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Paralabuntsovite-Mg

A valid IMA mineral species
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09773520015714868841560.jpg
Paralabuntsovite-Mg

Westvaco mine, Green River Basin, Sweetwater County, Wyoming, USA
08895730017046791389119.jpg
Paralabuntsovite-Mg, etc.

Westvaco mine, Green River Basin, Sweetwater County, Wyoming, USA
03195690015714227047302.jpg
Paralabuntsovite-Mg

Westvaco mine, Green River Basin, Sweetwater County, Wyoming, USA
08895730017046791389119.jpg
Paralabuntsovite-Mg, etc.

Westvaco mine, Green River Basin, Sweetwater County, Wyoming, USA
06941630015714868851016.jpg
Paralabuntsovite-Mg

Westvaco mine, Green River Basin, Sweetwater County, Wyoming, USA
08895730017046791389119.jpg
Paralabuntsovite-Mg, etc.

Westvaco mine, Green River Basin, Sweetwater County, Wyoming, USA
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About Paralabuntsovite-MgHide

Formula:
Na8K8Mg4Ti16(Si4O12)8(OH,O)16 · 20-24H2O
Colour:
Pale yellow, brownish yellow
Lustre:
Vitreous
Hardness:
6
Specific Gravity:
4.81 (Calculated)
Crystal System:
Monoclinic
Name:
Named in 2002 during a nomenclature review of labuntsovite-(super)group minerals, for its relationship to labuntsovite. The 'para' prefix indicates a different space group and doubling of the unit cell. The modifier/suffix indicates the extra-framework cation, in this case magnesium.
This page provides mineralogical data about Paralabuntsovite-Mg.


Unique IdentifiersHide

Mindat ID:
27561
Long-form identifier:
mindat:1:1:27561:9
GUID
(UUID V4):
6bd2c95b-e7c0-48f8-a503-7d2d4cd9c7ad

IMA Classification of Paralabuntsovite-MgHide

IMA status:
Approved
Approval year:
2000
First published:
2002
Approval history:
Approved IMA00-A: Chukanov et al. (2002); Grice and Ferraris (2003).

Classification of Paralabuntsovite-MgHide

Strunz-mindat (2024):
9.CE.30f

9 : SILICATES (Germanates)
C : Cyclosilicates
E : [Si4O12]8- 4-membered single rings (vierer-Einfachringe), without insular complex anions

Mineral SymbolsHide

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

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

Physical Properties of Paralabuntsovite-MgHide

Lustre:
Vitreous
Transparency:
Transparent, Translucent
Colour:
Pale yellow, brownish yellow
Hardness:
6 on Mohs scale
Cleavage:
Perfect
{102}
Density:
4.81 g/cm3 (Calculated)

Optical Data of Paralabuntsovite-MgHide

Type:
Biaxial (+)
RI values:
nα = 1.695 nβ = 1.698 nγ = 1.825
2V:
Measured: 20°
Max Birefringence:
δ = 0.130
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Optical Extinction:
Y = b; optic plane ∥ (010).
Comments:
Elongation b.

Chemistry of Paralabuntsovite-MgHide

Mindat Formula:
Na8K8Mg4Ti16(Si4O12)8(OH,O)16 · 20-24H2O
Elements listed:
H, K, Mg, Na, O, Si, Ti - search for minerals with similar chemistry

Crystallography of Paralabuntsovite-MgHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 15.6 Å, b = 13.8 Å, c = 7.8 Å
β = 117°
Ratio:
a:b:c = 1.13 : 1 : 0.565
Unit Cell V:
1,496.16 ų (Calculated from Unit Cell)
Morphology:
Forms observed include {001}, {010}, {100}, and {101}.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.18 Å(100)
6.94 Å(71)
2.59 Å(71)
6.36 Å(50)
3.10 Å(50)
3.08 Å(50)
3.02 Å(50)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Near-surface Processes
24 : Authigenic minerals in terrestrial sediments (see also #17)

Type Occurrence of Paralabuntsovite-MgHide

Type Locality:
ⓘ Westvaco mine, Green River Basin, Sweetwater County, Wyoming, USA
General Appearance of Type Material:
Authigenic pale-yellow to brownish yellow crystals, 1-2 mm in length.
Place of Conservation of Type Material:
No designated type specimen.
Geological Setting of Type Material:
Green River formation unmetamorphosed sediments. Both in shale and in trona overlying the shale.
Associated Minerals at Type Locality:
WitheriteTronaShortiteSearlesiteLoughlinite
LeucospheniteDolomiteCalciteBradleyiteBarytocalcite

