Franksousaite (original) (raw)
A valid IMA mineral species
About FranksousaiteHide
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Formula:
PbCu(Se6+O4)(OH)2
Specific Gravity:
5.64 (Calculated)
Crystal System:
Monoclinic
Name:
Named in honour of Mr. Francis (Frank) X. Sousa (b. 1951), of Tuscon, Arizona, USA. Frank's interest in minerals began at age 9 and he started collecting minerals, especially Pb-bearing minerals, in his teenage years. He is a strong promoter of mineral collecting and is a dedicated volunteer, including at multiple Arizona museums.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:55765:6
466c8b89-f4fc-4f68-9d0c-d4931518337a
IMA Classification of FranksousaiteHide
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Type description reference:
Yang, Hexiong, McGlasson, James A., Gibbs, Ronald B., Downs, Robert T. (2022) Franksousaite, PbCu(Se6+O4)(OH)2, the Se6+ analogue of linarite, a new mineral from the El Dragón mine, Potosí, Bolivia. Mineralogical Magazine, 86 (5) 792-798 doi:10.1180/mgm.2022.90
Classification of FranksousaiteHide
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7.BC.
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H2O
C : With medium-sized and large cations
Mineral SymbolsHide
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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Fns | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of FranksousaiteHide
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Cleavage:
None Observed
Cleavage could not be determined due to the small crystal size. By its structural analogue to linarite, it should have perfect cleavage on {100}.
Density:
5.64 g/cm3 (Calculated)
Chemistry of FranksousaiteHide
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Mindat Formula:
PbCu(Se6+O4)(OH)2
Crystallography of FranksousaiteHide
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Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 9.8208(3) Å, b = 5.7340(2) Å, c = 4.7498(1) Å
β = 102.683(2)°
Ratio:
a:b:c = 1.713 : 1 : 0.828
Unit Cell V:
260.95 ų (Calculated from Unit Cell)
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 9.548 Å | (22) |
| 4.917 Å | (24) |
| 4.578 Å | (35) |
| 3.602 Å | (60) |
| 3.193 Å | (100) |
| 3.150 Å | (50) |
| 2.621 Å | (21) |
| 1.828 Å | (21) |
Type Occurrence of FranksousaiteHide
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General Appearance of Type Material:
Prismatic crystals included in colourless anglesite. Individual crystals of franksousaite are found up to 0.05 × 0.02 × 0.02 mm.
Place of Conservation of Type Material:
Collections of (1) the University of Arizona Gem and Mineral Museum, 115 N Church Ave., Tucson, AZ 85701, USA, catalogue number 22713 (holotype), and (2) the RRUFF Project, deposition number R210012 (cotype).
Geological Setting of Type Material:
Telethermal deposit consisting of a single selenide vein hosted in sandstones and shales.
Associated Minerals at Type Locality:
