Duhamelite
A variety of Mottramite
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About Duhamelite
Formula:
(Pb,Bi,Ca)Cu(VO4)(OH,O)
Hardness:
3
Crystal System:
Orthorhombic
Name:
For J.E. Duhamel.
Ca- and Bi-bearing variety of mottramite, typically with acicular habit.
Discredited as a mineral species.
For the Bi-dominant member, see khorixasite.
Originally reported from Lousy Gulch, Payson area, Payson District (Green Valley District), Gila Co., Arizona, USA.
Discredited as a mineral species.
For the Bi-dominant member, see khorixasite.
Originally reported from Lousy Gulch, Payson area, Payson District (Green Valley District), Gila Co., Arizona, USA.
Unique Identifiers
Mindat ID:
1327 (as Duhamelite)
2792 (as Mottramite)
2792 (as Mottramite)
Long-form identifier:
mindat:1:1:1327:3 (as Duhamelite)
mindat:1:1:2792:8 (as Mottramite)
mindat:1:1:2792:8 (as Mottramite)
IMA Classification of Duhamelite
Discredited
Classification of Duhamelite
21.3.18
21 : Vanadates (and vanadates with arsenate or phosphate)
3 : Vanadates of Al, rare earths, Pb, V or Bi
21 : Vanadates (and vanadates with arsenate or phosphate)
3 : Vanadates of Al, rare earths, Pb, V or Bi
Physical Properties of Duhamelite
Hardness:
3 on Mohs scale
Optical Data of Duhamelite
Type:
Biaxial
RI values:
nα = 2.08 nβ = 2.11
Max. Birefringence:
δ = 0.000
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.
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.
Surface Relief:
Moderate
Dispersion:
r < v strong
Chemistry of Duhamelite
Mindat Formula:
(Pb,Bi,Ca)Cu(VO4)(OH,O)
Element Weights:
Crystallography of Duhamelite
Crystal System:
Orthorhombic
Other Language Names for Duhamelite
German:Duhamelit
Spanish:Duhamelita
Common Associates
Associated Minerals Based on Photo Data:
| 11 photos of Duhamelite associated with Shattuckite | Cu5(Si2O6)2(OH)2 |
| 10 photos of Duhamelite associated with Quartz | SiO2 |
| 7 photos of Duhamelite associated with Namibite | Cu(BiO)2(VO4)(OH) |
| 4 photos of Duhamelite associated with Cuprite | Cu2O |
| 4 photos of Duhamelite associated with Malachite | Cu2(CO3)(OH)2 |
| 4 photos of Duhamelite associated with Goethite | Fe3+O(OH) |
| 4 photos of Duhamelite associated with Mottramite | PbCu(VO4)(OH) |
| 3 photos of Duhamelite associated with Sillénite | Bi12SiO20 |
| 3 photos of Duhamelite associated with Ajoite | (K,Na)Cu7AlSi9O24(OH)6 · 3H2O |
| 2 photos of Duhamelite associated with Khorixasite | (Bi0.67◻0.33)Cu(VO4)(OH) |
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 Duhamelite
mindat.org URL:
https://www.mindat.org/min-1327.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
References for Duhamelite
Localities for Duhamelite
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.
Argentina | |
| Samples acquired from Nelson Valenzuela |
Australia | |
| Pring et al. (2000) |
DR Congo | |
| Lhoest et al. (1991) +1 other reference |
France | |
| Robert PECORINI collection |
Germany | |
| Blaß (1992) |
Italy | |
| Olmi F. et al. (SS) |
Mexico | |
| Dakota Matrix specimen (Phillips collection) |
Namibia | |
| Niedermayr (2001) |
Switzerland | |
| Stalder et al. (1998) |
USA | |
| Anthony et al. (1995) |
| Anthony et al. (1995) |
| Anthony et al. (1995) |
| Luetcke (n.d.) |
| Williams (1981) +1 other reference |
| Anthony et al. (1995) |
| Ron Gibbs |
| Bob Meyer (2012) |
| Collected by Joe Ruiz. | |
| Walstrom (n.d.) |
| Self collected by Brent Thorne. SEM ... +1 other reference |
| Walstrom +1 other reference |
| Walstrom (n.d.) |
| Jerry Cone Collection |
Navojoa, Navojoa Municipality, Sonora, Mexico