Umbozerite
A valid IMA mineral species
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About Umbozerite
Panorama of NE side of Khibiny massif, view from Lovozero massif
Khibiny Massif, Murmansk Oblast, Russia
Khibiny Massif, Murmansk Oblast, 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-largest lake of the Kola peninsula.
Unique Identifiers
Mindat ID:
4092
Long-form identifier:
mindat:1:1:4092:7
IMA Classification of Umbozerite
Approved
IMA Formula:
Na3Sr4Th4+Si8O23(OH)
Approval year:
1973
First published:
1974
Classification of Umbozerite
9.HG.15
9 : SILICATES (Germanates)
H : Unclassified silicates
G : With REE, Th
9 : SILICATES (Germanates)
H : Unclassified silicates
G : With REE, Th
78.7.17.1
78 : Unclassified Silicates
7 :
78 : Unclassified Silicates
7 :
14.11.3
14 : Silicates not Containing Aluminum
11 : Silicates of Th and Hg
14 : Silicates not Containing Aluminum
11 : Silicates of Th and Hg
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Ubz | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Umbozerite
Vitreous
Transparency:
Translucent
Colour:
Bottle-green; rapidly changes to green-brown or brown
Hardness:
5 on Mohs scale
Hardness:
VHN100=506 - Vickers
Fracture:
Conchoidal
Optical Data of Umbozerite
Type:
Isotropic
RI values:
n = 1.640
Birefringence:
Isotropic minerals have no birefringence
Surface Relief:
Moderate
Chemistry of Umbozerite
Mindat Formula:
Na3Sr4Th[Si(O,OH)3-4]8
Element Weights:
Common Impurities:
Ti,Ce,Fe,U,Mn,Ca,Ba,K
Crystallography of Umbozerite
Crystal System:
Amorphous
Comment:
Heating yielded thorianite lines, with additional lines.
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.29 Å | (100) |
| 1.701 Å | (80) |
| 3.38 Å | (60) |
| 1.999 Å | (60) |
| 2.98 Å | (50) |
| 2.82 Å | (50) |
| 2.09 Å | (45) |
| 1.290 Å | (45) |
| 1.081 Å | (45) |
| 0.948 Å | (45) |
| 3.64 Å | (35) |
| 1.258 Å | (35) |
| 1.146 Å | (35) |
| 0.886 Å | (35) |
| 0.854 Å | (35) |
Comments:
Mt. Karnasurt, Russia. Data from Es'kova et al. (1974). Pattern collected after heating to 1100°C.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 35 : Ultra-alkali and agpaitic igneous rocks |
Type Occurrence of Umbozerite
General Appearance of Type Material:
Irregular masses and poorly formed tetragonal crystals up to 3 x 1 mm.
Place of Conservation of Type Material:
Mining Institute, St. Petersburg, Russia, 992/1.
Institute of Mineralogy and Geochemistry of Rare Elements, Moscow, Russia.
A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, 75150.
National School of Mines, Paris, France.
Institute of Mineralogy and Geochemistry of Rare Elements, Moscow, Russia.
A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, 75150.
National School of Mines, Paris, France.
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 Umbozerite
Other Language Names for Umbozerite
Common Associates
Associations Based on Photo Data:
| 28 photos of Umbozerite associated with Ussingite | Na2AlSi3O8OH |
| 23 photos of Umbozerite associated with Serandite | NaMn2+2Si3O8(OH) |
| 17 photos of Umbozerite associated with Vuonnemite | Na11Ti4+Nb2(Si2O7)2(PO4)2O3(F,OH) |
| 9 photos of Umbozerite associated with Belovite-(Ce) | NaCeSr3(PO4)3F |
| 8 photos of Umbozerite associated with Shkatulkalite | Na2Nb2Na3Ti(Si2O7)2O2(FO)(H2O)4(H2O)3 |
| 8 photos of Umbozerite associated with Manganoneptunite | KNa2Li(Mn2+)2Ti2[Si4O12]2 |
| 7 photos of Umbozerite associated with Chkalovite | Na2BeSi2O6 |
| 4 photos of Umbozerite associated with Tugtupite | (BeAlSi)Na4(SiO4)3Cl |
| 4 photos of Umbozerite associated with Sphalerite | ZnS |
| 4 photos of Umbozerite associated with Steenstrupine-(Ce) | Na14Mn2+2Fe3+2Ce6Zr(Si6O18)2(PO4)6(PO3OH)(OH)2 · 2H2O |
Related Minerals - Strunz-mindat Grouping
| 9.HG.20 | Mendeleevite-(Nd) | Cs6(Nd,REE,Ca)30(Si70O175)(OH,F,H2O)35 |
| 9.HG.20 | Rowlandite-(Y) | (Y,Ce)4Fe2+(Si2O7)2F2 (?) |
| 9.HG.20 | Mendeleevite-(Ce) | Cs6(Ce,REE,Ca)30(Si70O175)(OH,F,H2O)35 |
Radioactivity
Other Information
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 Umbozerite
mindat.org URL:
https://www.mindat.org/min-4092.html
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References for Umbozerite
Reference List:
Localities for Umbozerite
Showing 6 localities.
symbol to view information about a locality.
The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Russia | |
| [World of Stones 95:5-6 |
| Clark (1993) +1 other reference | |
| Pavel M. Kartashov (n.d.) +1 other reference | |
| Es'kova et al. (1974) +2 other references |
| Pekov (1998) |
| Ermolaeva et al. (2007) |
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Shkatulka pegmatite, Umbozero mine, Alluaiv Mountain, Lovozersky District, Murmansk Oblast, Russia