Umbite
A valid IMA mineral species
This page is currently not sponsored. Click here to sponsor this page.
About Umbite
Formula:
K2(Zr,Ti)Si3O9 · H2O
Colour:
Colourless, light yellow
Lustre:
Vitreous
Hardness:
4½
Specific Gravity:
2.79
Crystal System:
Orthorhombic
Member of:
Name:
Named after Lake Umb, 20 km east of the type locality.
Dimorph of:
Unique Identifiers
Mindat ID:
4091
Long-form identifier:
mindat:1:1:4091:0
GUID
(UUID V4):
(UUID V4):
3780d23b-d46b-45f7-99ec-86de6c304b51
IMA Classification of Umbite
Approved
IMA Formula:
K2ZrSi3O9 · H2O
Approval year:
1982
First published:
1983
Classification of Umbite
9.DG.25
9 : SILICATES (Germanates)
D : Inosilicates
G : Inosilicates with 3-periodic single and multiple chains
9 : SILICATES (Germanates)
D : Inosilicates
G : Inosilicates with 3-periodic single and multiple chains
59.2.1.1
59 : CYCLOSILICATES Three-Membered Rings
2 : Three-Membered Rings, hydrated
59 : CYCLOSILICATES Three-Membered Rings
2 : Three-Membered Rings, hydrated
14.10.16
14 : Silicates not Containing Aluminum
10 : Silicates of Zr or Hf
14 : Silicates not Containing Aluminum
10 : Silicates of Zr or Hf
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 |
---|---|---|
Umb | 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 Umbite
Vitreous
Transparency:
Translucent
Colour:
Colourless, light yellow
Hardness:
4½ on Mohs scale
Hardness:
VHN100=305 - 401 - Vickers
Cleavage:
Perfect
On {010}, perfect, micaceous; {100}, less perfect
On {010}, perfect, micaceous; {100}, less perfect
Density:
2.79 g/cm3 (Measured) 2.79 g/cm3 (Calculated)
Optical Data of Umbite
Type:
Biaxial (-)
RI values:
nα = 1.596(2) nβ = 1.619(2) nγ = 1.630
2V:
Measured: 80° , Calculated: 68°
Max Birefringence:
δ = 0.034
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r < v weak
Optical Extinction:
X = c; Y = b; Z = a.
Chemistry of Umbite
Mindat Formula:
K2(Zr,Ti)Si3O9 · H2O
Common Impurities:
Ti,Hf,Fe,Na,F
Crystallography of Umbite
Crystal System:
Orthorhombic
Class (H-M):
2 2 2 - Disphenoidal
Space Group:
P21 21 21
Cell Parameters:
a = 10.208(2) Å, b = 13.241(4) Å, c = 7.174(1) Å
Ratio:
a:b:c = 0.771 : 1 : 0.542
Unit Cell V:
969.67 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Platy crystals, flattened on (010} with the forms {010} (dominant) and {101}, {110}, and {001}.
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
View
CIF File Best | x | y | z | a | b | c
CIF File Best | x | y | z | a | b | c
Rotation
Stop | Start
Stop | Start
Labels
Console Off | On | Grey | Yellow
Console Off | On | Grey | Yellow
Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0012738 | Umbite | Ilyushin G D (1993) New data on the crystal structure of umbite K2ZrSi3O9*H2O Izvestiya Akademii Nauk SSSR Neorganicheskie Materialy 29 971-975 | 1993 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.02 Å | (100b) |
5.91 Å | (90) |
2.87 Å | (80) |
1.797 Å | (80b) |
3.31 Å | (70) |
6.56 Å | (60b) |
2.156 Å | (40) |
Comments:
Vuonnemiok River Valley, Russia. Data from type description.
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 Umbite
Place of Conservation of Type Material:
Geology Museum, Kola Branch, Academy of Sciences, Apatity, Russia.
Mineralogical Museum, St. Petersburg University, St. Petersburg, Russia, 17072.
Mining Institute, St. Petersburg, Russia, 1631/1.
A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, 82758.
The Natural History Museum, London, England, 1994,35.
Mineralogical Museum, St. Petersburg University, St. Petersburg, Russia, 17072.
