Eurekadumpite
A valid IMA mineral species
This page kindly sponsored by Tony Nikischer
About Eurekadumpite
Centennial Eureka mine tailings
Centennial Eureka Mine, Eureka, Tintic Mining District, Juab County, Utah, USA
Centennial Eureka Mine, Eureka, Tintic Mining District, Juab County, Utah, USA
Formula:
(Cu,Zn)16(TeO3)2(AsO4)3Cl(OH)18 · 7H2O
Colour:
Bright and deep blue-green to turquoise-coloured
Lustre:
Silky
Hardness:
2½ - 3
Specific Gravity:
3.76
Crystal System:
Monoclinic
Name:
Named after the type locality, the dump of the Centennial Eureka mine.
New structure type. Unique combination of elements.
Unique Identifiers
Mindat ID:
39785
Long-form identifier:
mindat:1:1:39785:0
GUID
(UUID V4):
(UUID V4):
81d80d8a-9e99-4b5e-b57e-1fc49aabf927
IMA Classification of Eurekadumpite
Approved
IMA Formula:
(Cu,Zn)16(Te4+O3)2(AsO4)3Cl(OH)18 · 7H2O
Approval year:
2009
First published:
2010
Classification of Eurekadumpite
4.JN.35
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
J : Arsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodates
N : Tellurites with additional anions, with H2O
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
J : Arsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodates
N : Tellurites with additional anions, with H2O
34.8.10.
34 : SELENITES, TELLURITES AND SULFITES
8 : Compound Selenites, Tellurites and Sulfites
34 : SELENITES, TELLURITES AND SULFITES
8 : Compound Selenites, Tellurites and Sulfites
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 |
|---|---|---|
| Eur | 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 Eurekadumpite
Silky
Transparency:
Transparent, Translucent
Comment:
Silky on the surface of the aggregates and nacreous on the separate lamellas
Colour:
Bright and deep blue-green to turquoise-coloured
Streak:
Light turquoise-coloured
Hardness:
2½ - 3 on Mohs scale
Tenacity:
Flexible
Cleavage:
Perfect
on {010}
on {010}
Fracture:
Micaceous
Density:
3.76(2) g/cm3 (Measured) 3.826 g/cm3 (Calculated)
Optical Data of Eurekadumpite
Type:
Biaxial (-)
RI values:
nα = 1.690(1) nβ = 1.775(5) nγ = 1.775(5)
2V:
Measured: 10° (5)
Max Birefringence:
δ = 0.085
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
Pleochroism:
Strong
Comments:
X = light turquoise-coloured, Y = Z = deep blue-green
Chemistry of Eurekadumpite
Mindat Formula:
(Cu,Zn)16(TeO3)2(AsO4)3Cl(OH)18 · 7H2O
Crystallography of Eurekadumpite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P2/m
Setting:
P2/m
Cell Parameters:
a = 8.28(3) Å, b = 18.97(2) Å, c = 7.38(2) Å
β = 121.3(6)°
β = 121.3(6)°
Ratio:
a:b:c = 0.436 : 1 : 0.389
Unit Cell V:
990 ų
Z:
1
Morphology:
Pseudohexagonal or rounded lamellas with the main form {010}.
Comment:
Space group P2/m, P2 or Pm
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 18.92 Å | (100) |
| 9.45 Å | (19) |
| 4.716 Å | (10) |
| 4.111 Å | (13) |
| 3.777 Å | (24) |
| 2.692 Å | (15) |
| 2.524 Å | (41) |
| 1.558 Å | (22) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47d : [Arsenates, antimonates, selenates, bismuthinates] | |
| 47e : [Vanadates, chromates, manganates] | |
| 47g : [Halogen-bearing surface weathering minerals] |
Type Occurrence of Eurekadumpite
General Appearance of Type Material:
Separate compact spherulites (more frequent hemispheres) and rosettes up to 1 mm in diameter.
Place of Conservation of Type Material:
Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow, Russia (3962/1);
Smithsonian Museum of Natural History, Washington, D.C., USA (174877);
American Museum of Natural History, New York City, USA (112206).
