Log In
Olgite
A valid IMA mineral species
This page is currently not sponsored. Click here to sponsor this page.
About Olgite
Olga A. Vorobiova
Formula:
(Sr,Ba)(Na,Sr,REE)2Na(PO4)2
Colour:
Bright blue, bluish green
Lustre:
Vitreous
Hardness:
4½
Specific Gravity:
3.94
Crystal System:
Trigonal
Name:
Named by Khomyakov et al. in 1980 in honor of Olga Anisimovne-Vorobiova (Ольга Анисимовна-Воробьева) (19 December 1902 - 14 February 1974), Russian mineralogist. She was an expert on the alkaline rocks of the Kola peninsula.
("Olgite" may perhaps in future become a series name, with Ba- and Sr- endmembers.) See also http://www.mindat.org/mesg-14-95789.html
Unique Identifiers
Mindat ID:
2973
Long-form identifier:
mindat:1:1:2973:1
Similar Names
| Algite | A synonym of 'Alginite' |
| Ollite | A synonym of Talc |
IMA Classification of Olgite
Approved
IMA Formula:
(Ba,Sr)(Na,Sr,REE)2Na(PO4)2
Approval year:
1979
First published:
1980
Classification of Olgite
8.AC.40
8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
C : With medium-sized and large cations
8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
C : With medium-sized and large cations
38.1.3.1
38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
1 : ABXO4
38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
1 : ABXO4
19.5.7
19 : Phosphates
5 : Phosphates of Sr and Ba
19 : Phosphates
5 : Phosphates of Sr and Ba
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 |
|---|---|---|
| Olg | 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 Olgite
Vitreous
Transparency:
Translucent
Colour:
Bright blue, bluish green
Hardness:
4½ on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
3.94 g/cm3 (Measured) 3.904 g/cm3 (Calculated)
Optical Data of Olgite
Type:
Uniaxial (-)
RI values:
nω = 1.623 nε = 1.619
Birefringence:
0.004
Max. Birefringence:
δ = 0.004
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Interference Figure:
This shows the idealized uniaxial interference figure - the conoscopic
(convergent-light, Bertrand-lens-in) view, for a grain cut with the optic axis
centred and vertical. The coloured rings are isochromatics, computed with the
same physics as the Michel-Lévy bar above; the dark cross is the isogyre.
For a genuinely uniaxial mineral viewed this way, that cross stays perfectly stationary if you rotate the stage - unlike a biaxial mineral, where it splits apart on rotation. That invariance is itself the standard diagnostic test for telling uniaxial and biaxial minerals apart at the microscope.
For a genuinely uniaxial mineral viewed this way, that cross stays perfectly stationary if you rotate the stage - unlike a biaxial mineral, where it splits apart on rotation. That invariance is itself the standard diagnostic test for telling uniaxial and biaxial minerals apart at the microscope.
Optical Extinction:
Parallel
Chemistry of Olgite
Mindat Formula:
(Sr,Ba)(Na,Sr,REE)2Na(PO4)2
Element Weights:
Crystallography of Olgite
Crystal System:
Trigonal
Class (H-M):
3m(32/m) - Hexagonal Scalenohedral
Space Group:
P3m1
Cell Parameters:
a = 5.5606 Å, c = 7.045 Å
Ratio:
a:c = 1 : 1.267
Unit Cell V:
188.65 ų
Z:
1
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) |
|---|---|---|---|---|---|---|---|
| 0006064 | Olgite | Sokolova E, Hawthorne F C, Khomyakov A P (2005) Refinement of the crystal structure and revision of the chemical formula of olgite: (Ba,Sr) (Na,Sr,REE)2 Na [PO4]2 The Canadian Mineralogist 43 1521-1526 |  | 2005 | Lovozero alkaline massif, Kola Peninsula, Russia | 0 | 293 |
| 0006063 | Olgite | Sokolova E, Hawthorne F C, Khomyakov A P (2005) Refinement of the crystal structure and revision of the chemical formula of olgite: (Ba,Sr) (Na,Sr,REE)2 Na [PO4]2 The Canadian Mineralogist 43 1521-1526 | | 2005 | Lovozero alkaline massif, Kola Peninsula, Russia | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 6.99 Å | (30) |
| 3.97 Å | (40) |
| 2.84 Å | (100) |
| 2.76 Å | (100) |
| 2.27 Å | (30) |
| 1.982 Å | (60) |
| 1.647 Å | (30) |
| 1.607 Å | (40) |
Comments:
ICDD 33-1212
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 | |
| 36 : Carbonatites, kimberlites, and related igneous rocks |
Type Occurrence of Olgite
General Appearance of Type Material:
Grains up to 1-2 mm in diameter in analcime and natrosilite.
