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Dugganite
A valid IMA mineral species
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About Dugganite
Formula:
Pb3Zn3(AsO4)2(TeO6)
May be Sb-bearing.
Colour:
White, green
Lustre:
Adamantine
Hardness:
3
Specific Gravity:
6.33
Crystal System:
Trigonal
Member of:
Name:
Named in 1978 in honor of Marjorie Duggan [February 18, 1927 New York, New York, USA - April 9, 2002 Tucson, Arizona, USA], analytical chemist for the Phelps Dodge mining company. Duggan discovered the first existence of Te6+ in Nature.
Type Locality:
Isostructural with:
Unique Identifiers
Mindat ID:
1326
Long-form identifier:
mindat:1:1:1326:6
Similar Names
| Diagonite | A synonym of Brewsterite Subgroup | |
| Digenite | A valid IMA mineral species - grandfathered | Cu9S5 |
| Tucanite | A synonym of Scarbroite |
IMA Classification of Dugganite
Classification of Dugganite
8.DL.20
8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
L : With large and medium-sized cations, (OH, etc.):RO4 = 2:1
8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
L : With large and medium-sized cations, (OH, etc.):RO4 = 2:1
43.2.5.1
43 : COMPOUND PHOSPHATES, ETC.
2 : Anhydrous Normal Compound Phosphates, etc·
43 : COMPOUND PHOSPHATES, ETC.
2 : Anhydrous Normal Compound Phosphates, etc·
28.4.10
28 : Selenites, Selenates, Tellurites, and Tellurates
4 : Tellurates
28 : Selenites, Selenates, Tellurites, and Tellurates
4 : Tellurates
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 for Standard |
|---|---|---|
| Dug | 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 Dugganite
Adamantine
Transparency:
Translucent
Colour:
White, green
Streak:
White
Hardness:
3 on Mohs scale
Tenacity:
Very brittle
Cleavage:
Poor/Indistinct
On {1120}.
On {1120}.
Density:
6.33(15) g/cm3 (Measured) 6.33 g/cm3 (Calculated)
Optical Data of Dugganite
Type:
Uniaxial (-)
RI values:
nω = 1.977 nε = 1.967
Max. Birefringence:
δ = 0.010
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Very High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Interference Figure:
This shows the idealized uniaxial interference figure - the conoscopic
(convergent-light, Bertrand-lens-in) view, for a grain cut with the optic axis
centred and vertical. The coloured rings are isochromatics, computed with the
same physics as the Michel-Lévy bar above; the dark cross is the isogyre.
For a genuinely uniaxial mineral viewed this way, that cross stays perfectly stationary if you rotate the stage - unlike a biaxial mineral, where it splits apart on rotation. That invariance is itself the standard diagnostic test for telling uniaxial and biaxial minerals apart at the microscope.
For a genuinely uniaxial mineral viewed this way, that cross stays perfectly stationary if you rotate the stage - unlike a biaxial mineral, where it splits apart on rotation. That invariance is itself the standard diagnostic test for telling uniaxial and biaxial minerals apart at the microscope.
Chemistry of Dugganite
Mindat Formula:
Pb3Zn3(AsO4)2(TeO6)
May be Sb-bearing.
May be Sb-bearing.
Element Weights:
Crystallography of Dugganite
Crystal System:
Trigonal
Class (H-M):
32 - Trapezohedral
Space Group:
P321
Cell Parameters:
a = 8.460(2) Å, c = 5.206(2) Å
Ratio:
a:c = 1 : 0.615
Unit Cell V:
322.6 ų
Z:
1
Morphology:
Type material: Slightly curved, stubby prisms, with a length to width ratio near 2:1.
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
View
CIF File Best | x | y | z | a | b | c
CIF File Best | x | y | z | a | b | c
Rotation
Stop | Start
Stop | Start
Labels
Console Off | On | Grey | Yellow
Console Off | On | Grey | Yellow
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) |
|---|---|---|---|---|---|---|---|
| 0005548 | Dugganite | Lam A E, Groat L A, Ercit T S (1998) The crystal structure of dugganite, Pb3Zn3TeAs2O14 The Canadian Mineralogist 36 823-830 |  | 1998 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.284 Å | (100) |
| 2.997 Å | (80) |
| 2.446 Å | (60) |
| 1.896 Å | (60) |
| 1.603 Å | (60) |
| 2.773 Å | (50) |
| 1.177 Å | (50) |
Comments:
Tombstone, Arizona, USA.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47c : [Carbonates, phosphates, borates, nitrates] | |
| 47d : [Arsenates, antimonates, selenates, bismuthinates] | |
| 47e : [Vanadates, chromates, manganates] | |
| 47h : [Near-surface oxidized, dehydrated minerals] |
Type Occurrence of Dugganite
General Appearance of Type Material:
Green crystals up to 0.3 mm in length that could be mistaken for willemite.
Place of Conservation of Type Material:
The Natural History Museum, London, England, number 1980,544.
Harvard University, Cambridge, Massachusetts, USA, number 119093.
National Museum of Natural History, Washington, D.C., USA, number 162207.
Harvard University, Cambridge, Massachusetts, USA, number 119093.
National Museum of Natural History, Washington, D.C., USA, number 162207.
