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Uklonskovite

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About UklonskoviteHide

Formula:
NaMg(SO4)F · 2H2O
NOTE: Structure solution of an Italian sample gave the formula NaMg(SO4)F.2H2O (Sabelli, 1985). This formula is now accepted as the correct one (IMA 16-J proposal, accepted). A reinvestigatgion of the type material confirmed the formula (Menchetti et al., 2017).
Colour:
Colourless
Lustre:
Vitreous
Crystal System:
Monoclinic
Name:
Named after Alexandr Sergeievich Uklonskii (1888-1972), mineralogist, Academy of Sciences, Uzbekistan.
Maybe a product of supergene alteration of kononovite.


Classification of UklonskoviteHide

Approved
Approval History:
2016: IMA 16-J: formula revised from NaMg(SO4)OH·2H2O to NaMg(SO4)F·2H2O (F instead of OH).
7.DF.05

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
F : With large and medium-sized cations
31.7.2.1

31 : HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
7 : (AB)2(XO4)Zq·xH2O
25.3.12

25 : Sulphates
3 : Sulphates of Mg

Physical Properties of UklonskoviteHide

Vitreous
Transparency:
Transparent
Colour:
Colourless

Optical Data of UklonskoviteHide

Type:
Biaxial (+)
RI values:
nα = 1.476 nγ = 1.500
Max Birefringence:
δ = 0.024
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r < v moderate

Chemical Properties of UklonskoviteHide

Formula:
NaMg(SO4)F · 2H2O

NOTE: Structure solution of an Italian sample gave the formula NaMg(SO4)F.2H2O (Sabelli, 1985). This formula is now accepted as the correct one (IMA 16-J proposal, accepted). A reinvestigatgion of the type material confirmed the formula (Menchetti et al., 2017).

Crystallography of UklonskoviteHide

Crystal System:
Monoclinic
Cell Parameters:
a = 7.2 Å, b = 7.21 Å, c = 5.73 Å
β = 113.23°
Ratio:
a:b:c = 0.999 : 1 : 0.795
Unit Cell V:
273.34 ų (Calculated from Unit Cell)

Type Occurrence of UklonskoviteHide

Other Language Names for UklonskoviteHide

Simplified Chinese:羟钠镁矾
Spanish:Uklonskovita
Traditional Chinese:羥鈉鎂礬

Common AssociatesHide

Associated Minerals Based on Photo Data:
Challacolloite4 photos of Uklonskovite associated with Challacolloite on mindat.org.
Pseudoboleite3 photos of Uklonskovite associated with Pseudoboleite on mindat.org.
Nitratine2 photos of Uklonskovite associated with Nitratine on mindat.org.
Cotunnite1 photo of Uklonskovite associated with Cotunnite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

7.DF.Aldridgeite(Cd,Ca)(Cu,Zn)4(SO4)2(OH)6 · 3H2O Mon. 2/m : B2/b
7.DF.AlcaparrosaiteK3Ti4+Fe3+(SO4)4O(H2O)2Mon. 2/m : B2/b
7.DF.10KainiteKMg(SO4)Cl · 3H2OMon. 2/m : B2/m
7.DF.15NatrochalciteNaCu2(SO4)2(OH) · 2H2OMon. 2/m : B2/m
7.DF.20MetasideronatriteNa2Fe(SO4)2(OH) · H2OOrth. mmm (2/m 2/m 2/m)
7.DF.20SideronatriteNa2Fe(SO4)2(OH) · 3H2OOrth. 2 2 2 : P21 21 21
7.DF.25DespujolsiteCa3Mn4+(SO4)2(OH)6 · 3H2OHex. 6 m2 : P62c
7.DF.25FleischeritePb3Ge(SO4)2(OH)6 · 3H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
7.DF.25SchaurteiteCa3Ge(SO4)2(OH)6 · 4H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
7.DF.25MallestigitePb3Sb5+(SO4)(AsO4)(OH)6 · 3H2OHex. 6 : P63
7.DF.30Slavíkite(H3O+)3Mg6Fe15(SO4)21(OH)18 · 98H2OTrig. 3 : R3
7.DF.35MetavoltineNa6K2FeFe6(SO4)12O2 · 18H2OTrig.
7.DF.40LannoniteMg2Ca4Al4(SO4)8F8 · 24H2O Tet. 4/m : I4/m
7.DF.40VlodavetsiteAlCa2(SO4)2F2Cl · 4H2OTet. 4/m : I4/m
7.DF.45PeretaiteCa(SbO)4(SO4)2(OH)2 · 2H2OMon. 2/m : B2/b
7.DF.50GordaiteNaZn4(SO4)(OH)6Cl · 6H2OTrig. 3 : P3
7.DF.55Clairite(NH4)2Fe3(SO4)4(OH)3 · 3H2OTric.
7.DF.60ArzruniteCu4Pb2(SO4)(OH)4Cl6 · 2H2O (?)Orth.
7.DF.65ElyitePb4Cu(SO4)O2(OH)4 · H2OMon. 2/m
7.DF.70YecoraiteFe3+3Bi5(Te6+O4)2(Te4+O3)O9 · 9H2O
7.DF.75RiomarinaiteBi(SO4)(OH) · H2OMon. 2/m
7.DF.80DukeiteBi3+24Cr6+8O57(OH)6 · 3H2OTrig. 3m : P3 1c
7.DF.85XocolatliteCa2Mn4+2(Te6+O6)2 · H2OMon. 2/m : P2/m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