Synonyms of FranksousaiteHide
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Relationship of Franksousaite to other SpeciesHide
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Other Members of this group:
Common AssociatesHide
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Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
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| 7.BC. | Adranosite-(Fe) | (NH4)4NaFe3+2(SO4)4Cl(OH)2 | Tet. 4/m m m _(_4/_m_2/_m_2/m ) : _I_41/a c d |
|---|---|---|---|
| 7.BC. | Adranosite | (NH4)4NaAl2(SO4)4Cl(OH)2 | Tet. 4/m m m _(_4/_m_2/_m_2/m ) : _I_41/a c d |
| 7.BC. | D'Ansite-(Mn) | Na21Mn2+(SO4)10Cl3 | Iso. 43_m_ : I_43_d |
| 7.BC. | Agaite | Pb3CuTeO5(OH)2(CO3) | Orth. m _m_2 : P c _a_21 |
| 7.BC. | D'Ansite-(Fe) | Na21Fe2+(SO4)10Cl3 | Iso. 43_m_ : I_43_d |
| 7.BC. | Acmonidesite | (NH4,K,Pb)8NaFe2+4(SO4)5Cl8 | Orth. 222 : _C_2221 |
| 7.BC. | Backite | Pb2AlTeO6Cl | Trig. 32 : _P_312 |
| 7.BC. | Hagstromite | Pb8Cu2+(Te6+O6)2(CO3)Cl4 | Orth. m m m _(_2/_m_2/_m_2/m ) : I b a m |
| 7.BC. | Wildcatite | CaFe3+Te6+O5(OH) | Trig. 3_m_ _(_32/m ) : P_31_m |
| 7.BC. | Zincochenite | Pb4Zn(OH)6(SO4)2 | Tric. 1 : _P_1 |
| 7.BC. | Viskontite | Pb5Cu2(SO4)3(SeO3)(OH)6 | Orth. m _m_2 : P m _n_21 |
| 7.BC. | Chromviskontite | Pb5Cu2(CrO4)3(SeO3)(OH)6 | Orth. m _m_2 : P m _n_21 |
| 7.BC.05 | D'Ansite | Na21Mg(SO4)10Cl3 | Iso. 43_m_ : I_43_m |
| 7.BC.07 | Apatelite | Fe3(SO4)2(OH)5 · 0.5H2O | |
| 7.BC.07 | Unnamed (Ba-Fe Vanadate) | Ba, Fe, V, O, H | |
| 7.BC.10 | Alunite | KAl3(SO4)2(OH)6 | Trig. 3_m_ : R_3_m |
| 7.BC.10 | Ammonioalunite | (NH4)Al3(SO4)2(OH)6 | Trig. |
| 7.BC.10 | Ammoniojarosite | (NH4)Fe3+3(SO4)2(OH)6 | Trig. 3_m_ : R_3_m |
| 7.BC.10 | Argentojarosite | AgFe3+3(SO4)2(OH)6 | Trig. 3_m_ : R_3_m |
| 7.BC.10 | Beaverite-(Cu) | Pb(Fe3+2Cu)(SO4)2(OH)6 | Trig. 3_m_ _(_32/m ) : R_3_m |
| 7.BC.10 | Dorallcharite | TlFe3+3(SO4)2(OH)6 | Trig. 3_m_ _(_32/m ) : R_3_m |
| 7.BC.10 | Huangite | Ca0.5Al3(SO4)2(OH)6 | Trig. 3_m_ _(_32/m ) : R_3_m |
| 7.BC.10 | Hydroniumjarosite | (H3O)Fe3+3(SO4)2(OH)6 | Trig. 3_m_ _(_32/m ) : R_3_m |
| 7.BC.10 | Jarosite | KFe3+3(SO4)2(OH)6 | Trig. 3_m_ _(_32/m ) : R_3_m |
| 7.BC.10 | Natroalunite-2c | (Na,Ca0.5,K)Al3(SO4)2(OH)6 | Trig. 3_m_ _(_32/m ) : R_3_m |
| 7.BC.10 | Natroalunite | NaAl3(SO4)2(OH)6 | Trig. 3_m_ : R_3_m |
| 7.BC.10 | Natrojarosite | NaFe3(SO4)2(OH)6 | Trig. 3_m_ : R_3_m |
| 7.BC.10 | Osarizawaite | Pb(Al2Cu2+)(SO4)2(OH)6 | Trig. 3_m_ _(_32/m ) : R_3_m |
| 7.BC.10 | Plumbojarosite | Pb0.5Fe3+3(SO4)2(OH)6 | Trig. 3_m_ _(_32/m ) : R_3_m |
| 7.BC.10 | Schlossmacherite | (H3O)Al3(SO4)2(OH)6 | Trig. 3_m_ _(_32/m ) : R_3_m |
| 7.BC.10 | Walthierite | Ba0.5Al3(SO4)2(OH)6 | Trig. |
| 7.BC.10 | Beaverite-(Zn) | Pb(Fe3+2Zn)(SO4)2(OH)6 | Trig. 3_m_ _(_32/m ) : R_3_m |
| 7.BC.10 | Karlseifertite | Pb(Ga2Ge)(AsO4)2(OH)6 | Trig. 3_m_ _(_32/m ) : R_3_m |
| 7.BC.15 | Ye'elimite | Ca4Al6(SO4)O12 | Iso. 432 : _I_4132 |