Place of Conservation of Type Material:
A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, 80179.
Geological Setting of Type Material:
Nepheline syenite pegmatite.
Associated Minerals at Type Locality:
Synonyms of Olgite
Other Language Names for Olgite
Common Associates
Associations Based on Photo Data:
| 3 photos of Olgite associated with Villiaumite | NaF |
Related Minerals - Strunz-mindat Grouping
| 8.AC. | 'Crocobelonite-1M' | CaFe3+2O(PO4)2 |
| 8.AC. | Magnesioqingheiite | Na2Mg(MgAl)(PO4)3 |
| 8.AC. | Manganobadalovite | NaNaMn(MgFe3+)(AsO4)3 |
| 8.AC. | Changesite-(Y) | (Ca8Y)◻Fe2+(PO4)7 |
| 8.AC. | Babunaite-(Nd) | NdAsO4 |
| 8.AC. | Crocobelonite | CaFe3+2O(PO4)2 |
| 8.AC. | Wopmayite | Ca6Na3◻Mn(PO4)3(PO3OH)4 |
| 8.AC. | Beershevaite | CaFe3+3(PO4)3O |
| 8.AC. | Epiebnerite | (NH4)Zn(PO4) |
| 8.AC. | Ebnerite | (NH4)Zn(PO4) |
| 8.AC.X | Dyrnaesite-(La) | Na8Ce4+(La,REE)2(PO4)6 |
| 8.AC. | Edtollite | K2NaCu5Fe3+O2(AsO4)4 |
| 8.AC. | Angarfite | NaFe3+5(PO4)4(OH)4 · 4H2O |
| 8.AC. | Kabalovite | Fe2+3Fe3+4(PO4)6 |
| 8.AC. | Nazarchukite | Ca2NiFe3+2(PO4)4 |
| 8.AC. | Calciohatertite | NaNaCa(CaFe3+)(AsO4)3 |
| 8.AC. | Alumoedtollite | K2NaCu5AlO2(AsO4)4 |
| 8.AC.02 | Grigorievite | Cu3Fe3+2Al2(VO4)6 |
| 8.AC.02 | Koksharovite | CaMg2Fe3+4(VO4)6 |
| 8.AC.02 | Ziminaite | Fe3+ 6 (VO4)6 |
| 8.AC.05 | Hatertite | Na2(Ca,Na)(Fe3+,Cu)2(AsO4)3 |
| 8.AC.05 | Erikapohlite | Cu3(Zn,Cu,Mg)4Ca2(AsO4)6 · 2H2O |
| 8.AC.05 | 'Unnamed (Na-Mg Arsenate Hydroxyarsenate)' | NaMg3(AsO4)(AsO3OH)2 |
| 8.AC.05 | 'Unnamed (Na-Zn-H Arsenate Hydroxyarsenate)' | Na(Na0.6Zn0.4)Zn2(H0.6AsO4)(AsO3OH)2 |
| 8.AC.05 | Calciojohillerite | NaCaMg3(AsO4)3 |
| 8.AC.05 | Magnesiohatertite | (Na,Ca)2Ca(Mg,Fe3+)2(AsO4)3 |
| 8.AC.05 va | 'Alluaudite-Na[]' | ◻4Na4Mn2+4Fe3+8(PO4)12 |
| 8.AC.05 va | 'Alluaudite-Ca[]' | ◻4Ca4Mn2+4Fe3+8(PO4)12 |
| 8.AC.05 va | 'Ferroalluaudite-NaNa' | Na4Na4Fe2+4Fe3+8(PO4)12 |
| 8.AC.05 | 'Hagendorfite-NaNa' | NaNaFe2+(Mn2+,Mn3+)(PO4)3 (?) |
| 8.AC.05 | O'Danielite | Na(Zn,Mg)3(AsO4)(AsO3OH)2 |
| 8.AC.05 | Howardevansite | NaCuFe2(VO4)3 |
| 8.AC.05 | Khrenovite | Na3Fe3+2(AsO4)3 |
| 8.AC.05 | Zincobradaczekite | NaZn2Cu2(AsO4)3 |
| 8.AC.05 | Paraberzeliite | NaCa2Mg2(AsO4)3 |
