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Bismutomicrolite (of Hogarth 1977)

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About Bismutomicrolite (of Hogarth 1977)Hide

Colour:
Yellow, pink, brown; dark grey to black
Lustre:
Resinous, Dull
Hardness:
5
Specific Gravity:
6.5
Crystal System:
Isometric
Name:
Assigned by the IMA Committee on pyrochlore nomenclature for the predominant bismuth content and relation to microlite in the pyrochlore group. Name discredited in 2010.
The composition claimed for the original bismutomicrolite [“westgrenite”] (von Knorring & Mrose 1963) probably refers to a mixture. The bismutomicrolite studied by Erichsen de Oliveira et al. (1970) and Tindle & Breaks (1998) is a zero valent dominant member of the microlite group.


Classification of Bismutomicrolite (of Hogarth 1977)Hide

Discredited
4.DH.15

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
H : With large (+- medium-sized) cations; sheets of edge-sharing octahedra
8.2.2.5

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
2 : A2B2O6(O,OH,F)
18.1.35

18 : Niobates and Tantalates
1 : Niobates and tantalates containing neither rare earths nor U

Physical Properties of Bismutomicrolite (of Hogarth 1977)Hide

Resinous, Dull
Transparency:
Translucent
Colour:
Yellow, pink, brown; dark grey to black
Hardness:
Tenacity:
Brittle
Fracture:
Irregular/Uneven
Density:
6.5 g/cm3 (Measured)    6.9 g/cm3 (Calculated)

Optical Data of Bismutomicrolite (of Hogarth 1977)Hide

Type:
Isotropic
RI values:
n = 2
Birefringence:
Isotropic minerals have no birefringence
Surface Relief:
Very High

Crystallography of Bismutomicrolite (of Hogarth 1977)Hide

Crystal System:
Isometric
Class (H-M):
m3m (4/m 3 2/m) - Hexoctahedral
Space Group:
Fd3m
Cell Parameters:
a = 10.46 Å
Unit Cell V:
1,144.45 ų (Calculated from Unit Cell)
Z:
8
Morphology:
Rarely octahedral crystals; commonly massive, in veinlets.

Geological EnvironmentHide

Geological Setting:
In pegmatites

First Recorded Occurrence of Bismutomicrolite (of Hogarth 1977)Hide

Geological Setting of First Recorded Material:
Late hydrothermal replacement of bismutotantalite in a lithium-bearing pegmatite
Associated Minerals at First Recorded Locality:

Synonyms of Bismutomicrolite (of Hogarth 1977)Hide

Other Language Names for Bismutomicrolite (of Hogarth 1977)Hide

Related Minerals - Nickel-Strunz GroupingHide

4.DH.Fluornatropyrochlore(Na,Pb,Ca,REE,U)2Nb2O6FIso. m3m (4/m 3 2/m)
4.DH.Roméite GroupA2(Sb5+)2O6Z
4.DH.Hydroxykenomicrolite(◻,Na,Sb3+)2Ta2O6(OH)Iso.
4.DH.OxyplumboroméitePb2Sb2O6OIso. m3m (4/m 3 2/m) : Fd3m
4.DH.Cesiokenopyrochlore□Nb2(O,OH)6(Cs,◻) (◻ ∼ 0.20)Iso. m3m (4/m 3 2/m) : Fd3m
4.DH.05BranneriteUTi2O6Mon. 2/m : B2/m
4.DH.05OrthobranneriteU4+U6+Ti4O12(OH)2Orth.
4.DH.05Thorutite(Th,U,Ca)Ti2(O,OH)6Mon.
4.DH.10KassiteCaTi2O4(OH)2Orth.
4.DH.10Lucasite-(Ce)CeTi2(O,OH)6Mon.
4.DH.15Bariomicrolite (of Hogarth 1977)Iso. m3m (4/m 3 2/m) : Fd3m
4.DH.15Betafite (of Hogarth 1977)(Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)Iso. m3m (4/m 3 2/m) : Fd3m
4.DH.15Ceriopyrochlore (of Hogarth 1977)A2Nb2(O,OH)6Z
4.DH.15JixianitePb(W,Fe3+)2(O,OH)7Iso. m3m (4/m 3 2/m) : Fd3m
4.DH.15Hydropyrochlore(H2O,□)2Nb2(O,OH)6(H2O)Iso. m3m (4/m 3 2/m) : Fd3m
4.DH.15Plumbopyrochlore (of Skorobogatova et al.)A2Nb2(O,OH)6Z
4.DH.15Plumbomicrolite (of Hogarth 1977)
4.DH.15Plumbobetafite (of Hogarth 1977)A2-mD2X6-wZ1-n
4.DH.15Stibiomicrolite (of Groat et al.)
4.DH.15Strontiopyrochlore (of Hogarth 1977)A2Nb2(O,OH)6Z
4.DH.15Stannomicrolite (of Hogarth 1977)
4.DH.15Stibiobetafite (of Černý et al.)A2-mD2X6-wZ1-nIso.
4.DH.15Uranpyrochlore (of Hogarth 1977)(Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F)Iso.
4.DH.15Yttropyrochlore (of Hogarth 1977)A2Nb2(O,OH)6Z
4.DH.15Fluornatromicrolite(Na1.5Bi0.5)Ta2O6FIso. m3m (4/m 3 2/m) : Fd3m
4.DH.15Bismutopyrochlore (of Chukanov et al.)(Bi,Ca,U,Pb)2-xNb2(O,OH)6(OH)Amor.
4.DH.15Hydrokenoelsmoreite2W2O6(H2O)Iso. m3m (4/m 3 2/m) : Fd3m
4.DH.20BismutostibiconiteBi(Sb5+,Fe3+)2O7Iso. m3m (4/m 3 2/m) : Fd3m
4.DH.20BindheimitePb2Sb2O6OIso. m3m (4/m 3 2/m) : Fd3m
4.DH.20MonimolitePb2Sb5+2O7Iso. m3m (4/m 3 2/m)
4.DH.20CuproroméiteCu2Sb2(O,OH)7Iso.
4.DH.20StetefeldtiteAg2Sb2(O,OH)7Iso.
4.DH.20StibiconiteSb3+Sb5+2O6(OH)
4.DH.25RosiaitePbSb5+2O6Trig. 3m (3 2/m) : P3 1m
4.DH.30ZirconoliteCaZrTi2O7Orth.
4.DH.35LiandratiteU(Nb,Ta)2O8Trig.
4.DH.35PetscheckiteUFe(Nb,Ta)2O8Hex.
4.DH.40IngersoniteCa3Mn2+Sb5+4O14Trig. 3 2 : P31 2 1
4.DH.45PittongiteNa0.22(W,Fe3+)(O,OH)3 · 0.44H2OHex. 6 m2 : P6m2

Related Minerals - Dana Grouping (8th Ed.)Hide

8.2.2.1Microlite GroupA2-mTa2X6-wZ-nIso. m3m (4/m 3 2/m) : Fd3m
8.2.2.2Bariomicrolite (of Hogarth 1977)Iso. m3m (4/m 3 2/m) : Fd3m
8.2.2.3Plumbomicrolite (of Hogarth 1977)
8.2.2.6Stannomicrolite (of Hogarth 1977)
8.2.2.7Stibiomicrolite (of Groat et al.)

