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Uranmicrolite (of Hogarth 1977)

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Yellowish-brown, greenish-brown, brownish-black
Waxy, Greasy
Crystal System:
Named as a supposed uranium-bearing variety of microlite.
A variety of Microlite Group

No samples described as uranmicrolite (“djalmaite” of Guimarães 1939) (e.g., Baldwin 1989, Rub et al. 1998, Tindle & Breaks 1998, Novák & Černý 1998, Zhang et al. 2004, Breiter et al. 2007, van Lichtervelde et al. 2007, Uher et al. 2007) are rich enough in U to warrant a status as a separate species.

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Classification of Uranmicrolite (of Hogarth 1977)Hide


18 : Niobates and Tantalates
3 : Niobates and tantalates containing U but not rare earths

Physical Properties of Uranmicrolite (of Hogarth 1977)Hide

Waxy, Greasy
Yellowish-brown, greenish-brown, brownish-black
5½ on Mohs scale

Optical Data of Uranmicrolite (of Hogarth 1977)Hide


Crystallography of Uranmicrolite (of Hogarth 1977)Hide

Crystal System:

First Recorded Occurrence of Uranmicrolite (of Hogarth 1977)Hide

Synonyms of Uranmicrolite (of Hogarth 1977)Hide

Other Language Names for Uranmicrolite (of Hogarth 1977)Hide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Zircon6 photos of Uranmicrolite (of Hogarth 1977) associated with Zircon on
Elbaite4 photos of Uranmicrolite (of Hogarth 1977) associated with Elbaite on
Lepidolite3 photos of Uranmicrolite (of Hogarth 1977) associated with Lepidolite on
Fersmite3 photos of Uranmicrolite (of Hogarth 1977) associated with Fersmite on
Xenotime Group2 photos of Uranmicrolite (of Hogarth 1977) associated with Xenotime Group on
Albite2 photos of Uranmicrolite (of Hogarth 1977) associated with Albite on
Quartz1 photo of Uranmicrolite (of Hogarth 1977) associated with Quartz on
Xenotime-(Y)1 photo of Uranmicrolite (of Hogarth 1977) associated with Xenotime-(Y) on
Columbite-(Mn)1 photo of Uranmicrolite (of Hogarth 1977) associated with Columbite-(Mn) on
Stokesite1 photo of Uranmicrolite (of Hogarth 1977) associated with Stokesite on

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

18.3.3Betafite (of Hogarth 1977)A2-mB2X6-wY1+wIso. m3m (4/m 3 2/m) : Fd3m
18.3.4Plumbobetafite (of Hogarth 1977)A2-mB2X6-wY1-n
18.3.8Ashanite(Nb,Ta,U,Fe,Mn)4O8Orth. mmm (2/m 2/m 2/m) : Pban

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 Uranmicrolite (of Hogarth 1977)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Annales Acad. Brasil. Ciencias (1939), 11, 347.
American Mineralogist (1977): 62: 403-410.