25.3.1KieseriteMgSO4 · H2OMon. 2/m
25.3.2SanderiteMgSO4 · 2H2OOrth. 2 2 2 : P21 21 21
25.3.3StarkeyiteMgSO4 · 4H2OMon. 2/m : P21/b
25.3.4PentahydriteMgSO4 · 5H2OTric.
25.3.5HexahydriteMgSO4 · 6H2OMon. 2/m : P2/m
25.3.6EpsomiteMgSO4 · 7H2OOrth. 2 2 2 : P21 21 21
25.3.7CaminiteMg7(SO4)5(OH)4 · H2OTet.
25.3.8VanthoffiteNa6Mg(SO4)4Mon. 2/m : P21/b
25.3.9BlöditeNa2Mg(SO4)2 · 4H2OMon. 2/m
25.3.10KonyaiteNa2Mg(SO4)2 · 5H2OMon. 2/m : P21/b
25.3.11LöweiteNa12Mg7(SO4)13 · 15H2OTrig.
25.3.13LangbeiniteK2Mg2(SO4)3Iso. 2 3 : P21 3
25.3.14LeoniteK2Mg(SO4)2 · 4H2OMon. 2/m
25.3.15PicromeriteK2Mg(SO4)2 · 6H2OMon. 2/m
25.3.16Efremovite(NH4)2Mg2(SO4)3Iso.
25.3.17Boussingaultite(NH4)2Mg(SO4)2 · 6H2OMon. 2/m : P21/b
25.3.18PickeringiteMgAl2(SO4)4 · 22H2OMon. 2/m : P21/b

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.

References for UklonskoviteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Doklady Akademii Nauk SSSR (1964): 158: 116-118.
Doklady Akademii Nauk SSSR (1964): 158: 1093.
American Mineralogist (1965): 50: 520.
Bulletin de la Société française de Minéralogie et de Cristallographie (1985): 108: 133-138.
CNMNC Newsletter No. 34, December 2016 (proposal IMA 16-J).
Menchetti, S.; Bindi, L.; Belakovskiy, D.; Zaccarini, F. (2017): Structural, chemical and spectroscopic re-examination of type uklonskovite leads to its redefinition. Mineralogical Magazine (in press).

Internet Links for UklonskoviteHide

Localities for UklonskoviteHide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Chile
 
  • Tarapacá Region
    • El Tamarugal Province
      • Challacollo
Associated to challacolloite in M.E. Ciriotti collection (2005); Schluter, J., Pohl, D., & Britvin, S. (2005). The new mineral challacolloite, KPb2Cl5, the natural occurrence of a technically known laser material. Neues Jahrbuch für Mineralogie-Abhandlungen, 182(1), 95-101.
China
 
  • Qinghai Province
    • Haixi Autonomous Prefecture
      • Da Qaidam Co. (Dachaidan Co.)
Keqin Cai and Ziqiang Qian (1982): Acta Mineralogica Sinica 2(4), 290-295; Shaoxiu Yang (1991): Journal of Lake Sciences 3(1), 1-10
Greece
 
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium; Lavreotiki Municipality)
      • Lavrion District Mines
        • Plaka
          • Plaka Mines
Möckel, S. (2000): Strashimirit und 11 weitere Neubestimmungen aus Lavrion (GR). Lapis 25 (7-8), 74.
Branko Rieck Collection
Italy
 
  • Tuscany
    • Siena Province
      • Chiusdino
Brizzi G., Ciselli I, Santucci A. (1986) - Ultime novità da le Cetine di Cotorniano - Riv. Miner. Ital., Milano, fasc. 3, pp.145-155; Menchetti, S., Batoni, M., Batacchi, C., Borselli, G., Brogi, A., Ceccantini, L., Fassina, B., Marchesini, M., Rossellini, A. & Ruggieri, G. (2015): Le Cetine di Cotorniano. Miniera e minerali. Associazione Micro-Mineralogica Italiana, Cremona, 354 p.
UK
 
  • England
    • North Yorkshire
      • Scarborough
Smith, F.W., Dearlove, J.P.L., Kemp, S.J., Bell, C.P., Milne, C.J. and Pottas, T.L. (2014) Potash – Recent exploration developments in North Yorkshire. Pp. 45-50 in Hunger, E., Brown, T. J. and Lucas, G. (Eds.) Proceedings of the 17th Extractive Industry Geology Conference, EIG Conferences Ltd. 202pp
Uzbekistan (TL)
 
  • Karakalpakstan Respublikasi (Qaraqalpog'iston)
    • Lower Amu Darya River (Amydar'ya)
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Mineral and/or Locality  
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