Geological Setting of Type Material:
Secondary minerals from a tellurium deposit. Formed only by severe oxidation in acid water.
Associated Minerals at Type Locality:
Synonyms of Dugganite
Other Language Names for Dugganite
Relationship of Dugganite to other Species
Member of:
Other Members of Dugganite Group:
| Cheremnykhite | Pb3Zn3(VO4)2(TeO6) | Orth. |
| Joëlbruggerite | Pb3Zn3(Sb5+,Te6+)As2O13(OH,O) | Trig. 32 : P321 |
| Kuksite | Pb3Zn3(PO4)2(TeO6) | Trig. 32 : P321 |
| Qiumingite | Pb3(Zn2Fe3+)Sb5+P2O14 | Trig. 32 : P321 |
Common Associates
Associations Based on Photo Data:
| 16 photos of Dugganite associated with Quartz | SiO2 |
| 7 photos of Dugganite associated with Eurekadumpite | (Cu,Zn)16(TeO3)2(AsO4)3Cl(OH)18 · 7H2O |
| 5 photos of Dugganite associated with Xocomecatlite | Cu3(TeO4)(OH)4 |
| 4 photos of Dugganite associated with Jarosite | KFe3+3(SO4)2(OH)6 |
| 2 photos of Dugganite associated with Hessite | Ag2Te |
| 2 photos of Dugganite associated with Chrysocolla | Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1 |
| 2 photos of Dugganite associated with Baryte | BaSO4 |
| 2 photos of Dugganite associated with Quetzalcoatlite | Zn6Cu3(TeO6)2(OH)6 · AgxPbyClx+2y |
| 2 photos of Dugganite associated with Mcalpineite | Cu3(Te6+O6) |
| 1 photo of Dugganite associated with Utahite | MgCu4Zn2Te6+3O14(OH)4 · 6H2O |
Related Minerals - Strunz-mindat Grouping
| 8.DL.05 | Foggite | CaAl(PO4)(OH)2 · H2O |
| 8.DL.10 | Fluorowardite | NaAl3(PO4)2F2(OH)2(H2O)2 |
| 8.DL.10 | Wardite | NaAl3(PO4)2(OH)4 · 2H2O |
| 8.DL.10 | Millisite | (Na,K)CaAl6(PO4)4(OH)9 · 3H2O |
| 8.DL.10 | Cyrilovite | NaFe3+3(PO4)2(OH)4 · 2H2O |
| 8.DL.15 | Petersite-(Ce) | CeCu6(PO4)3(OH)6 · 3H2O |
| 8.DL.15 | Agardite-(Nd) | NdCu6(AsO4)3(OH)6 · 3H2O |
| 8.DL.15 | Agardite-(Y) | YCu6(AsO4)3(OH)6 · 3H2O |
| 8.DL.15 | Agardite-(Ce) | CeCu6(AsO4)3(OH)6 · 3H2O |
| 8.DL.15 | 'Agardite-(Dy)' | (Dy,La)Cu6(AsO4)3(OH)6 · 3H2O |
| 8.DL.15 | Agardite-(La) | LaCu6(AsO4)3(OH)6 · 3H2O |
| 8.DL.15 | Petersite-(Y) | YCu6(PO4)3(OH)6 · 3H2O |
| 8.DL.15 | Zálesíite | CaCu6(AsO4)2(AsO3OH)(OH)6 · 3H2O |
| 8.DL.15 | Mixite | BiCu6(AsO4)3(OH)6 · 3H2O |
| 8.DL.15 | Petersite-(La) | LaCu6(PO4)3(OH)6 · 3H2O |
| 8.DL.15 | Goudeyite | AlCu6(AsO4)3(OH)6 · 3H2O |
| 8.DL.15 | Calciopetersite | CaCu6(PO4)2(PO3OH)(OH)6 · 3H2O |
| 8.DL.15 | Plumboagardite | PbCu6(AsO4)2(AsO3OH)(OH)6 · 3H2O |
| 8.DL.20 | Wallkilldellite | Ca2Mn2+3(AsO4)2(OH)4 · 9H2O |
| 8.DL.20 | Wallkilldellite-(Fe) | (Ca,Cu)4Fe2+6(AsO4,SiO4)4(OH,O)8 · 18H2O |
| 8.DL.20 | Cheremnykhite | Pb3Zn3(VO4)2(TeO6) |
| 8.DL.20 | Kuksite | Pb3Zn3(PO4)2(TeO6) |
| 8.DL.25 | Angastonite | CaMgAl2(PO4)2(OH)4 · 7H2O |
| 8.DL.30 | Långbanshyttanite | Pb2Mn2Mg(AsO4)2(OH)4 · 6H2O |
Fluorescence of Dugganite
Not fluorescent.
Other Information
Notes:
Quickly dissolves in even mildly alkaline water. Soluble in cold dilute HNO, or HCl, but if more concentrated acid is used, or heating employed, it coats with Pb(NO3)2 or PbCl2. On ignition,it fuses to a brown slag with difficulty, evolving a white sublimate of TeO, and As2O3.
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 Dugganite
mindat.org URL:
https://www.mindat.org/min-1326.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Dugganite
Localities for Dugganite
Showing 23 localities.
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.
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Cogolla Alta mine, La Ventosilla farmhouse, Belalcázar, Córdoba, Andalusia, Spain