Mining Institute, St. Petersburg, Russia, 1631/1.
A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, 82758.
The Natural History Museum, London, England, 1994,35.
Associated Minerals at Type Locality:
Reference:
Khomyakov A P, Voronkov A A, Kobyashev Y S, Polezhaeva L I (1983) Umbite and paraumbite, new potassium zirconosilicates from the Khibina alkalic massif. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva 112: 461-469.
Synonyms of Umbite
Other Language Names for Umbite
Relationship of Umbite to other Species
Member of:
Other Members of this group:
Kamenevite | K2TiSi3O9 · H2O | Orth. 2 2 2 : P21 21 21 |
Structurally related to group(s):
Common Associates
Associated Minerals Based on Photo Data:
1 photo of Umbite associated with Villiaumite | NaF |
1 photo of Umbite associated with Djerfisherite | K6(Fe,Cu,Ni)25S26Cl |
1 photo of Umbite associated with Ilmenite | Fe2+TiO3 |
1 photo of Umbite associated with Aegirine | NaFe3+Si2O6 |
1 photo of Umbite associated with Microcline | K(AlSi3O8) |
1 photo of Umbite associated with Nepheline | Na3K(Al4Si4O16) |
1 photo of Umbite associated with Eudialyte | Na15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2 |
Related Minerals - Strunz-mindat Grouping
9.DG. | Calcinaksite | KNaCa(Si4O10) · H2O |
9.DG. | Barrydawsonite-(Y) | Na1.5Y0.5CaSi3O8(OH) |
9.DG. | Paratobermorite | Ca4(Al0.5Si0.5)2Si4O16(OH)(H2O)2 · (Ca · 3H2O) |
9.DG. | Alvesite | NaKZrSi6O15 · 2H2O |
9.DG.02 | Steedeite | NaMn2[Si3BO9](OH)2 |
9.DG.02 | Nolzeite | NaMn2[Si3BO9](OH)2 · 2H2O |
9.DG.05 | Bustamite | CaMn2+(Si2O6) |
9.DG.05 | Ferrobustamite | CaFe2+(Si2O6) |
9.DG.05 | Pectolite | NaCa2Si3O8(OH) |
9.DG.05 | Serandite | NaMn2+2Si3O8(OH) |
9.DG.05 | Wollastonite | Ca3(Si3O9) |
9.DG.05 | Wollastonite-1A | CaSiO3 |
9.DG.05 | Tanohataite | LiMn2Si3O8(OH) |
9.DG.05 | Schizolite | NaCaMnSi3O8(OH) |
9.DG.05 | Murakamiite | LiCa2Si3O8(OH) |
9.DG.05 | Dalnegorskite | Ca5Mn(Si3O9)2 |
9.DG.07 | Cascandite | CaScSi3O8(OH) |
9.DG.08 | Plombièrite | [Ca4Si6O16(OH)2 · 2H2O] · (Ca · 5H2O) |
9.DG.10 | Clinotobermorite | [Ca4Si6O17 · 2H2O] · (Ca · 3H2O) |
9.DG.10 | Riversideite | Ca5(HSi3O9)2 · 2H2O |
9.DG.10 | Tobermorite | Ca4Si6O17(H2O)2 · (Ca · 3H2O) |
9.DG.12 | Jusite | Na2Ca15Al4Si16O54 · 17H2O |
9.DG.12 | Kenotobermorite | Ca4Si6O15(OH)2(H2O)2 · 3H2O |
9.DG.15 | Foshagite | Ca4(Si3O9)(OH)2 |
9.DG.20 | Jennite | Ca9(Si3O9)2(OH)8 · 8H2O |
9.DG.20 | Kamenevite | K2TiSi3O9 · H2O |
9.DG.25 | Paraumbite | K3Zr2H(Si3O9)2 · nH2O |
9.DG.30 | Sørensenite | Na4SnBe2Si6O16(OH)4 |
9.DG.32 | Escheite | Ca2NaMnTi5[Si12O34]O2(OH)3 · 12H2O |
9.DG.35 | Xonotlite | Ca6(Si6O17)(OH)2 |
9.DG.40 | Hillebrandite | Ca2(SiO3)(OH)2 |