Smithsonian Museum of Natural History, Washington, D.C., USA (174877);
American Museum of Natural History, New York City, USA (112206).
Geological Setting of Type Material:
Polymetallic oxide zone material on mine dump
Associated Minerals at Type Locality:
Reference:
Pekov, I.V., Chukanov, N.V., Zadov, A.E., Roberts, A.C., Jensen, M.C., Zubkova, N.V., Nikischer, A.J. (2010) Eurekadumpite, (Cu,Zn)16(TeO3)2(AsO4)3Cl(OH)18·7H2O, a new hypergene mineral. Zapiski Rossiyskogo Mineralogicheskogo Obshchestva: 139(4): 26-35.
Synonyms of Eurekadumpite
Common Associates
Associated Minerals Based on Photo Data:
| 44 photos of Eurekadumpite associated with Quartz | SiO2 |
| 15 photos of Eurekadumpite associated with Mcalpineite | Cu3(Te6+O6) |
| 7 photos of Eurekadumpite associated with Dugganite | Pb3Zn3(AsO4)2(TeO6) |
| 7 photos of Eurekadumpite associated with Malachite | Cu2(CO3)(OH)2 |
| 7 photos of Eurekadumpite associated with Leisingite | Cu2MgTe6+O6 · 6H2O |
| 5 photos of Eurekadumpite associated with Xocomecatlite | Cu3(TeO4)(OH)4 |
| 4 photos of Eurekadumpite associated with Goethite | α-Fe3+O(OH) |
| 4 photos of Eurekadumpite associated with Zincospiroffite | Zn2Te4+3O8 |
| 3 photos of Eurekadumpite associated with Goldfieldite | (Cu4◻2)(Cu4Cu+2)Te4S12S |
| 3 photos of Eurekadumpite associated with Azurite | Cu3(CO3)2(OH)2 |
Related Minerals - Strunz-mindat Grouping
| 4.JN. | Tombstoneite | (Ca0.5Pb0.5)Pb3Cu2+6Te6+2O6(Te4+O3)6(Se4+O3)2(SO4)2 · 3H2O |
| 4.JN. | Ozernovskite | Fe3+4(Te4+O4)(Te4+O3)4 · 7H2O |
| 4.JN.05 | Sonoraite | Fe3+(TeO3)(OH) · H2O |
| 4.JN.10 | Poughite | Fe3+2(TeO3)2(SO4)(H2O)2 · H2O |
| 4.JN.15 | Cesbronite | Cu2+3Te6+O4(OH)4 |
| 4.JN.20 | Eztlite | Pb2+2Fe3+3(Te4+ O3)3(SO4)O2Cl |
| 4.JN.30 | Juabite | CaCu10(TeO3)4(AsO4)4(OH)2 · 4H2O |
| 4.JN.40 | Tamboite | Fe3+3(OH)(H2O)2(SO4)(Te4+O3)3(Te4+O(OH)2)(H2O)3 |
| 4.JN.40 | Metatamboite | Fe3+3(OH)(H2O)2(SO4)(Te4+O3)3(Te4+O(OH)2)(H2O) |
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 Eurekadumpite
mindat.org URL:
https://www.mindat.org/min-39785.html
Please feel free to link to this page.
Please feel free to link to this page.
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External Links:
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References for Eurekadumpite
Reference List:
Localities for Eurekadumpite
symbol to view information about a locality.
The 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).
All localities listed without proper references should be considered as questionable.
USA | |
| Collected Jan. 2021 by Michael J. ... |
| Collected Jan. 2021 by Michael J. ... | |
| Pekov et al. (2010) +1 other reference |
| Collected by and in the collection of ... +1 other reference |
| 66. [p. 49] +1 other reference | |
| Collected by and in the collections of ... | |
| Collected by and in the collection of ... |
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Upper dumps, North Star Mine, Mammoth, Tintic Mining District, Juab County, Utah, USA