Cuprocherokeeite
A valid IMA mineral species
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About Cuprocherokeeite
Formula:
[Pb8Zn3Cu2+(OH)16](SO4)4 · 4H2O
Colour:
light blue
Lustre:
Vitreous
Hardness:
2½
Crystal System:
Monoclinic
Name:
for its relation with cherokeeite
Chemically and structurally related to cherokeeite.
Co-described with its Zn (or rather Zn3Cu-) analogue cherokeeite.
The structures of both species are based on "edge-sharing chains of octahedra, decorated by Pb2+ cations". The latter are "strongly bonded to the chains via short Pb–O bonds". In cuprocherokeeite 1/4 of the octahedral cations is Cu.
Co-described with its Zn (or rather Zn3Cu-) analogue cherokeeite.
The structures of both species are based on "edge-sharing chains of octahedra, decorated by Pb2+ cations". The latter are "strongly bonded to the chains via short Pb–O bonds". In cuprocherokeeite 1/4 of the octahedral cations is Cu.
Unique Identifiers
Mindat ID:
470493
Long-form identifier:
mindat:1:1:470493:1
GUID
(UUID V4):
(UUID V4):
2039d35b-b5a6-487b-95a0-dbf55c9d9940
IMA Classification of Cuprocherokeeite
Approved
IMA Formula:
[Pb8Zn3Cu2+(OH)16](SO4)4 · 4H2O
Classification of Cuprocherokeeite
7.DF.
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
F : With large and medium-sized cations
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
F : With large and medium-sized cations
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Cchk | 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 Cuprocherokeeite
Vitreous
Colour:
light blue
Streak:
very pale bluish-white
Hardness:
2½ on Mohs scale
Tenacity:
Brittle
Cleavage:
Distinct/Good
probable, 2 directions
probable, 2 directions
Fracture:
Irregular/Uneven
Translation gliding:
irregular & curved fracture
Optical Data of Cuprocherokeeite
Type:
Biaxial (+)
RI values:
nα = 1.760(5) nβ = 1.770(5) nγ = 1.800(5)
2V:
Measured: 65° (3)
Max Birefringence:
δ = 0.040
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Very High
Chemistry of Cuprocherokeeite
Mindat Formula:
[Pb8Zn3Cu2+(OH)16](SO4)4 · 4H2O
Chemical Analysis
Empirical formulas:
Sample ID | Empirical Formula |
---|---|
1 | [Pb8.14(Zn2.52Cu2+1.34)(OH)16][(SO4)3.07(S2O3)0.93]·4H2O |
Sample references:
ID | Locality | Reference | Notes |
---|---|---|---|
1 | Redmond Mine, Waterville Lake, Haywood County, North Carolina, USA |
Crystallography of Cuprocherokeeite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 12.6828(5) Å, b = 9.4629(5) Å, c = 14.7876(8) Å
β = 94.798(4)°
β = 94.798(4)°
Ratio:
a:b:c = 1.34 : 1 : 1.563
Unit Cell V:
1,768.53 ų (Calculated from Unit Cell)
Comment:
Space group P21/n
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
5.27 Å | (100) |
4.53 Å | (48) |
3.431 Å | (34) |
3.315 Å | (24) |
3.130 Å | (27) |
3.081 Å | (68) |
2.924 Å | (26) |
2.435 Å | (22) |
Type Occurrence of Cuprocherokeeite
General Appearance of Type Material:
prisms or blades, to ca. 1 mm
Place of Conservation of Type Material:
Cotype material is deposited in the collections of the Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA, catalogue numbers 76272, 76273, and 76274