Internet Links for Uranmicrolite (of Hogarth 1977)Hide

Localities for Uranmicrolite (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.
  • Salta
    • 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.
  • South Australia
    • Flinders Ranges
      • North Flinders Ranges
        • Mt Babbage area (Inlier)
PA Wulser collection
  • Victoria
    • East Gippsland Shire
      • Omeo
        • Mt Wills Mining District
          • Glen Wills
Personally collected by Ryan Eagle in 2009; Eagle, R. M., Birch, W. D., & McKnight, S. (2015). Phosphate minerals in granitic pegmatites from the Mount Wills District, north-eastern Victoria. Proceedings of the Royal Society of Victoria, 127(2), 55-68.
  • Carinthia
    • Millstatt lake ridge
      • Spittal
        • Lieser ravine
Walter, F. (1998): Exkursion E4 am 27.9.1998 - MinPet 98 (Pörtschach am Wörthersee/Kärnten) - Die Pegmatite des Millstätter See-Rückens. Mitt. Österr. Mineral. Ges. 143, 437-450. []
        • Wolfsberg
G. Niedermayr, I. Praetzel: Mineralien Kärntens, 1995
  • Santa Cruz Department
    • Ñuflo de Chavez Province
      • San Agustín
Alfredo Petrov collection
Brazil (FRL)
  • Minas Gerais
    • Conceição do Mato Dentro
      • São José de Brejaúba
Guimar˜aes, C.P. (1941) Djalmaite, a new radioactive mineral. Amer. Mineral., 26, 343–346.
    • Galiléia
Luis Menezes
    • São João del Rei pegmatite province
      • Nazareno
Fernando R.M. Pires and A. Raphael Cabral (1998) The Volta Grande pegmatites, Minas Gerais, Brazil: an example of rare-element granitic pegmatites exceptionally enriched in lithium and rubidium: Discussion. The Canadian Mineralogist, 36, 1157-1158.
  • Rio Grande do Norte
    • Borborema mineral province
      • Parelhas
Beurlen, H., Da Silva, M.R.R., Thomas, R., Soares, D.R., and Olivier, P. (2008): Mineralium Deposita 43, 207-228.; Beurlen, H., Soares, D. R., Thomas, R., Prado-Borges, L. E., & Castro, C. D. (2005). Mineral chemistry of tantalate species new in the Borborema Pegmatitic Province, Northeast Brazil. Anais da Academia Brasileira de Ciências, 77(1), 169-182.
[MinRec 29:196]
Beurlen, H., Da Silva, M.R.R., Thomas, R., Soares, D.R., and Olivier, P. (2008): Mineralium Deposita 43, 207-228.
  • Northwest Territories
    • Tungsten
The Canadian Mineralogist Vol. 41, pp. 139-160 (2003)
  • Ontario
    • Kenora District
      • Pakeagama Lake Area
Andrew G. Tindle, Fred W. Breaks and Julie B. Selway (2002) Tourmaline in petalite-subtype granitic pegmatites; evidence of fractionation and contamination from the Paleagama Lake and Separation Lake areas of northwestern Ontario, Canada. The Canadian Mineralogist 40:753-78
      • 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.
  • Jiangxi Province
    • Ji'an Prefecture
      • Suichuan Co.
Yunhuai Lin and Shiyang Chen (1985): Geology and Prospecting 21(3), 23-31
  • Xinjiang Autonomous Region
    • Yili Hasake Autonomous Prefecture (Ili Kazakh Autonomous Prefecture)
      • Aletai Prefecture (Altay Prefecture)
        • Fuyun Co. (Koktokay Co.)
          • Koktokay pegmatite field (Keketuohai pegmatite field)
            • Altay Mine
Tianren Zou, Xiangchen Zhang, Fuyi Jia, Rucong Wang, Huizhi Cao, and Boqing Wu (1986): Mineral Deposits 5(4), 34-48
Czech Republic
  • Bohemia (Böhmen; Boehmen)
    • Karlovy Vary Region
      • Lázně Kynžvart (Bad Königswart)
Černý, P., Veselovský, F.: Pegmatit Bílý kámen (Weisser Stein) u Kynžvartu. Minerál, 2000, roč. 8, č. 1, s. 10-16.
  • Moravia (Mähren; Maehren)
    • Moravia-Silesia Region
      • Bruntál
        • Praděd (Altvater)
Pauliš P., Kopecký S., Černý P. 2007: Uranové minerály České Republiky a jejich naleziště. 1. část. (Kutna Hora, issue 1)
    • Olomouc Region
      • Šumperk (Mährisch Schönberg)
        • Maršíkov (Marchendorf)
No reference listed
Novák, M., Černý, P.: Přehled minerálů niobu a tantalu z granitických pegmatitů České republiky. Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 1999, roč. 7, s. 117-131.; Novák, M.: Maršíkov - Scheibengraben. In Exkurzní průvodce po mineralogických lokalitách na Sobotínsku. Univerzita Palackého v Olomouci, 2002, Olomouc, s. 38-41.
  • Oromia Region (Oromiya Region)
    • Kenticha pegmatite field
Küster, D., Romer, R. L., Tolessa, D., Zerihun, D., Bheemalingeswara, K., Melcher, F., & Oberthür, T. (2009). The Kenticha rare-element pegmatite, Ethiopia: internal differentiation, U–Pb age and Ta mineralization. Mineralium Deposita, 44(7), 723-750.
  • Western and Inner Finland Region
    • Orivesi
      • Eräjärvi area
Sandström, F. & Lahti, S.I. (2009): Viitaniemipegmatiten i Eräjärvi, Orivesi, Finland. Litiofilen 26 (1): 11-38
  • Lombardy
    • Sondrio Province
      • Valchiavenna
        • Chiavenna
AA. VV., 1996. Collezionare minerali. Hobby & Work.
  • Piedmont
    • Verbano-Cusio-Ossola Province
      • Ossola Valley
        • Trontano
          • Cosasca
Boscardin, M.; Mattioli, G. & Pierini, C. (1982): Mikrolith und Columbite. LAPIS 7 (3), 17-19
        • Vigezzo Valley
          • Craveggia
            • Rio Vasca
AA. VV., 1996. Collezionare minerali. Hobby & Work.