| 7.BC.20 | Atlasovite | K(BiO)Cu6Fe3+(SO4)5O3Cl | Tet. 4/m m m _(_4/_m_2/_m_2/m ) : _P_4/n c c |
| 7.BC.20 | Nabokoite | KCu7(SO4)5(Te4+O3)OCl | Tet. 4/m m m _(_4/_m_2/_m_2/m ) : _P_4/n c c |
| 7.BC.20 | Puninite | Na2Cu3O(SO4)3 | Mon. 2/m : _B_2/b |
| 7.BC.25 | Chlorothionite | K2Cu(SO4)Cl2 | Orth. m m m _(_2/_m_2/_m_2/m ) : P n m a |
| 7.BC.30 | Euchlorine | KNaCu3(SO4)3O | Mon. 2/m |
| 7.BC.30 | Fedotovite | K2Cu3(SO4)3O | Mon. 2/m : _B_2/b |
| 7.BC.35 | Kamchatkite | KCu3(SO4)2OCl | Orth. m m m _(_2/_m_2/_m_2/m ) : P n m a |
| 7.BC.40 | Piypite | K4Cu4O2(SO4)4 · (Na,Cu)Cl | Tet. 4 : _I_4 |
| 7.BC.45 | Klyuchevskite | K3Cu3(Fe3+,Al)(SO4)4O2 | Mon. 2 |
| 7.BC.45 | Alumoklyuchevskite | K3Cu3(Al,Fe3+)(SO4)4O2 | Tric. 1 : _P_1 |
| 7.BC.45 | Belousovite | KZn(SO4)Cl | Mon. 2/m : _P_21/b |
| 7.BC.47 | Müllerite | Pb2Fe3+(Te6+O6)Cl | Trig. 32 : _P_3112 |
| 7.BC.50 | Caledonite | Pb5Cu2(SO4)3(CO3)(OH)6 | Orth. m _m_2 : P m _n_21 |
| 7.BC.50 | Elasmochloite | Na3Cu6BiO4(SO4)5 | Mon. 2/m |
| 7.BC.52 | Eleomelanite | (K2Pb)Cu4O2(SO4)4 | Mon. 2/m |
| 7.BC.55 | Wherryite | Pb7Cu2(SO4)4(SiO4)2(OH)2 | Mon. 2/m : _B_2/m |
| 7.BC.55 | Falgarite | K4(VO)3(SO4)5 | Mon. 2/m : _B_2/b |
| 7.BC.57 | Krasheninnikovite | KNa2CaMg(SO4)3F | Hex. 6/m m m _(_6/_m_2/_m_2/m ) : _P_63/m c m |
| 7.BC.60 | Mammothite | Pb6Cu4AlSb5+O2(OH)16Cl4(SO4)2 | Mon. 2 : _B_2 |
| 7.BC.60 | Wulffite | K3NaCu4O2(SO4)4 | Orth. m _m_2 |
| 7.BC.60 | Parawulffite | K5Na3Cu8O4(SO4)8 | Mon. 2/m : _P_2/b |
| 7.BC.62 | Shuvalovite | K2(Ca2Na)(SO4)3F | Orth. m m m _(_2/_m_2/_m_2/m ) : P n m a |
| 7.BC.65 | Linarite | PbCu(SO4)(OH)2 | Mon. 2/m : _P_21/m |
| 7.BC.65 | Schmiederite | Pb2Cu2(Se6+O4)(Se4+O3)(OH)4 | Mon. 2/m : _P_21/m |
| 7.BC.65 | Munakataite | Pb2Cu2(Se4+O3)(SO4)(OH)4 | Mon. 2/m : _P_21/m |
| 7.BC.65 | Therasiaite | (NH4)3KNa2Fe2+Fe3+(SO4)3Cl5 | Mon. m : B b |
| 7.BC.65 | Saccoite | Ca2Mn3+2F(OH)8 · 0.5(SO4) | Tet. 4/m m m _(_4/_m_2/_m_2/m ) : _P_4/n c c |
| 7.BC.70 | Chenite | Pb4Cu(SO4)2(OH)6 | Tric. 1 : _P_1 |
| 7.BC.75 | Krivovichevite | Pb3Al(OH)6(SO4)(OH) | Trig. 3_m_ : R_3_c |
| 7.BC.80 | Anhydrokainite | KMg(SO4)Cl |
Other InformationHide
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Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for FranksousaiteHide
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References for FranksousaiteHide
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Reference List:
Yang, Hexiong, McGlasson, James A., Gibbs, Ronald B., Downs, Robert T. (2022) Franksousaite, PbCu(Se6+O4)(OH)2, the Se6+ analogue of linarite, a new mineral from the El Dragón mine, Potosí, Bolivia. Mineralogical Magazine, 86 (5) 792-798 doi:10.1180/mgm.2022.90
Localities for FranksousaiteHide
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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.
| Bolivia (TL) | |
|---|---|
| Potosí Antonio Quijarro Province Porco Municipality ⓘ El Dragón mine (TL) | Miyawaki et al. (2022) +1 other reference |