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Umbozerite

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About UmbozeriteHide

Panorama of NE side of Khibiny massif, view from Lovozero massif

Khibiny Massif, Murmanskaya Oblast', Northern Region, Russia
Formula:
Na3Sr4Th[Si(O,OH)3-4]8
Colour:
bottle-green; rapidly changes to green-brown or brown
Lustre:
Vitreous
Hardness:
5
Crystal System:
Amorphous
Name:
For the type locality near Umbozero lake - the second in size lake of Kola peninsula.

Classification of UmbozeriteHide

Approved
Approval Year:
1973
9.HG.15

9 : SILICATES (Germanates)
H : Unclassified silicates
G : With REE, Th
78.7.17.1

78 : Unclassified Silicates
7 :
14.11.3

14 : Silicates not Containing Aluminum
11 : Silicates of Th and Hg

Physical Properties of UmbozeriteHide

Vitreous
Transparency:
Translucent
Colour:
bottle-green; rapidly changes to green-brown or brown
Hardness:
Hardness:
VHN100=506 - Vickers
Fracture:
Conchoidal

Optical Data of UmbozeriteHide

Type:
Isotropic
RI values:
n = 1.640
Birefringence:
Isotropic minerals have no birefringence
Surface Relief:
Moderate

Chemical Properties of UmbozeriteHide

Formula:
Na3Sr4Th[Si(O,OH)3-4]8
IMA Formula:
Na3Sr4ThSi8(O,OH)24
Common Impurities:
Ti,Ce,Fe,U,Mn,Ca,Ba,K

Crystallography of UmbozeriteHide

Crystal System:
Amorphous
Comment:
Heating yielded thorianite lines, with additional lines.

Type Occurrence of UmbozeriteHide

General Appearance of Type Material:
irregular masses and poorly formed tetragonal crystals up to 3 X I mm
Place of Conservation of Type Material:
Mineralogical Museum, Acad. Sci. USSR, and in the Institute of Mineralogy, Geochemistry, and Crystal Chemistry of Rare Elements, both in Moscow
Geological Setting of Type Material:
ussingite veinlets, cutting alkalic rocks of the upper part of the differentiated complex
Associated Minerals at Type Locality:

Synonyms of UmbozeriteHide

Other Language Names for UmbozeriteHide

German:Umbozerit
Spanish:Umbozerita

Common AssociatesHide

Associated Minerals Based on Photo Data:
Serandite21 photos of Umbozerite associated with Serandite on mindat.org.
Ussingite18 photos of Umbozerite associated with Ussingite on mindat.org.
Vuonnemite17 photos of Umbozerite associated with Vuonnemite on mindat.org.
Belovite-(Ce)9 photos of Umbozerite associated with Belovite-(Ce) on mindat.org.
Manganoneptunite8 photos of Umbozerite associated with Manganoneptunite on mindat.org.
Shkatulkalite8 photos of Umbozerite associated with Shkatulkalite on mindat.org.
Chkalovite7 photos of Umbozerite associated with Chkalovite on mindat.org.
Tugtupite4 photos of Umbozerite associated with Tugtupite on mindat.org.
Bykovaite3 photos of Umbozerite associated with Bykovaite on mindat.org.
Cleiophane3 photos of Umbozerite associated with Cleiophane on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.HG.20Rowlandite-(Y)(Y,Ce)4Fe2+(Si2O7)2F2 (?)Tric.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

14.11.1ThoriteTh(SiO4)Tet.
14.11.2HuttoniteThSiO4Mon.
14.11.4Thornasite(Na,K)12Th3[Si8O19]4 · 18H2OTrig. 3m : R3m
14.11.5Yttrialite-(Y)(Y,Th)2Si2O7
14.11.6Edgarbaileyite(Hg-Hg)3Si2O7Mon.

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 UmbozeriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Es'kova E M, Semenov E I, Khomyakov A P, Mer'kov A N, Lebedeva S I, Dubakina L S (1974) Umbozerite - a new mineral. Doklady Akademii Nauk SSSR 216, 169-171
American Mineralogist (1975): 60: 341.

Internet Links for UmbozeriteHide

Localities for UmbozeriteHide

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.
Russia
 
  • Northern Region
    • Murmanskaya Oblast'
      • Lovozero Massif
[World of Stones 95:5-6, p64]
[Clark, 1993 - "Hey's Mineral Index"]; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Pavel M. Kartashov data; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
          • Second Eastern Stream
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Ermolaeva, V.N., Pekov, I.V., Chukanov, N.V., Zadov, A.E. (2007): Geology of Ore Deposits 49(8), 758-775.
Mineral and/or Locality  
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