Bario-olgite
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About Bario-olgite
Formula:
(Ba,Sr)(Na,Sr,REE)2Na(PO4)2 ·
Colour:
light green
Lustre:
Vitreous
Hardness:
4 - 4½
Specific Gravity:
4
Crystal System:
Trigonal
Name:
For the chemical composition and its relationship to olgite
Originally considered to be Ba(Na,Sr,REE)2Na[PO4]2, the barium-dominant analogue of olgite, but then proposed for discreditation after the crystal structure of olgite was revised and found to be also Ba-dominant [Sokolowa, E. et al. (2005)]. However, since then, Sr-dominant olgites have been found and the discreditation proposal has been withdrawn. "Olgite" itself may in future become a series name rather than a species, and bario-olgite now has the revised formula (Ba,Sr)(Na,Sr,REE)2Na[PO4]2.
See also message http://www.mindat.org/mesg-14-95789.html
See also message http://www.mindat.org/mesg-14-95789.html
Classification of Bario-olgite
Approved
Approval Year:
2005
7/A.12-70
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
38.1.3.2
38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
1 : ABXO4
38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
1 : ABXO4
Physical Properties of Bario-olgite
Vitreous
Transparency:
Transparent
Colour:
light green
Hardness:
4 - 4½ on Mohs scale
Density:
4 g/cm3 (Measured)
Optical Data of Bario-olgite
Type:
Uniaxial
RI values:
nω = 1.628 nε = 1.623
Max Birefringence:
δ = 0.005
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
Chemical Properties of Bario-olgite
Formula:
(Ba,Sr)(Na,Sr,REE)2Na(PO4)2 ·
IMA Formula:
Na(Na,Sr,Ce)2Ba(PO4)2
Common Impurities:
Sr,La,Ce,Ca,K,Mn,Si
Crystallography of Bario-olgite
Crystal System:
Trigonal
Class (H-M):
3 - Pyramidal
Space Group:
P3
Cell Parameters:
a = 5.549 Å, c = 7.032 Å
Ratio:
a:c = 1 : 1.267
Unit Cell V:
187.5 ų
Z:
1
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.839 | (100) |
| 2.774 | (100) |
| 3.964 | (60) |
| 1.984 | (40) |
| 1.611 | (26) |
Type Occurrence of Bario-olgite
General Appearance of Type Material:
grains up to 1.5 x 1 cm and, more rarely, pyramidal-prismatic crystals
Geological Setting of Type Material:
hyeragpaitic pegmatite
Associated Minerals at Type Locality:
Synonyms of Bario-olgite
Other Language Names for Bario-olgite
Common Associates
Associated Minerals Based on Photo Data:
| Villiaumite | 2 photos of Bario-olgite associated with Villiaumite on mindat.org. |
| Vuonnemite | 2 photos of Bario-olgite associated with Vuonnemite on mindat.org. |
Related Minerals - Nickel-Strunz Grouping
| 8.AC. | Wopmayite | Ca6Na3□Mn(PO4)3(PO3OH)4 | Trig. 3m : R3c |
