 · 70H2OOrth. mmm (2/m 2/m 2/m) : Imma
Brewsterite SubgroupZeolite Group.
Chabazite-Levyne SubgroupM[Al2Si4O12] · 6H2O
ChiavenniteCaMnBe2Si5O13(OH)2 · 2H2OMon. 2/m : P21/b
Clinoptilolite SubgroupM3-6(Si30Al6)O72 · 20H2O
CowlesiteCaAl2Si3O10 · 6H2OOrth. mmm (2/m 2/m 2/m)
Dachiardite SubgroupZeolite Group.
DirenzoiteNaK6MgCa2(Al13Si47O120) · 36H2OOrth. mmm (2/m 2/m 2/m) : Pmmn
EdingtoniteBa[Al2Si3O10] · 4H2OOrth. 2 2 2 : P21 21 21
EpistilbiteCaAl2Si6O16 · 5H2OMon.
Erionite SubgroupM2[Al4Si14O36] · 15H2O
Faujasite SubgroupM3.5[Al7Si17O48] · 32H2O
Ferrierite SubgroupZeolite Group.
FerrochiavenniteCa1-2Fe[(Si,Al,Be)5Be2O13(OH)2] · 2H2OMon. 2/m : P21/b
Flörkeite(K3Ca2Na)[Al8Si8O32] · 12H2OTric. 1 : P1
Garronite Subgroup
GaultiteNa4Zn2Si7O18 · 5H2OOrth. mm2 : Fdd2
Gismondine SubgroupZeolite Group.
Gmelinite SubgroupIn 1997, gmelinite was split into Gmelinite-Ca, Gmelinite-Na and Gmelinite-K.
GobbinsiteNa5(Si11Al5)O32 · 11H2OOrth. mmm (2/m 2/m 2/m) : Pnma
GoosecreekiteCa[Al2Si6O16] · 5H2OMon. 2 : P21
GottardiiteNa3Mg3Ca5Al19Si117O272 · 93H2OOrth. mmm (2/m 2/m 2/m) : Cmca
Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
HsianghualiteCa3Li2(Be3Si3O12)F2Iso. 4 3 2 : I41 3 2
KirchhoffiteCs(BSi2O6)Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
LaumontiteCaAl2Si4O12 · 4H2OMon. 2/m : B2/m
Loomisite Ba[Be2P2O8] · H2OMon. m
MaricopaitePb7Ca2(Si,Al)48O100 · 32H2OOrth.
MartinandresiteBa2(Al4Si12O32) · 10H2OOrth. mmm (2/m 2/m 2/m) : Pmmn
Mazzite SubgroupZeolite Group.
Merlinoite(K,Na)5(Ca,Ba)2Al9Si23O64 · 23H2OOrth. mmm (2/m 2/m 2/m) : Immm
Montesommaite(K,Na)9Al9Si23O64 · 10H2OOrth. mm2 : Fdd2
Mordenite(Na2,Ca,K2)4(Al8Si40)O96 · 28H2OOrth.
MutinaiteNa3Ca4Si85Al11O192 · 60H2OOrth. mmm (2/m 2/m 2/m) : Pnma
NabesiteNa2BeSi4O10 · 4H2OOrth. 2 2 2 : P21 21 21
Natrolite SubgroupA subgroup of the Zeolite Group.
OffretiteKCaMg(Si13Al5)O36 · 15H2OHex. 6 m2 : P6m2
PahasapaiteLi8(Ca,Li,K)10.5Be24(PO4)24 · 38H2OIso. 2 3 : I2 3
ParthéiteCa2(Si4Al4) O15 (OH)2 · 4H2OMon. 2/m : B2/b
Paulingite SubgroupPaulingite was originally described in 1960.
PerlialiteK9Na(Ca,Sr)[Al2Si4O12]6 · 15H2OHex. 6/mmm (6/m 2/m 2/m) : P6/mmm
Phillipsite SubgroupZeolite Group.
Pollucite(Cs,Na)2(Al2Si4O12) · 2H2OIso. m3m (4/m 3 2/m) : Ia3d
RoggianiteCa2Be(OH)2Al2Si4O13 · 2.5H2OTet. 4/mmm (4/m 2/m 2/m) : I4/mcm
Stilbite SubgroupM6-7[Al8-9Si27-28O72] · nH2O
Terranovaite(Na,Ca)8(Si68Al12)O160 · 29H2OOrth.
Thomsonite SubgroupThe large majority of "thomsonite" is thomsonite-Ca.
Tschernichite(Ca,Na2)[Al2Si4O12] · 4-8H2OTet. 4/mmm (4/m 2/m 2/m) : P4/mmm
TschörtneriteCa4(Ca,Sr,K,Ba)3Cu3[Al3Si3O12]4(OH)8 · nH2OIso. m3m (4/m 3 2/m) : Fm3m
UM1996-38-SiO:AlCaHNaNa-Ca-Al-Si-O-H
UM1999-33-SiO:AlHKNaK7Na5Al12Si20O64 · 24H2O
UM2002-40-SiO:AlCaHKMgNa(Mg,Ca,Na,K)7.5(Al12.8Si51.2)O128 · 65H2OTet. 4 2 2 : P41 2 2
Unnamed (Ca analogue of Merlinoite)(Ca,K,Na)5(Ca,Ba)2Al9Si23O64 · 23H2O ?
WairakiteCa(Al2Si4O12) · 2H2OMon. 2/m : B2/m
WeinebeneiteCaBe3(PO4)2(OH)2 · 4H2OMon. m : Bb
Wenkite(Ba,K)4(Ca,Na)6[(Si,Al)20O39(OH)2](SO4)3 · 0.5H2OHex. 6 m2 : P62m
WillhendersoniteKCa[Al3Si3O12] · 5H2OTric. 1 : P1
YugawaraliteCaAl2Si6O16 · 4H2OMon. m : Pb