Synonyms of Paralabuntsovite-MgHide

Relationship of Paralabuntsovite-Mg to other SpeciesHide

Related Minerals - Strunz-mindat GroupingHide

9.CE.Dutkevichite-(Ce)NaZnBa2Ce2Ti2Si8O26F · H2OOrth. mm2 : Ama2
9.CE.NiobobaotiteBa4(Ti2.5Fe2+1.5)Nb4Si4O28ClTet. 4/m : I41/a
9.CE.05PapagoiteCaCu[H3AlSi2O9]Mon. 2/m : B2/m
9.CE.10VerplanckiteBa4Mn2+2Si4O12(OH,H2O)3Cl3Hex. 6/mmm (6/m 2/m 2/m) : P6/mmm
9.CE.15BaotiteBa4(Ti,Nb,W)8O16(SiO3)4ClTet. 4/m : I41/a
9.CE.20NagashimaliteBa4(V,Ti)4B2Si8O27(O,OH)2ClOrth. mmm (2/m 2/m 2/m) : Pmmn
9.CE.20TaramelliteBa4(Fe3+,Ti,Fe2+,Mg)4(B2Si8O27)O2ClxOrth. mmm (2/m 2/m 2/m) : Pmmn
9.CE.20TitantaramelliteBa4(Ti,Fe3+,Fe2+,Mg)4(B2Si8O27)O2ClxOrth. mmm (2/m 2/m 2/m)
9.CE.25Bario-orthojoaquinite(Ba,Sr)4Fe2Ti2[Si4O12]2O2 · H2OOrth.
9.CE.25Byelorussite-(Ce)NaBa2Ce2MnTi2[Si4O12]2O2(F,OH) · H2OOrth. mm2 : Ama2
9.CE.25Joaquinite-(Ce)NaBa2Ce2FeTi2[Si4O12]2O2(OH,F) · H2OMon. 2 : B2
9.CE.25Orthojoaquinite-(Ce)NaBa2Ce2FeTi2[Si4O12]2O2(O,OH) · H2OOrth.
9.CE.25StrontiojoaquiniteSr2Ba2(Na,Fe)2Ti2[Si4O12]2O2(O,OH)2 · H2OMon.
9.CE.25Strontio-orthojoaquinite(Na,Fe)2Sr2Ba2Ti2[Si4O12]2O2(O,OH)2 · H2OOrth.
9.CE.25Orthojoaquinite-(La)NaBa2La2Fe2+Ti2[Si4O12]2O2(O,OH) · H2OOrth. mmm (2/m 2/m 2/m)
9.CE.30aUnnamed (Ca-Na-ordered analogue of Korobitsynite)(Ca,Na)2(Ti,Nb)2(Si4O12)(OH,O)2 · 3-4H2OOrth. 2 2 2 : P21 21 2
9.CE.30eLabuntsovite-MnNa4K4(Ba,K)2Mn2+(Ti,Nb)8(Si4O12)4(O,OH)8 · 10-12H2OMon. 2/m : B2/m
9.CE.30aNenadkevichite(Na,◻)8Nb4(Si4O12)2(O,OH)4 · 8H2OOrth. mmm (2/m 2/m 2/m) : Pbam
9.CE.30dLemmleinite-KK2(Ti,Nb)2(Si4O12)(OH,O)2 · 4H2OOrth.
9.CE.30aKorobitsyniteNa2(Ti,Nb)2(Si4O12)(OH,O)2 · 3-4H2OOrth. mmm (2/m 2/m 2/m) : Pbam
9.CE.30cKuzmenkoite-MnK2Mn2+(Ti,Nb)4(Si4O12)2(OH,O)4 · 5-6H2OMon. 2/m : B2/m
9.CE.30bVuoriyarvite-KK2(Nb,Ti)2(Si4O12)(O,OH)2 · 4H2OMon. m : Bm
9.CE.30bTsepinite-NaNa2(Ti,Nb)2(Si4O12)(OH,O)2 · 3H2OMon. m : Bm
9.CE.30cKarupmøllerite-Ca(Na,Ca,K)2Ca(Nb,Ti)4(Si4O12)2(O,OH)4 · 7H2OMon. 2/m : B2/m
9.CE.30eLabuntsovite-MgNa4K4(Ba,K)2Mg(Ti,Nb)8(Si4O12)4(O,OH)8 · 10H2OMon. 2/m : B2/m
9.CE.30eLabuntsovite-FeNa4K4(Ba,K)2Fe2+(Ti,Nb)8(Si4O12)4(O,OH)8 · 10H2OMon. 2/m : B2/m
9.CE.30dLemmleinite-BaNa2K2Ba(Ti,Nb)4(Si4O12)2(O,OH)4 · 5H2OMon. 2/m : B2/m
9.CE.30cGjerdingenite-FeK2Fe2+(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2OMon. 2/m : B2/m