| 8.AC. | Edtollite | K2NaCu5Fe3+O2(AsO4)4 | Tric. 1 : P1 |
| 8.AC. | Alumoedtollite | K2NaCu5AlO2(AsO4)4 | Tric. 1 : P1 |
| 8.AC.05 | Howardevansite | NaCuFe2(VO4)3 | Tric. 1 : P1 |
| 8.AC.10 | Alluaudite | (Na,Ca)Mn2+(Fe3+,Mn2+,Fe2+,Mg)2(PO4)3 | Mon. |
| 8.AC.10 | Arseniopleite | (Ca,Na)NaMn2+(Mn2+,Mg,Fe2+)2(AsO4)3 | Mon. 2/m : P2/b |
| 8.AC.10 | Caryinite | (Na,Pb)(Ca,Na)CaMn2+2(AsO4)3 | Mon. 2/m |
| 8.AC.10 | Ferroalluaudite | (Na,Ca)Fe2+(Fe3+,Mn2+,Fe2+)2(PO4)3 | |
| 8.AC.10 | Hagendorfite | NaCaMn2+Fe2+2(PO4)3 | Mon. 2/m : B2/b |
| 8.AC.10 | Johillerite | Na(Mg,Zn)3Cu(AsO4)3 | Mon. 2/m : B2/b |
| 8.AC.10 | Maghagendorfite | (□,Na,)(Na,Ca,Fe2+)Mn(Mg,Fe2+,Fe3+)3(PO4)3 | Mon. |
| 8.AC.10 | Nickenichite | Na0.8Ca0.4Cu0.4(Mg,Fe)3(AsO4)3 | Mon. 2/m : B2/b |
| 8.AC.10 | Varulite | NaCaMn2+Mn2+2(PO4)3 | Mon. 2/m : B2/b |
| 8.AC.10 | Ferrohagendorfite | NaCaFe2+Fe2+2(PO4)3 | Mon. |
| 8.AC.10 | Bradaczekite | NaCu4(AsO4)3 | Mon. 2/m : B2/b |
| 8.AC.10 | Yazganite | NaFe3+2(Mg,Mn2+)(AsO4)3 · H2O | Mon. 2/m : B2/b |
| 8.AC.10 | Groatite | NaCaMn2(PO4)(HPO4)2 | Mon. 2/m : B2/b |
| 8.AC.15 | Bobfergusonite | Na2Mn5FeAl(PO4)6 | Mon. 2/m : P2/b |
| 8.AC.15 | Ferrowyllieite | (Na,Ca,Mn)(Fe,Mn)(Fe,Fe,Mg)Al(PO4)3 | Mon. 2/m : P21/b |
| 8.AC.15 | Qingheiite | NaMn3+Mg(Al,Fe3+)(PO4)3 | Mon. 2/m : P21/b |
| 8.AC.15 | Rosemaryite | (Na,Ca,Mn)(Mn,Fe2+)(Fe3+,Mg)Al(PO4)3 | Mon. 2/m : P21/b |
| 8.AC.15 | Wyllieite | (Na,Ca,Mn)(Mn,Fe)(Fe,Mg)Al(PO4)3 | Mon. 2/m |
| 8.AC.15 | Ferrorosemaryite | ◻NaFe2+Fe3+Al(PO4)3 | Mon. |
| 8.AC.15 | Qingheiite-(Fe2+) | Na2Fe2+MgAl(PO4)3 | Mon. 2/m : P21/m |
| 8.AC.18 | Manitobaite | Na16Mn2+ 25Al8(PO4)30 | Mon. m : Pb |
| 8.AC.20 | Marićite | NaFe2+(PO4) | Orth. mmm (2/m 2/m 2/m) : Pmna |
| 8.AC.25 | Berzeliite | (NaCa2)Mg2(AsO4)3 | Iso. m3m (4/m 3 2/m) : Ia3d |
| 8.AC.25 | Manganberzeliite | NaCa2Mn2+2(AsO4)3 | Iso. m3m (4/m 3 2/m) : Ia3d |
| 8.AC.25 | Palenzonaite | (NaCa2)Mn2+2(VO4)3 | Iso. m3m (4/m 3 2/m) : Ia3d |
| 8.AC.25 | Schäferite | Ca2NaMg2(VO4)3 | Iso. |
| 8.AC.30 | Brianite | Na2CaMg(PO4)2 | Mon. 2/m : P21/b |
| 8.AC.35 | Vitusite-(Ce) | Na3(Ce,La,Nd)(PO4)2 | Orth. mm2 : Pca21 |
| 8.AC.40 | Olgite | (Sr,Ba)(Na,Sr,REE)2Na(PO4)2 | Trig. 3m (3 2/m) : P3m1 |
| 8.AC.45 | Strontiowhitlockite | Sr9Mg(PO4)6(HPO4) | Trig. 3m : R3c |
| 8.AC.45 | Whitlockite | Ca9Mg(PO4)6(HPO4) | Trig. 3m : R3c |
| 8.AC.45 | Merrillite | Ca9NaMg(PO4)7 | Trig. 3m : R3m |
| 8.AC.45 | Tuite | Ca3(PO4)2 | Trig. 3m (3 2/m) : R3m |
| 8.AC.45 | Ferromerrillite | Ca9NaFe2+(PO4)7 | Trig. 3m : R3c |
| 8.AC.50 | Chladniite | {Ca}{Na8}{Ca4Na4}{(Mg,Fe2+)43}(PO4)36 | Trig. 3 : R3 |