| 8.AC.05 | Badalovite | Na2Mg2Fe(AsO4)3 |
| 8.AC.05 | Magnesiocanutite | NaMnMg2[AsO4]2[AsO2(OH)2] |
| 8.AC.05 | Manganohatertite | NaNaCa(MnFe3+)(AsO4)3 |
| 8.AC.05 | Camanchacaite | NaCaMg2[AsO4][AsO3(OH)]2 |
| 8.AC.07 | Zhanghuifenite | Na3Mn4Mg2Al(PO4)6 |
| 8.AC.07 | Ferrobobfergusonite | Na2Fe2+5Fe3+Al(PO4)6 |
| 8.AC.10 | Hagendorfite | NaCaMn2+Fe2+2(PO4)3 |
| 8.AC.10 | 'Ferrohagendorfite' | NaCaFe2+Fe2+2(PO4)3 |
| 8.AC.10 | Johillerite | Na(Mg,Zn)3Cu(AsO4)3 |
| 8.AC.10 | Varulite | NaCaMn2+Mn2+2(PO4)3 |
| 8.AC.10 | Nickenichite | Na0.8Ca0.4Cu0.4(Mg,Fe)3(AsO4)3 |
| 8.AC.10 | Arseniopleite | NaCaMnMn2(AsO4)3 |
| 8.AC.10 | Groatite | NaCaMn2(PO4)[PO3(OH)]2 |
| 8.AC.10 | Alluaudite | (Na,Ca)Mn2+(Fe3+,Mn2+,Fe2+,Mg)2(PO4)3 |
| 8.AC.10 | Bradaczekite | NaCu4(AsO4)3 |
| 8.AC.10 | Caryinite | (Na,Pb)(Ca,Na)CaMn2+2(AsO4)3 |
| 8.AC.10 | Ferroalluaudite | (Na,Ca)Fe2+(Fe3+,Mn2+,Fe2+)2(PO4)3 |
| 8.AC.10 | Maghagendorfite | (Na,◻)MgMn2+(Fe2+,Fe3+)2(PO4)3 |
| 8.AC.15 | Ferrowyllieite | (Na,Ca,Mn)(Fe,Mn)(Fe,Fe,Mg)Al(PO4)3 |
| 8.AC.15 | Qingheiite | NaNaMn2+(MgAl)(PO4)3 |
| 8.AC.15 | Rosemaryite | (Na,Ca,Mn)(Mn,Fe2+)(Fe3+,Mg)Al(PO4)3 |
| 8.AC.15 | Ferroqingheiite | NaNaFe2+(MgAl)(PO4)3 |
| 8.AC.15 | Ferrorosemaryite | ◻NaFe2+Fe3+Al(PO4)3 |
| 8.AC.15 | Bobfergusonite | Na2Mn5FeAl(PO4)6 |
| 8.AC.15 | Wyllieite | (Na,Ca,Mn)(Mn,Fe)(Fe,Mg)Al(PO4)3 |
| 8.AC.17 | Czochralskiite | Na4Ca3Mg(PO4)4 |
| 8.AC.18 | Manitobaite | Na16Mn2+ 25Al8(PO4)30 |
| 8.AC.20 | Marićite | NaFe2+(PO4) |
| 8.AC.25 | Schäferite | (NaCa2)Mg2(VO4)3 |
| 8.AC.25 | Berzeliite | (NaCa2)Mg2(AsO4)3 |
| 8.AC.25 | Matyhite | Ca18(Ca,◻)2Fe2+2(PO4)14 |
| 8.AC.25 | Hedegaardite | (Ca,Na)9(Ca,Na)Mg(PO4)6(PO3OH) |
| 8.AC.25 | Manganberzeliite | (NaCa2)Mn2+2(AsO4)3 |
| 8.AC.25 | Palenzonaite | (NaCa2)Mn2+2(VO4)3 |
| 8.AC.30 | Brianite | Na2CaMg(PO4)2 |
| 8.AC.35 | Vitusite-(Ce) | Na3(Ce,La,Nd)(PO4)2 |
| 8.AC.40 | Bario-olgite | (Ba,Sr)(Na,Sr,REE)2Na(PO4)2 · |
| 8.AC.45 | Magnesiochangesite-(Ce) | (Ca8Ce)◻Mg(PO4)7 |
| 8.AC.45 | Tuite | Ca3(PO4)2 |
| 8.AC.45 | Ferromerrillite | Ca9NaFe2+(PO4)7 |
| 8.AC.45 | Strontiowhitlockite | Sr9Mg(PO4)6(PO3OH) |
| 8.AC.45 | Magnesiochangesite-(Y) | (Ca8Y)◻ Mg(PO4)7 |
| 8.AC.45 | Changesite-(Ce) | (Ca8Ce)◻Fe2+(PO4)7 |