Geological Setting of Type Material:
"highly unusual secondary assemblage that comprises a variety of rare Pb-Zn-Cu sulfates, thiosulfates, and carbonates"
Synonyms of Cuprocherokeeite
Related Minerals - Strunz-mindat Grouping
7.DF. | Aldridgeite | (Cd,Ca)(Cu,Zn)4(SO4)2(OH)6 · 3H2O |
7.DF. | Chromschieffelinite | Pb10Te6+6O20(OH)14(CrO4)(H2O)5 |
7.DF. | Alcaparrosaite | K3Ti4+Fe3+(SO4)4O(H2O)2 |
7.DF. | Bairdite | Pb2Cu2+4Te6+2O10(OH)2(SO4) · H2O |
7.DF. | Carlsonite | (NH4)5Fe3+3O(SO4)6 · 7H2O |
7.DF. | Ammoniomathesiusite | (NH4)5(UO2)4(SO4)4(VO5) · 4H2O |
7.DF. | Erssonite | Mg7Fe3+2(OH)18[Ca(H2O)6](SO4)2 · 12H2O |
7.DF. | Flaggite | Pb4Cu2+4Te6+2(SO4)2O11(OH)2(H2O) |
7.DF. | Poellmannite | Ca6Al3(OH)18[Na(H2O)6](SO4)2 · 6H2O |
7.DF. | Haywoodite | [Pb(H2O)10][Zn12(OH)20(H2O)(SO4)3] |
7.DF. | Cherokeeite | [Pb2Zn(OH)4](SO4) · H2O |
7.DF. | Tzeferisite | CaZn8(SO4)2(OH)12Cl2(H2O)9 |
7.DF.05 | Uklonskovite | NaMg(SO4)F · 2H2O |
7.DF.10 | Kainite | KMg(SO4)Cl · 3H2O |
7.DF.10 | Kaliochalcite | KCu2(SO4)2[(OH)(H2O)] |
7.DF.15 | Natrochalcite | NaCu2(SO4)2(OH) · 2H2O |
7.DF.17 | Unnamed (Ba-Sb Silicate-Sulphate-Hydroxide-Hydrate) | Ba3Sb5+[(Si,S)O3(OH)]2(OH,O)6 · 3H2O |
7.DF.17 | Genplesite | Ca3Sn(SO4)2(OH)6 · 3H2O |
7.DF.20 | Metasideronatrite | Na2Fe(SO4)2(OH) · H2O |
7.DF.20 | Sideronatrite | Na2Fe(SO4)2(OH) · 3H2O |
7.DF.25 | Despujolsite | Ca3Mn4+(SO4)2(OH)6 · 3H2O |
7.DF.25 | Fleischerite | Pb3Ge(SO4)2(OH)6 · 3H2O |
7.DF.25 | Schaurteite | Ca3Ge(SO4)2(OH)6 · 4H2O |
7.DF.25 | Mallestigite | Pb3Sb5+(SO4)(AsO4)(OH)6 · 3H2O |
7.DF.30 | Slavíkite | (H3O+)3Mg6Fe15(SO4)21(OH)18 · 98H2O |
7.DF.35 | Metavoltine | K2Na6Fe2+Fe3+6O2(SO4)12 · 18H2O |
7.DF.40 | Lannonite | Mg2Ca4Al4(SO4)8F8 · 24H2O |
7.DF.40 | Vlodavetsite | AlCa2(SO4)2F2Cl · 4H2O |
7.DF.45 | Peretaite | Ca(SbO)4(SO4)2(OH)2 · 2H2O |
7.DF.50 | Gordaite | NaZn4(SO4)(OH)6Cl · 6H2O |
7.DF.50 | Calamaite | Na2TiO(SO4)2 · 2H2O |
7.DF.52 | Scordariite | K8(Fe3+0.67◻0.33)[Fe3+3O(SO4)6]2 · 14H2O |
7.DF.52 | Huizingite-(Al) | [(NH4)9(SO4)2][(Al,Fe3+)3(OH)2(H2O)4(SO4)6] |
7.DF.55 | Clairite | (NH4)2Fe3(SO4)4(OH)3 · 3H2O |
7.DF.55 | Giacovazzoite | K5Fe3+3O(SO4)6 · 10H2O |
7.DF.57 | Magnanelliite | K3Fe3+2(SO4)4(OH)(H2O)2 |
7.DF.60 | Arzrunite | Cu4Pb2(SO4)(OH)4Cl6 · 2H2O (?) |
7.DF.60 | Evdokimovite | Tl4(VO)3(SO4)5(H2O)5 |
7.DF.62 | Bridgesite-(Ce) | CaCe2Cu6(SO4)4(OH)12 · 8H2O |
7.DF.65 | Elyite | Pb4Cu(SO4)O2(OH)4 · H2O |
7.DF.70 | Lautenthalite | PbCu4(SO4)2(OH)6 · 3H2O |
7.DF.70 | Yecoraite | Fe3+3Bi5(Te6+O4)2(Te4+O3)O9 · 9H2O |
7.DF.75 | Riomarinaite | Bi(SO4)(OH) · H2O |
7.DF.80 | Dukeite | Bi3+24Cr6+8O57(OH)6 · 3H2O |
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.
Internet Links for Cuprocherokeeite
mindat.org URL:
https://www.mindat.org/min-470493.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
References for Cuprocherokeeite
Localities for Cuprocherokeeite
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.
USA (TL) | |
| Miyawaki et al. (2022) |
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Redmond Mine, Waterville Lake, Haywood County, North Carolina, USA