          • Druogno
            • Orcesco
AA. VV., 1996. Collezionare minerali. Hobby & Work.
          • Trontano
            • Pizzo Marcio
Appiani, R., Cini, V., Gentile, P., Mattioli, V., Preite, D., Vignola, P. (1995): Val Vigezzo - I minerali delle albititi. Ed. Linea Due S.r.l., Marnate (Varese), 90 pp.
Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007): MInerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
  • Tuscany
    • Livorno Province
      • Elba Island
        • Campo nell'Elba
Orlandi et al., 1990. Nb-Ta oxides from Elba Island pegmatites. Atti Soc. Tosc. Sci. Nat., Mem., Serie A, 97: 161-173
P. Orlandi, M. Pasero, N. Perchiazzi (1990) - Nb-Ta oxides from Elba Island pegmatites. - Atti Soc. Tosc. Sc. Nat., Mem. serie A, v.97: 161-173.
Orlandi, P., & Pezzotta, F. (1997). Minerali dell'Isola d'Elba. Edizioni Novecento Grafico, Bergamo, 249 pp.
Orlandi, P., & Pezzotta, F. (1997). Minerali dell'Isola d'Elba. Edizioni Novecento Grafico, Bergamo, 249 pp.
  • Honshu Island
    • Kanto Region
      • Ibaraki Prefecture
        • Hitachiohta City
Matsubara et al (1995) Mineralogical Journal, 17, 338-345
  • Eastern Kazakhstan Province (Shyghys Qazaqstan Oblysy; Vostochno-Kazakhstanskaya Oblast')
    • Kalba Range
      • Irtysh River
Pavel M. Kartashov data
  • Antananarivo Province
    • Vakinankaratra Region
      • Sahatany Pegmatite Field (Mt Ibity area)
        • Manandona Valley
Pezzotta, F. (1999): Madagaskar. Das Paradies der Mineralien und Edelsteine. Extra Lapis nr 17, pp 53-54 (german edition)
  • Zambezia Province
    • Alto Ligonha District
Mineralogical Record Vol. 31, p. 489.
  • Braga District
    • Vieira do Minho
      • Anjos
        • Muro Alto Mine
Dias, P. A., Pereira, B., Leal Gomes, C., & Guimarães, F. (2009). Structure and Mineralogy of the Muro Alto Granitic Pegmatite (Vieira Do Minho-Portugal) – Peculiar Assemblages of High-F Hydro-thermal Evolution. Estudos Geológicos, 19(2), 105.
Dias, P. A., Pereira, B., Leal Gomes, C., & Guimarães, F. (2009). Structure and Mineralogy of the Muro Alto Granitic Pegmatite (Vieira Do Minho-Portugal) – Peculiar Assemblages of High-F Hydro-thermal Evolution. Estudos Geológicos, 19(2), 105.
  • Urals Region
    • Middle Urals
      • Sverdlovskaya Oblast'
        • Rezh District
          • Lipovka pegmatite field
Lapis 28(10), 60 (2003); Igor.V. Pekov, Lyudmila R. Memetova (2008) Minerals of the Lipovka Granite Pegmatites, Central Urals, Russia. Mineralogical Almanac 13:6-45
  • Western Province
    • Gatumba District
Bertossa, A., 1967. Inventaire des minéraux du Rwanda. Bulletin du Service Géologique de Rwanda 4, 25-45.; Daltry, V.D.C. and O. von Knorring (1998) Type-Mineralogy of Rwanda with Particular Reference to the Buranga Pegmatite. Geologica Belgica 1:1-9
  • Banská Bystrica Region
    • Banská Bystrica Co.
      • Brusno
Uher, P. ,Černý, P., 1998 : Vzácnoprvková mineralizácia v granitových pegmatitoch Nízkych Tatier. Mineralia Slovaca, 30, 2,93 – 94
  • Bratislava Region
    • Pezinok Co.
      • Pezinok
        • Slnečné Valley
Uher P., Žitňan P., Ozdín D., 2007: Pegmatitic Nb-Ta oxide minerals in alluvial placers from Limbach, Bratislava Massif, Western Carpathians, Slovakia: compositional variations and evolutionary trend. Journal of Geosciences, 52, 1-2, 133-141.
  • Košice Region
    • Rožňava Co.
Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590k
South Africa
  • KwaZulu-Natal Province
    • Uthungulu District
Minerals of South Africa
  • Södermanland
    • Haninge
      • Utö
Otter, B. (2004): Utö-mineralriket. Berg & Mineral. 14 (nr 44), 28-36
  • Alabama
    • Coosa Co.
      • Rockford District
Canadian Mineralogist Vol. 27, pp. 93-105 (1989)
  • California
    • San Diego Co.
      • Mesa Grande District
        • Gem Hill
Fisher, J., E. E. Foord, and G. A. Bricker, 1999. The geology, mineralogy, and history of the Himalaya mine, Mesa Grande, San Diego County, California. California Geology 52(1):3-18.
      • Ramona District
        • Ramona
Foord, Eugene E. et al (1989), Mineralogy and Paragenesis of the Little Three Mine Pegmatites, Ramona District, San Diego County, California. Mineralogical Record, 20(2): p. 123.
  • Connecticut
    • Hartford Co.
      • Glastonbury
        • South Glastonbury
    • Litchfield Co.
      • Watertown
        • State route 8
Bill Barret Coll. Specimen, Minerals identified by Jeremy Zolan
    • Middlesex Co.
      • East Hampton (Chatham)
Harold Moritz collection. Former Bruce Jarnot collection.
  • North Carolina
    • Mitchell Co.
      • Spruce Pine District
        • Spruce Pine
          • Greasy Creek Township
Wilson,W.F and McKenzie,B.J.,1985,Some Mineral collecting sites in North Carolina;Rocks and Minerals,Vol.60,pg.84-93
Warner,Richard.,Poterala,Stephen and Fleisher,Chris (2008) A Note On Uranium Minerals From The Spruce Pine Area,North Carolina: Carolina Geological Society,2008,Annual Meeting,Spruce Pine Mining District
  • 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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