| 8.AC.45 | Merrillite | Ca9NaMg(PO4)7 |
| 8.AC.45 | Whitlockite | Ca9Mg(PO4)6(PO3OH) |
| 8.AC.47 | Iwateite | Na2BaMn(PO4)2 |
| 8.AC.47 | Ozerovaite | Na2KAl3(AsO4)4 |
| 8.AC.47 | Yurmarinite | Na7(Fe3+,Mg,Cu)4(AsO4)6 |
| 8.AC.47 | Pansnerite | K3Na3(Fe3+,Al)6(AsO4)8 |
| 8.AC.47 | Anatolyite | Na6(Ca,Na)(Mg,Fe3+)3Al(AsO4)6 |
| 8.AC.50 | Fillowite | Na3CaMn2+11(PO4)9 |
| 8.AC.50 | Galileiite | Na3Fe2+Fe2+11(PO4)9 |
| 8.AC.50 | Johnsomervilleite | Na3CaFe11(PO4)9 |
| 8.AC.50 | Xenophyllite | Na4Fe2+7(PO4)6 |
| 8.AC.50 | Udinaite | NaMg4(VO4)3 |
| 8.AC.50 | Arsenudinaite | NaMg4(AsO4)3 |
| 8.AC.50 | Chladniite | Na3CaMg11(PO4)9 |
| 8.AC.52 | Lasnierite | (Ca,Sr)(Mg,Fe2+)2Al(P[O,F]4)3 |
| 8.AC.55 | Pharmazincite | KZnAsO4 |
| 8.AC.57 | Zubkovaite | Ca3Cu3(AsO4)4 |
| 8.AC.60 | Kosnarite | KZr2(PO4)3 |
| 8.AC.65 | Panethite | (Na,Ca)2(Mg,Fe2+)2(PO4)2 |
| 8.AC.70 | Stanfieldite | Ca4Mg5(PO4)6 |
| 8.AC.75 | Ronneburgite | K2MnV4O12 |
| 8.AC.80 | Tillmannsite | Ag3Hg[(V,As)O4] |
| 8.AC.85 | Filatovite | K(Al,Zn)2(As,Si)2O8 |
Fluorescence of Olgite
Not fluorescent.
Other Information
IR Spectrum:
The IR spectrum shows bands characteristic of phosphates.
Notes:
The mineral is insoluble in water, dissolved by cold 10% HCl.
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 Olgite
mindat.org URL:
https://www.mindat.org/min-2973.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Olgite
Reference List:
Fleischer, Michael, Pabst, Adolf (1981) New Mineral Names. American Mineralogist, 66 (3-4) 436-439 p.438
Khomyakov, A. P. (1982) Olgite, Na(Sr, Ba) PO4, a new mineral. International Geology Review, 24 (4) 492-496 doi:10.1080/00206818209452434
Localities for Olgite
Showing 4 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.
Czech Republic | |
| Cempírek +2 other references |
Italy | |
| Sharygin et al. (2013) |
Russia (TL) | |
| Khomyakov et al. (1980) +1 other reference |
| Pekov (1998) |
Quick NavTopAbout OlgiteUnique IdentifiersSimilar NamesIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesCommon AssociatesStrunz-MindatFluorescence Other InformationInternet Links References Localities Locality List
Alluaiv Mountain, Lovozersky District, Murmansk Oblast, Russia