Unnamed (possible ordered As-analogue of Tokyoite)
A material that is NOT an approved mineral species
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Reported as As-rich tokyoite, although the Raman spectroscopic data suggests possible ordering. Found in central part of veins in a braunite-hematite-hausmannite rock, in close association with tokyoite and noélbensonite.
Compare lombardoite, that may be identical to this species (although the unit cell parameters are somewhat different).
Compare lombardoite, that may be identical to this species (although the unit cell parameters are somewhat different).
Unique Identifiers
Mindat ID:
50254
Long-form identifier:
mindat:1:1:50254:0
GUID
(UUID V4):
(UUID V4):
f054d13b-ca49-4bc4-a337-d9e423324cb3
Classification of Unnamed (possible ordered As-analogue of Tokyoite)
8.BG.05
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
G : With medium-sized and large cations, (OH, etc.):RO4 = 0.5:1
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
G : With medium-sized and large cations, (OH, etc.):RO4 = 0.5:1
Chemical Properties of Unnamed (possible ordered As-analogue of Tokyoite)
Formula:
Ba2Mn[(As,V)O4]2(OH)
Crystallography of Unnamed (possible ordered As-analogue of Tokyoite)
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/m
Setting:
P21/m
Cell Parameters:
a = 9.121 Å, b = 6.142 Å, c = 7.838 Å
β = 112°
β = 112°
Ratio:
a:b:c = 1.485 : 1 : 1.276
Unit Cell V:
407.12 ų (Calculated from Unit Cell)
Z:
2
Relationship of Unnamed (possible ordered As-analogue of Tokyoite) to other Species
Member of:
Other Members of this group:
Aldomarinoite | Sr2Mn3+(AsO4)2(OH) | Mon. 2/m : P21/m |
Arsenbrackebuschite | Pb2Fe3+(AsO4)2(OH) | Mon. 2/m : P2/m |
Arsentsumebite | Pb2Cu(AsO4)(SO4)(OH) | Mon. 2/m : P21/m |
Bearthite | Ca2Al(PO4)2(OH) | Mon. 2/m : P21/m |
Brackebuschite | Pb2Mn3+(VO4)2(OH) | Mon. 2/m : P21/m |
Bushmakinite | Pb2Al(PO4)(VO4)(OH) | Mon. 2/m : P21/m |
Calderónite | Pb2Fe3+(VO4)2(OH) | Mon. 2/m : P21/m |
Canosioite | Ba2Fe3+(AsO4)2(OH) | Mon. 2/m : P21/m |
Feinglosite | Pb2Zn(AsO4)2 · H2O | Mon. 2/m |
Ferribushmakinite | Pb2Fe3+(PO4)(VO4)(OH) | Mon. 2/m : P21/m |
Gamagarite | Ba2Fe3+(VO4)2(OH) | Mon. 2/m : P21/m |
Goedkenite | Sr2Al(PO4)2(OH) | Mon. 2/m : P21/m |
Grandaite | Sr2Al(AsO4)2(OH) | Mon. 2/m : P21/m |
Lombardoite | Ba2Mn3+(AsO4)2(OH) | Mon. 2/m : P21/m |
Tokyoite | Ba2Mn3+(VO4)2(OH) | Mon. 2/m : P21/m |
Tsumebite | Pb2Cu(PO4)(SO4)(OH) | Mon. 2/m : P21/m |
Related Minerals - Strunz-mindat Grouping
8.BG. | Canosioite | Ba2Fe3+(AsO4)2(OH) | Mon. 2/m : P21/m |
8.BG. | Aldomarinoite | Sr2Mn3+(AsO4)2(OH) | Mon. 2/m : P21/m |
8.BG. | Dongchuanite | Pb4ZnZn2(PO4)4(OH)2 | Tric. 1 : P1 |