9.CE.30hNeskevaaraite-FeK3Na2Fe2+(Ti,Nb)4(Si4O12)2(O,OH)4 · 5-6 H2OMon. m : Bm
9.CE.30bTsepinite-KK2(Ti,Nb)2(Si4O12)(OH,O)2 · 3H2OMon. m : Bm
9.CE.30bParatsepinite-BaBa4(Ti,Nb)8(Si4O12)4(OH,O)8 · 8H2OMon. 2/m : B2/m
9.CE.30bTsepinite-CaCa(Ti,Nb)2(Si4O12)(OH,O)2 · 3H2OMon. 2/m : B2/m
9.CE.30hAlsakharovite-ZnNaSrKZn(Ti,Nb)4(Si4O12)2(O,OH)4 · 7H2OMon. m : Bm
9.CE.30cGjerdingenite-MnK2Mn2+(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2OMon. 2/m : B2/m
9.CE.30cLepkhenelmite-Zn(Ba,K)2Zn(Ti,Nb)4(Si4O12)2(O,OH)4 · 7H2OMon. m : Bm
9.CE.30bTsepinite-SrSr(Ti,Nb)2(Si4O12)(OH,O)2 · 3H2OMon. m : Bm
9.CE.30bParatsepinite-Na(Na,Sr,K,Ca)7(Ti,Nb)8(Si4O12)4(O,OH)8 · nH2O n ~ 8Mon. 2/m : B2/m
9.CE.30cGjerdingenite-CaK2Ca(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2OMon. 2/m : B2/m
9.CE.30cGjerdingenite-NaK2Na(Nb,Ti)4(Si4O12)2(OH,O)4 · 5H2OMon. 2/m : B2/m
9.CE.30hGutkovaite-MnK2CaMn(Ti,Nb)4(Si4O12)2(O,OH)4 · 5H2OMon. m : Bm
9.CE.30cKuzmenkoite-ZnK2Zn(Ti,Nb)4(Si4O12)2(OH,O)4 · 6-8H2OMon. m : Bm
9.CE.30gOrganovaite-MnK2Mn(Nb,Ti)4(Si4O12)2(O,OH)4 · 5-7H2OMon. 2/m : B2/m
9.CE.30gOrganovaite-ZnK2Zn(Nb,Ti)4(Si4O12)2(O,OH)4 · 6H2OMon. 2/m : B2/m
9.CE.30gParakuzmenkoite-Fe(K,Ba)4Fe(Ti,Nb)8(Si4O12)4(O,OH)8 · 14H2OMon. 2/m : B2/m
9.CE.30cBurovaite-Ca(Na,K)4Ca2(Ti,Nb)8(Si4O12)4(OH,O)8 · 12H2OMon. 2/m : B2/m
9.CE.45Komarovite(Ca,Mn)(Nb,Ti)2[Si2O7](O,F)3 · 3.5H2OOrth. mmm (2/m 2/m 2/m) : Cmmm
9.CE.45Natrokomarovite(Na,Ca,H)2Nb2Si2O10(OH,F)2 · H2OOrth.

Other InformationHide

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 Paralabuntsovite-MgHide

References for Paralabuntsovite-MgHide

Localities for Paralabuntsovite-MgHide

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.
USA (TL)
 
  • Wyoming
    • Sweetwater County
      • Green River Basin
Milton, Ch., Mrose, M.E., Fahey, J.J., Chao, E.C.T. (1958). Labuntsovite from the Trona Mine, Sweetwater County, Wyoming. Bulletin of the Geological Society of America, 69, 1614–1621.
Chukanov, Nikita V., Pekov, Igor V., Khomyakov, Alexander P. (2002) Recommended nomenclature for labuntsovite-group minerals. European Journal of Mineralogy, 14 (1) 165-173 doi:10.1127/0935-1221/2002/0014-0165
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