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

18.1.1LithiotantiteLiTa3O8Mon.
18.1.2LueshiteNaNbO3Orth. mmm (2/m 2/m 2/m)
18.1.3NatroniobiteNaNbO3Mon.
18.1.4FranconiteNa(Nb2O5)(OH) · 3H2OMon.
18.1.5NatrotantiteNa2Ta4O11Mon.
18.1.6IrtyshiteNa2(Ta,Nb)4O11Hex.
18.1.7Rankamaite(Na,K)3(Ta,Nb,Al)11(O,OH)31Orth. mmm (2/m 2/m 2/m) : Cmmm
18.1.8Hydropyrochlore(H2O,□)2Nb2(O,OH)6(H2O)Iso. m3m (4/m 3 2/m) : Fd3m
18.1.9CalciotantiteCaTa4O11Hex.
18.1.10RynersoniteCaTa2O6Orth. mmm (2/m 2/m 2/m)
18.1.11Microlite GroupA2-mTa2X6-wZ-nIso. m3m (4/m 3 2/m) : Fd3m
18.1.12BelyankiniteCa1-2(Ti,Nb)5O12 · 9H2O (?)Amor.
18.1.13LatrappiteCa2NbFe3+O6Orth. mmm (2/m 2/m 2/m) : Pnma
18.1.14Hochelagaite(Ca,Na,Sr)(Nb,Ti,Si,Al)4O11 · 8H2OMon.
18.1.15Bariomicrolite (of Hogarth 1977)Iso. m3m (4/m 3 2/m) : Fd3m
18.1.16ParabariomicroliteBaTa4O10(OH)2 · 2H2OTrig.
18.1.17Bariopyrochlore (of Hogarth 1977)A2Nb2(O,OH)6ZIso. m3m (4/m 3 2/m) : Fd3m
18.1.18AlumotantiteAlTaO4Orth. mmm (2/m 2/m 2/m) : Pbcn
18.1.19SimpsoniteAl4Ta3O13(OH)Trig. 3 : P3
18.1.20Sosedkoite(K,Na)5Al2(Ta,Nb)22O60Orth.
18.1.21Thoreaulite(Sn2+,Pb)(Ta,Nb)2O6Mon.
18.1.22Stannomicrolite (of Hogarth 1977)
18.1.23FoorditeSn2+(Nb,Ta)2O6Mon. 2/m : B2/b
18.1.24ChangbaiitePbNb2O6Trig.
18.1.25Plumbopyrochlore (of Skorobogatova et al.)A2Nb2(O,OH)6Z
18.1.26Plumbomicrolite (of Hogarth 1977)
18.1.27StibiocolumbiteSb(Nb,Ta)O4Orth. mm2
18.1.28StibiotantaliteSb(Ta,Nb)O4Orth. mm2
18.1.29NatrobistantiteIso.
18.1.30Cesplumtantite(Cs,Na)2(Pb,Sb3+)3Ta8O24Tet.
18.1.31Stibiomicrolite (of Groat et al.)
18.1.32Cesstibtantite
18.1.34BismutotantaliteBi(Ta,Nb)O4Orth.
18.1.36Tantalite-(Mn)Mn2+Ta2O6Orth. mmm (2/m 2/m 2/m) : Pbcn
18.1.37Gerasimovskite(Mn,Ca)(Nb,Ti)5O12 · 9H2OAmor.
18.1.38Tapiolite-(Mn)Mn2+Ta2O6Tet. 4/mmm (4/m 2/m 2/m) : P42/mnm
18.1.39Columbite-(Mn)Mn2+Nb2O6Orth. mmm (2/m 2/m 2/m) : Pbcn
18.1.40WodginiteMn2+Sn4+Ta2O8Mon.
18.1.41Ixiolite(Ta,Nb,Sn,Fe,Mn)4O8Orth.
18.1.42Columbite-(Fe)Fe2+Nb2O6Orth. mmm (2/m 2/m 2/m) : Pbcn
18.1.43Tantalite-(Fe)Fe2+Ta2O6Orth. mmm (2/m 2/m 2/m) : Pbcn
18.1.44ColumbiteOrth. mmm (2/m 2/m 2/m) : Pbcn
18.1.45Tantalite(Mn,Fe)(Ta,Nb)2O6
18.1.46Tapiolite(Fe,Mn)(Ta,Nb)2O6Tet. 4/mmm (4/m 2/m 2/m)
18.1.47Tapiolite-(Fe)Fe2+Ta2O6Tet. 4/mmm (4/m 2/m 2/m) : P42/mnm
18.1.48Columbite-(Mg)(Mg,Fe,Mn)(Nb,Ta)2O6Orth.
18.1.50Strüverite(Ti,Ta,Fe)O2
18.1.51 Staringite(Fe,Mn)x(Ta,Nb)2xSn6-3xO12

Other InformationHide

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 Bismutomicrolite (of Hogarth 1977)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
von Knorring, O. and Mrose, M. E. (1963): Westgrenite [bismutomicrolite] and waylandite, two new bismuth minerals from Uganda. Geol. Soc. Amer. Spec. Paper 73, 256-257. - American Mineralogist 48, 215 (abstract).
Erichsen de Oliveira, O., Rocha Baptista, N. and Baptista, A. (1970): Westgrenita [bismutomicrolite] no pegmatito de Tromba, Estado de Goiás. An. Acad. brasil. Ciénc. 42(1), 41-44 (in Portuguese).
Hogarth, D. D. (1977): Classification and nomenclature of the pyrochlore group. American Mineralogist 62, 403-410, esp. 408.
Anthony, J.W., Bideaux, R.A., Bladh, K.W., and Nichols, M.C. (1997) Handbook of Mineralogy, Volume III. Halides, Hydroxides, Oxides. Mineral Data Publishing, Tucson, AZ, 628pp.: 63.