9.DG.45 | Zorite | Na8(Ti,Nb)5(Si6O17)2(OH,O)5 · 14H2O |
9.DG.45 | Chivruaiite | Ca4(Ti,Nb)5(Si6O17)2(OH,O)5 · 13-14H2O |
9.DG.50 | Haineaultite | (Na,Ca)5Ca(Ti,Nb)5(Si6O17)2(OH,F)8 · 5H2O |
9.DG.55 | Epididymite | Na2Be2Si6O15 · H2O |
9.DG.60 | Eudidymite | Na2Be2Si6O15 · H2O |
9.DG.65 | Elpidite | Na2ZrSi6O15 · 3H2O |
9.DG.65 | Patynite | NaKCa4[Si9O23] |
9.DG.67 | Whelanite | Cu2+2Ca6[Si6O17(OH)](CO3)(OH)3 · 2H2O |
9.DG.70 | Fenaksite | (K,Na)4(Fe,Mn)2(Si4O10)2(OH,F) |
9.DG.70 | Litidionite | CuNaKSi4O10 |
9.DG.70 | Manaksite | KNaMnSi4O10 |
9.DG.70 | Yusupovite | Na2Zr(Si6O15) · 2.5H2O |
9.DG.70 | Enricofrancoite | KNaCaSi4O10 |
9.DG.75 | Tinaksite | K2Na(Ca,Mn2+)2TiO[Si7O18(OH)] |
9.DG.75 | Tokkoite | K2Ca4[Si7O18(OH)](OH,F) |
9.DG.75 | Senkevichite | CsKNaCa2TiO[Si7O18](OH) |
9.DG.80 | Canasite | K3Na3Ca5Si12O30(OH)4 |
9.DG.80 | Fluorcanasite | K3Na3Ca5Si12O30F4 · H2O |
9.DG.85 | Miserite | K1.5-x(Ca,Y,REE)5(Si6O15)(Si2O7)(OH,F)2 · yH2O |
9.DG.90 | Frankamenite | K3Na3Ca5(Si12O30)(F,OH)4 · H2O |
9.DG.92 | Charoite | (K,Sr)15-16(Ca,Na)32[Si6O11(O,OH)6]2[Si12O18(O,OH)12]2[Si17O25(O,OH)18]2(OH,F)4 · ~3H2O |
9.DG.95 | Yuksporite | K4(Ca,Na)14(Sr,Ba)2(◻,Mn,Fe)(Ti,Nb)4(O,OH)4(Si6O17)2(Si2O7)3(H2O,OH)3 |
9.DG.97 | Eveslogite | (Na,K,Ca,Sr,Ba)48 [(Ti,Nb,Mn,Fe2+)12Si48O144(OH)12](F,OH,Cl)14 |
Fluorescence of Umbite
Weak yellowish fluorescence under UV. Fluorescence is bright whitish-green at the temperature of liquid nitrogen.
Other Information
IR Spectrum:
IR spectrum shows bands for molecular water.
Thermal Behaviour:
The X-ray pattern of material heated to 500°C is that of wadeite.
Notes:
Readily decomposed by cold 10% HCl, leaving a silica skeleton.
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 Umbite
mindat.org URL:
https://www.mindat.org/min-4091.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
References for Umbite
Reference List:
Localities for Umbite
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).
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.
All localities listed without proper references should be considered as questionable.
Russia | |
| Arzamastsev et al. (2008) |
www.mindat.org (n.d.) +2 other references | |
Arzamastsev et al. (2008) | |
33 IGC excursion No 47 +2 other references | |
Pekov et al. (2004) | |
| Khomyakov et al. (1983) +2 other references |
Ferraris et al. (2001) +1 other reference | |
Pavel.M. Kartashov (n.d.) | |
| Takai et al. (2011) |
Quick NavTopAbout UmbiteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesRelationshipsCommon AssociatesStrunz-MindatFluorescence Other InformationInternet Links References Localities Locality List
Koashva Open Pit, Koashva Mt, Khibiny Massif, Murmansk Oblast, Russia