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Alsakharovite-Zn

A valid IMA mineral species
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About Alsakharovite-ZnHide

Formula:
NaSrKZn(Ti,Nb)4(Si4O12)2(O,OH)4 · 7H2O
Colour:
White, light brown, colourless
Lustre:
Vitreous
Hardness:
5
Specific Gravity:
2.9
Crystal System:
Monoclinic
Name:
Named in honor of Aleksey Sergeyevich Sakharov (Алексей Сергеевич Сахаров) (18 March 1910 - 16 February 1996, Russia), geologist at the Kola Branch of the USSR Academy of Sciences, who worked on the Lovozero massif. The suffix denotes the dominant extra-framework cation, following the IMA recommended nomeclature for labuntsovite-group minerals.
Gutkovaite structural type.


Unique IdentifiersHide

Mindat ID:
26417
Long-form identifier:
mindat:1:1:26417:2
GUID
(UUID V4):
f124185a-0f67-4edc-b20e-453474a7c475

IMA Classification of Alsakharovite-ZnHide

Classification of Alsakharovite-ZnHide

9.CE.30h

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

Physical Properties of Alsakharovite-ZnHide

Vitreous
Transparency:
Transparent, Translucent
Colour:
White, light brown, colourless
Streak:
White
Hardness:
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
2.9 g/cm3 (Measured)    2.94 g/cm3 (Calculated)

Optical Data of Alsakharovite-ZnHide

Type:
Biaxial (+)
RI values:
nα = 1.680(1) nβ = 1.687(2) nγ = 1.787(5)
2V:
Measured: 25° (10), Calculated: 31°
Max Birefringence:
δ = 0.107
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
None
Optical Extinction:
Y = b.
Pleochroism:
Non-pleochroic

Chemistry of Alsakharovite-ZnHide

Mindat Formula:
NaSrKZn(Ti,Nb)4(Si4O12)2(O,OH)4 · 7H2O

Crystallography of Alsakharovite-ZnHide

Crystal System:
Monoclinic
Class (H-M):
m - Domatic
Space Group:
Bm
Setting:
Cm
Cell Parameters:
a = 14.495 Å, b = 13.945 Å, c = 7.838 Å
β = 117.75°
Ratio:
a:b:c = 1.039 : 1 : 0.562
Unit Cell V:
1402 ų
Z:
2
Morphology:
Flattened prismatic crystals elongated along [010].
Twinning:
Microtwinned on (001) and (401).

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0018493Alsakharovite-ZnRozenberg K A, Rastsvetaeva R K, Pekov I V, Chukanov N V (2002) New Zn-rich representative of the labuntsovite group: crystal structure and microtwinning Doklady Chemistry 383 110-1132002Lovozero alkaline massif, Kola Peninsula, Russia0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
6.96 Å(100)
3.11 Å(90)
3.21 Å(80)
2.50 Å(40)
1.70 Å(40)
2.60 Å(35)
1.74 Å(30)

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 Alsakharovite-ZnHide

General Appearance of Type Material:
Coarse, flattened-prismatic crystals up to 8 x 2 x 0.5 mm.
Place of Conservation of Type Material:
Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow, Russia.
Geological Setting of Type Material:
Hydrothermal mineral found in cavities of eudialyte-aegirine-feldspar pegmatite in an alkaline massif.
Associated Minerals at Type Locality:
Reference:
Pekov, I.V., N.V. Chukanov, A.E. Zadov, K.A. Rozenberg, R.K. Rastsvetaeva (2003) Alsakharovite-Zn, NaSrKZn(Ti,Nb)4(Si4O12)2(O,OH)4·7 H2O, a new mineral of the labuntsovite group from Lovozero massif, Kola Peninsula: Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva (and Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva): 132(1): 52-58.

Synonyms of Alsakharovite-ZnHide

Other Language Names for Alsakharovite-ZnHide

Relationship of Alsakharovite-Zn to other SpeciesHide

Other Members of this group:
Gutkovaite-MnK2CaMn(Ti,Nb)4(Si4O12)2(O,OH)4 · 5H2OMon. m : Bm
Neskevaaraite-FeK3Na2Fe2+(Ti,Nb)4(Si4O12)2(O,OH)4 · 5-6 H2OMon. m : Bm

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.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.30fParalabuntsovite-MgNa8K8Mg4Ti16(Si4O12)8(OH,O)16 · 20-24H2OMon. 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 Alsakharovite-ZnHide

References for Alsakharovite-ZnHide

Localities for Alsakharovite-ZnHide

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.
Russia (TL)
 
  • Murmansk Oblast
    • Lovozersky District
      • Seidozero Lake
Pekov et al. (2003) +1 other reference
Pekov et al. (2004)
 
Mineral and/or Locality  
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