Protasite

A valid IMA mineral species

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Photos of Protasite (5)

Protasite GallerySearch Photos of Protasite

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Protasite, etc.

Shinkolobwe Mine, Shinkolobwe, Kambove Territory, Haut-Katanga, DR Congo

Protasite

Rendena Valley uranium prospects, Monte Toff, Bocenago, Trento Province, Trentino-Alto Adige, Italy

Protasite

Rendena Valley uranium prospects, Monte Toff, Bocenago, Trento Province, Trentino-Alto Adige, Italy

Protasite, etc.

Shinkolobwe Mine, Shinkolobwe, Kambove Territory, Haut-Katanga, DR Congo

Protasite

Rendena Valley uranium prospects, Monte Toff, Bocenago, Trento Province, Trentino-Alto Adige, Italy

Protasite

Rendena Valley uranium prospects, Monte Toff, Bocenago, Trento Province, Trentino-Alto Adige, Italy

Protasite, etc.

Shinkolobwe Mine, Shinkolobwe, Kambove Territory, Haut-Katanga, DR Congo

Protasite

Rendena Valley uranium prospects, Monte Toff, Bocenago, Trento Province, Trentino-Alto Adige, Italy

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About ProtasiteHide

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Formula:

Ba(UO₂)₃O₃(OH)₂ · 3H₂O

Colour:

Light orange, bright orange

Lustre:

Sub-Adamantine

Specific Gravity:

5.827 (Calculated)

Crystal System:

Monoclinic

Name:

Named for Professor Jean Protas (1932–2007), French mineralogist, University of Nancy, Nancy, France, who first synthesized the compound, and for his work with uranium oxide minerals.

Type Locality:

ⓘ Shinkolobwe Mine, Shinkolobwe, Kambove Territory, Haut-Katanga, DR Congo

This page provides mineralogical data about Protasite.

Unique IdentifiersHide

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Mindat ID:

3289

Long-form identifier:

mindat:1:1:3289:2

GUID
(UUID V4):

ab83edca-a2ea-4b12-a1cb-c785315554b9

Classification of ProtasiteHide

Mineral SymbolsHide

Physical Properties of ProtasiteHide

Optical Data of ProtasiteHide

Type:

Biaxial (-)

RI values:

n_α = 1.780 n_β = 1.800 - 1.830 n_γ = 1.820 - 1.830

2V:

Measured: 60° to 81°

Max Birefringence:

δ = 0.040 - 1.830

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Surface Relief:

Very High

Dispersion:

r > v

Pleochroism:

Not Visible

Comments:

None for Y or Z.

Chemical Properties of ProtasiteHide

Crystallography of ProtasiteHide

Crystal StructureHide

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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)
0001134	Protasite	Pagoaga M K, Appleman D E, Stewart J M (1987) Crystal structures and crystal chemistry of the uranyl oxide hydrates becquerelite, billietite, and protasite American Mineralogist 72 1230-1238		1987	Shinkolobwe mine, Shaba, Zaire	0	293

CIF Raw Data - click here to closedata_global _chemical_name_mineral 'Protasite' loop_ _publ_author_name 'Pagoaga M K' 'Appleman D E' 'Stewart J M' _journal_name_full 'American Mineralogist' _journal_volume 72 _journal_year 1987 _journal_page_first 1230 _journal_page_last 1238 _publ_section_title ; Crystal structures and crystal chemistry of the uranyl oxide hydrates becquerelite, billietite, and protasite ; _database_code_amcsd 0001134 _chemical_compound_source 'Shinkolobwe mine, Shaba, Zaire' _chemical_formula_sum 'U3 Ba O14' _cell_length_a 12.2949 _cell_length_b 7.2206 _cell_length_c 6.9558 _cell_angle_alpha 90 _cell_angle_beta 90.401 _cell_angle_gamma 90 _cell_volume 617.497 _exptl_crystal_density_diffrn 5.784 _symmetry_space_group_name_H-M 'P 1 n 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,-y,1/2+z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv U1 0.00000 -0.02314 0.00000 ? U2 0.81983 -0.01959 0.45837 ? U3 0.11859 -0.01512 0.52145 ? Ba 0.97749 0.51175 0.32850 ? O101u 0.01700 -0.27800 -0.02700 0.01200 O102u 0.98970 0.23100 0.05600 0.01200 O201u 0.80960 -0.26700 0.50400 0.01200 O202u 0.84180 0.22400 0.39900 0.01200 O301u 0.13370 -0.26400 0.55800 0.01200 O302u 0.10340 0.23300 0.46200 0.01200 O1o 0.97940 -0.09200 0.31800 0.00800 O2o 0.95400 0.00500 -0.30800 0.00800 O3h 0.80860 -0.07400 0.07200 0.01100 O4h 0.19380 -0.07200 0.20300 0.01100 O5o 0.15050 0.02500 -0.16300 0.00800 O6w 0.18700 0.54500 0.15600 0.04000 O7w 0.80200 0.53400 0.06200 0.04000 O8w 0.93400 0.44200 0.72200 0.04000 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 U1 0.00560 0.00600 0.00010 -0.00020 0.00060 0.00020 U2 0.00270 0.00590 0.00260 -0.00050 -0.00020 0.00190 U3 0.00320 0.00570 0.00080 -0.00040 -0.00130 -0.00010 Ba 0.01300 0.00620 0.00880 0.00100 -0.00070 0.00090

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of ProtasiteHide

Synonyms of ProtasiteHide

Other Language Names for ProtasiteHide

Common AssociatesHide

Related Minerals - Strunz-mindat GroupingHide

Other InformationHide

Internet Links for ProtasiteHide

References for ProtasiteHide

Reference List:

Year ⬇Author Title Publisher

Pagoaga, M.K., Appleman, D.E., Stewart, J.M. (1986) A new barium uranyl oxide hydrate mineral, protasite. Mineralogical Magazine: 50: 125-128.