| 8.AC.50 | Fillowite | {Mn2+}{Na8}{Ca4Na4}{(Mn2+,Fe2+)43}(PO4)36 | Trig. 3 : R3 |
| 8.AC.50 | Johnsomervilleite | Na10Ca6Mg18Fe25(PO4)36 | Trig. |
| 8.AC.50 | Galileiite | {Fe2+}{Na8}{Fe2+4Na4}{Fe2+43}(PO4)36 | Trig. 3 : R3 |
| 8.AC.50 | Stornesite-(Y) | {(Y, Ca)}{Na6◻2}{(Ca,Na)8}{(Mg,Fe2+)43}(PO4)36 | Trig. 3 : R3 |
| 8.AC.50 | Xenophyllite | Na4Fe2+7(PO4)6 | Tric. 1 : P1 |
| 8.AC.55 | Harrisonite | Ca(Fe2+,Mg)6(PO4)2(SiO4)2 | Trig. |
| 8.AC.60 | Kosnarite | KZr2(PO4)3 | Trig. 3m (3 2/m) : R3c |
| 8.AC.65 | Panethite | (Na,Ca)2(Mg,Fe2+)2(PO4)2 | Mon. 2/m : P21/b |
| 8.AC.70 | Stanfieldite | Ca4Mg5(PO4)6 | Mon. |
| 8.AC.75 | Ronneburgite | K2MnV4O12 | Mon. 2/m |
| 8.AC.80 | Tillmannsite | (Ag3Hg)(VO4,AsO4) | Tet. 4 : I4 |
| 8.AC.85 | Filatovite | K(Al,Zn)2(As,Si)2O8 | Mon. 2/m |
Related Minerals - Dana Grouping (8th Ed.)
| 38.1.3.1 | Olgite | (Sr,Ba)(Na,Sr,REE)2Na(PO4)2 | Trig. 3m (3 2/m) : P3m1 |
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.
References for Bario-olgite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Sokolova, E.V., Nadezhina, T.N., and Khomyakov, A.P. (1990) The X-ray diffraction study of highly barium-enriched olgite. Vestnik MGU, ser. Geology N1: 87-91 (in Russian).
Pekov, I.V., N.V. Chukanov, I.M. Kulikova, N.V. Zubkova, O.D. Krotova, N.I. Sorokina, D.Yu. Pushcharovsky (2004): "New mineral bario-olgite, Ba(Na,Sr,REE)2Na[PO4]2, and its crystal structure", Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 133(1): 41-49.
Sokolova, E., Hawthorne, F.C., and Khomyakov, A.P. (2005), Refinement of the crystal structure and revision of the chemical formula of olgite: (Ba,Sr)(Na,Sr,REE)2Na(PO4)2. Canadian Mineralogist: 43: 1521-1526.
Internet Links for Bario-olgite
mindat.org URL:
https://www.mindat.org/min-26520.html
Please feel free to link to this page.
Please feel free to link to this page.
External Links:
Mineral Dealers:
Localities for Bario-olgite
symbol to view information about a locality.
The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Italy | |
| Sharygin, V. V., Pekov, I. V., Zubkova, N. V., Khomyakov, A. P., Stoppa, F., & Pushcharovsky, D. Y. (2013). Umbrianite, K7Na2Ca2 [Al3Si10O29] F2Cl2, a new mineral species from melilitolite of the Pian di Celle volcano, Umbria, Italy. European Journal of Mineralogy, 25(4), 655-669. |
Russia (TL) | |
| I. V. Pekov, N. V. Chukanov, I. M. Kulikova, N. V. Zubkova, O. D. Krotova, N. I. Sorokina, D. Yu. Pushcharovsky: Proc. Russ. Min. Soc. 133(1):41-49 (2004) |
Palitra pegmatite, Karnasurt mine, Kedykverpakhk Mt, Lovozero Massif, Murmansk Oblast, Russia