Common AssociatesHide

Associated Minerals Based on Photo Data:
2 photos of Lovdarite associated with ChkaloviteNa2BeSi2O6
1 photo of Lovdarite associated with AegirineNaFe3+Si2O6
1 photo of Lovdarite associated with AlbiteNa(AlSi3O8)
1 photo of Lovdarite associated with HydrocerussitePb3(CO3)2(OH)2

Related Minerals - Strunz-mindat GroupingHide

9.GF.05Terranovaite(Na,Ca)8(Si68Al12)O160 · 29H2OOrth.
9.GF.10GottardiiteNa3Mg3Ca5Al19Si117O272 · 93H2OOrth. mmm (2/m 2/m 2/m) : Cmca
9.GF.20GaultiteNa4Zn2Si7O18 · 5H2OOrth. mm2 : Fdd2
9.GF.25ChiavenniteCaMnBe2Si5O13(OH)2 · 2H2OMon. 2/m : P21/b
9.GF.25FerrochiavenniteCa1-2Fe[(Si,Al,Be)5Be2O13(OH)2] · 2H2OMon. 2/m : P21/b
9.GF.30Tschernichite(Ca,Na2)[Al2Si4O12] · 4-8H2OTet. 4/mmm (4/m 2/m 2/m) : P4/mmm
9.GF.35MutinaiteNa3Ca4Si85Al11O192 · 60H2OOrth. mmm (2/m 2/m 2/m) : Pnma
9.GF.40TschörtneriteCa4(Ca,Sr,K,Ba)3Cu3[Al3Si3O12]4(OH)8 · nH2OIso. m3m (4/m 3 2/m) : Fm3m
9.GF.50Thornasite(Na,K)12Th3[Si8O19]4 · 18H2OTrig. 3m : R3m
9.GF.55DirenzoiteNaK6MgCa2(Al13Si47O120) · 36H2OOrth. mmm (2/m 2/m 2/m) : Pmmn
9.GF.60MeieriteBa44Si66Al30O192Cl25(OH)33Iso. m3m (4/m 3 2/m) : Im3m
9.GF.65RongibbsitePb2(Si4Al)O11(OH) Mon. 2/m : B2/m

Other InformationHide

IR Spectrum:
The infrared spectrum indicates the presence of hydroxyl and H2O groups.
Thermal Behaviour:
When heated, it loses water steadily to about 400°; about 10%. After heating to 300°, water is resorbed at room temperature in about 2 hours.
The DTA curve shows a double endothermic effect at about 250° and endothermic effects at 390° and 640°.
Notes:
Readily melting in the blowpipe to a colorless glass.
Insoluble in 4% HCl, 6% HNO3, and 5% H2SO4, at 20 C.
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 LovdariteHide

References for LovdariteHide

Reference List:

Localities for LovdariteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - 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.
Greenland
 
  • Kujalleq
Petersen (2001)
Petersen et al. (2002) +1 other reference
Petersen et al. (2002)
Namibia
 
  • Khomas Region
    • Windhoek Rural
      • Aris
Blaß et al. (2016) +1 other reference
Russia (TL)
 
  • Murmansk Oblast
    • Lovozersky District
      • Karnasurt Mountain
Men'shikov et al. (1973) +1 other reference
Spain
 
  • Canary Islands
    • Santa Cruz de Tenerife Province
      • Tenerife
Dill et al. (2023)
USA
 
  • New Mexico
    • Colfax County
      • Springer
        • Point of Rocks Mesa (Pecks Mesa)
DeMark (1984) +2 other references
 
矿物 and/or 产地  
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