Pagoaga, M.K., Appleman, D.E., Stewart, J.M. (1986) A new barium uranyl oxide hydrate mineral, protasite. Mineralogical Magazine: 50: 125-128.

Hawthorne, F.C., Bladh, K.W., Burke, E.A.J., Grew, E.S., Langley, R.H., Puciewicz, J., Roberts, A.C., Schedler, R.A., Shigley, J.E., Vanko, D.A. (1987) New mineral names. American Mineralogist: 72: 222-230.

Pagoaga, M.K., Appleman, D.E., and Stewart, J.M. (1987) Crystal structures and crystal chemistry of the uranyl oxide hydrates becquerelite, billietite, and protasite. American Mineralogist: 72: 1230-1238.

Burns, P.C. and Hanchar, J.M. (1999) The structure of masuyite, Pb[(UO2)3O3(OH)2](H2O)3, and its relationship to protasite. The Canadian Mineralogist: 37: 1483-1491.

Burns, P. C. (2005) U6+ Minerals and Inorganic Compounds: Insights Into an Expanded Structural Hierarchy of Crystal Structures. The Canadian Mineralogist, 43 (6) 1839-1894 doi:10.2113/gscanmin.43.6.1839

Localities for ProtasiteHide

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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

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- 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.

Brazil
Bahia Caetité ⓘ Lagoa Real province	Pires, F., França, A., & Miano, S. (2014). Topological relations in the U-Si-OH system derived by weathering at Lagoa Real Province, Bahia, Brazil (No. IAEA-CN--216).
DR Congo (TL)
Haut-Katanga Kambove Territory Shinkolobwe ⓘ Shinkolobwe Mine (TL)	Pagoaga, M. Katherine, Appleman, Daniel E., Stewart, James M. (1987) Crystal structures and crystal chemistry of the uranyl oxide hydrates becquerelite, billietite, and protasite. American Mineralogist, 72(11-12), 1230-1238. [1]Deliens, M., Piret, P., Van Der Meersche, E. (1990) Les minéraux secondaires d'uranium du Zaire, Complément 2. 39 pages.pp.4-5 Deliens, M. (1996) Overzicht van de mineralogie van de koper-, kobalt- en uraniumvoorkomens in Zuid-Shaba (Zaïre). Pages 35-49 in: Schatten der Aarde. Van mineraal tot juweel. Tentoonstelling in de abdij Saint-Gérard de Brogne van 27 april tot 27 oktober 1996. Catalogus opgemaakt onder de leiding van R. Warin, AGAB en P. Van hee, MKA (in Dutch).
Germany
Baden-Württemberg Freiburg Region Ortenaukreis Oberwolfach ⓘ Clara Mine	Kolitsch, U., Götzinger, M. (2000) Einige Neufunde aus der Grube Clara im mittleren Schwarzwald: Eulytin, Namibit, Volborthit, Gearksutit, Spertiniit, Monazit-(La), Protasit, Sainfeldit, Cyanotrichit und Vauquelinit. Der Erzgräber, 14 (2) 33-47
Rottweil Schenkenzell Wittichen Böckelsbach valley ⓘ Sophia Mine	54 (in German). Markl, G. & Slotta, C. (2011): Die Uranmineralien des Lagerstättenreviers Wittichen im mittleren Schwarzwald. Lapis 36 (3), 25-37
Italy
Trentino-Alto Adige (Trentino-South Tyrol) Trento Province (Trentino) Bocenago Monte Toff ⓘ Rendena Valley uranium prospects	Campostrini I.(2013): Minerali secondari dei giacimenti uraniferi nelle Arenarie di Val Gardena del Trentino occidentale (Alpi Meridionali, Italia). Studi Trent. Sci. Nat., 93, pagg. 89-114.
Russia
Zabaykalsky Krai Krasnokamensky District Krasnokamensk Strel'tsovskoe Mo-U ore field ⓘ Oktyabr'skoe Mo-U Deposit	(USSR) (Vol. 303, No. 5). Belova, L. N., & Rogova, V. P. (1988, January). First occurence of protasite in the USSR.[A new uranium mineral]. Pervaya nakhodka v SSSR protasita. In Doklady Akademii Nauk SSSR Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 46
Spain
Catalonia Lleida El Pallars Jussà La Vall Fosca La Torre de Cabdella Castell-estaó ⓘ Eureka mine	Joan Abella i Creus (Joanabellacreus@gmail.com) specimens and analyses by EDS and XRD.Identification: XRD, SEM-EDS