8.BG. | Cuprodongchuanite | Pb4CuZn2(PO4)4(OH)2 | Tric. 1 : P1 |
8.BG.05 | Arsentsumebite | Pb2Cu(AsO4)(SO4)(OH) | Mon. 2/m : P21/m |
8.BG.05 | Bearthite | Ca2Al(PO4)2(OH) | Mon. 2/m : P21/m |
8.BG.05 | Brackebuschite | Pb2Mn3+(VO4)2(OH) | Mon. 2/m : P21/m |
8.BG.05 | Gamagarite | Ba2Fe3+(VO4)2(OH) | Mon. 2/m : P21/m |
8.BG.05 | Goedkenite | Sr2Al(PO4)2(OH) | Mon. 2/m : P21/m |
8.BG.05 | UM1994-19-PO:CuHMoPb | Pb2Cu(PO4)(MoO4,AsO4,CrO4,GaO4)(OH) | |
8.BG.05 | Tsumebite | Pb2Cu(PO4)(SO4)(OH) | Mon. 2/m : P21/m |
8.BG.05 | Arsenbrackebuschite | Pb2Fe3+(AsO4)2(OH) | Mon. 2/m : P2/m |
8.BG.05 | Feinglosite | Pb2Zn(AsO4)2 · H2O | Mon. 2/m |
8.BG.05 | Bushmakinite | Pb2Al(PO4)(VO4)(OH) | Mon. 2/m : P21/m |
8.BG.05 | Tokyoite | Ba2Mn3+(VO4)2(OH) | Mon. 2/m : P21/m |
8.BG.05 | Calderónite | Pb2Fe3+(VO4)2(OH) | Mon. 2/m : P21/m |
8.BG.05 | Ferribushmakinite | Pb2Fe3+(PO4)(VO4)(OH) | Mon. 2/m : P21/m |
8.BG.05 | Lombardoite | Ba2Mn3+(AsO4)2(OH) | Mon. 2/m : P21/m |
8.BG.10 | Mélonjosephite | CaFe2+Fe3+(PO4)2(OH) | Orth. mmm (2/m 2/m 2/m) : Pbam |
8.BG.15 | Tancoite | LiNa2Al(PO4)(PO3OH)(OH) | Orth. mmm (2/m 2/m 2/m) : Pbca |
8.BG.20 | Dmisokolovite | K3Cu5AlO2(AsO4)4 | Mon. 2/m : B2/b |
8.BG.25 | Shchurovskyite | K2CaCu6O2(AsO4)4 | Mon. 2 : B2 |
8.BG.30 | Wrightite | K2Al2O(AsO4)2 | Orth. mmm (2/m 2/m 2/m) : Pmma |
8.BG.35 | Polyarsite | Na7CaMgCu2(AsO4)4F2Cl | Mon. 2/m |
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 Unnamed (possible ordered As-analogue of Tokyoite)
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Costin, G., Fairey, B., Tsikos, H., Gucsik, A. (2015): Tokyoite, As-Rich Tokyoite, and Noélbensonite: New Occurrences From the Postmasburg Manganese Field, Northern Cape Province, South Africa. The Canadian Mineralogist: 53: 981-990; http://forum.amiminerals.it/viewtopic.php?f=5&t=13145&sid=6fca59e2d0d581a383c1b8034c276ab3 (2016)
Internet Links for Unnamed (possible ordered As-analogue of Tokyoite)
mindat.org URL:
https://www.mindat.org/min-50254.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
Mineral Dealers:
Localities for Unnamed (possible ordered As-analogue of Tokyoite)
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.
South Africa | |
| Costin, G., Fairey, B., Tsikos, H., Gucsik, A. (2015): Tokyoite, As-Rich Tokyoite, and Noélbensonite: New Occurrences From the Postmasburg Manganese Field, Northern Cape Province, South Africa. The Canadian Mineralogist: 53: 981-990 |
| Costin, G., Fairey, B., & Tsikos, H. (2014) Tokyoite and As-rich tokyoite: new occurrence in the manganese ore of the Postmasburg Manganese Field, South Africa. 21st annual IMA conference |