Internet Links for Bismutomicrolite (of Hogarth 1977)Hide

Localities for Bismutomicrolite (of Hogarth 1977)Hide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- 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). 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Argentina
 
  • Salta Province
    • La Poma department
      • Nevados de Palermo
        • El Quemado district
Galliski et al. (2001) Bismutotantalite from northwestern Argentina: description and crystal structure. Canadian Mineralogist Vol. 39, pp. 103-110.
Brazil
 
  • Goiás
    • Trombas
Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 63
  • Paraíba
    • Borborema mineral province
Specimen in the collection of Richard Gaines [Rock Currier 2010]
Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 63
  • Rio Grande do Norte
    • Borborema mineral province
      • Carnaúba dos Dantas
        • Ermo
Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 63
      • Equador
      • Parelhas
Beurlen, H., Da Silva, M.R.R., Thomas, R., Soares, D.R., and Olivier, P. (2008): Mineralium Deposita 43, 207-228.; Beurlen, H.; Müller, A.; Silva, D.; Da Silva, M.R.R. (2011): Petrogenetic significance of LA-ICP-MS trace-element data on quartz from the Borborema Pegmatite Province, northeast Brazil. Mineralogical Magazine 75, 2703-2719.
Canada
 
  • Ontario
    • Kenora District
      • Paterson Lake Area
Tindle, A.G. & Breaks, F.W. (1998) Oxide minerals of the Separation Rapids rare-element granitic pegmatite group, northwestern Ontario. Canadian Mineralogist, 36, 609-635.
Tindle, A.G., Breaks, F.W., and Selway, J.B. (2002) Tourmaline in petalite-subtype gramitic pegmatites: evidence of fractionation and contamination from Pakeagama Lake and Separation Lake areas of northwestern Ontario, Canada. Canadian Mineralogist, 40, 753-788.
China
 
  • Xinjiang
    • Yili Hasake Autonomous Prefecture (Ili Kazakh Autonomous Prefecture)
      • Aletai Prefecture (Altay Prefecture)
        • Fuyun Co. (Koktokay Co.)
http://www.smartminerals.com/cina2004/art_China_localities.htm
Finland
 
  • Uusimaa
    • Myrskylä
Pavel M. Kartashov analytical data 2017, Jyrki Autio specimen
Japan
 
  • Fukuoka prefecture
    • Munakata City
Uehara, S., et al. (2014) Minerals from Kyushu and Yamaguchi. (Fukuoka Mineral Club, 355 pages)
Madagascar
 
  • Amoron'i Mania
    • Ambatofinandrahana
      • Fenoarivo
Pers.com Roy Kristiansen 1996, XRD analysis Smithsonian Institution, USA 1974
Russia
 
  • Sverdlovsk Oblast
    • Rezhevsky District
      • Lipovsk pegmatite field
Igor.V. Pekov, Lyudmila R. Memetova (2008) Minerals of the Lipovka Granite Pegmatites, Central Urals, Russia. Mineralogical Almanac 13:6-45
  • Zabaykalsky Krai
    • Krasnyi Chikoy
      • Malkhan pegmatite field (Malchan; "Malechansk")
[Lapis 1993:1 p13-15]
Uganda (FRL)
 
  • Central Region
    • Wakiso District
      • Busiro Co. (Bushiro Co.)
Am Min 62 (1977), 403; HB3 (1997)
USA
 
  • Wisconsin
    • Dodge Co.
Buchholz, T., A. Falster, A. & W. Simmons (2007) Waylandite, bismuth and associated minerals from the Waterloo Quarry, southern Wisconsin: 34th Rochester Mineralogical Symposium Abstracts: 7-8.
 
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