Cupromolybdite
This page is currently not sponsored. Click here to sponsor this page.
About Cupromolybdite
Formula:
Cu3O(MoO4)2
Colour:
Honey-yellow to chestnut-brown or dark brown; bright yellow
Lustre:
Adamantine
Hardness:
3
Specific Gravity:
4.512 (Calculated)
Crystal System:
Orthorhombic
Name:
For the chemical composition.
Type Locality:
Isostructural with:
Classification of Cupromolybdite
Physical Properties of Cupromolybdite
Adamantine
Transparency:
Translucent
Colour:
Honey-yellow to chestnut-brown or dark brown; bright yellow
Streak:
Yellow or light brown
Hardness:
3 on Mohs scale
Hardness:
VHN50=189 kg/mm2 - Vickers
Comment:
Mohs hardness derived from VHN.
Tenacity:
Brittle
Cleavage:
Distinct/Good
Fracture:
Irregular/Uneven, Splintery
Density:
4.512 g/cm3 (Calculated)
Optical Data of Cupromolybdite
Anisotropism:
Distinct
Bireflectance:
Weak
Reflectivity:
400nm | R1=17.0% | R2= 18.5% |
420nm | R1=16.3% | R2= 17.7% |
440nm | R1=15.7% | R2= 17.1% |
460nm | R1=15.2% | R2= 16.5% |
480nm | R1=14.7% | R2= 16.1% |
500nm | R1=14.3% | R2= 15.7% |
520nm | R1=13.9% | R2= 15.3% |
540nm | R1=13.5% | R2= 15.0% |
560nm | R1=13.1% | R2= 14.6% |
580nm | R1=12.9% | R2= 14.3% |
600nm | R1=12.4% | R2= 13.8% |
620nm | R1=12.2% | R2= 13.6% |
640nm | R1=12.15% | R2= 13.5% |
660nm | R1=11.9% | R2= 13.2% |
680nm | R1=17.0% | R2= 18.5% |
700nm | R1=16.3% | R2= 17.7% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 18.5%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Grey, with a weak bluish hue
Internal Reflections:
Orange-red or orange-brown
Pleochroism:
Non-pleochroic
Chemical Properties of Cupromolybdite
Formula:
Cu3O(MoO4)2
IMA Formula:
Cu2+3O(Mo6+O4)2
Elements listed:
Crystallography of Cupromolybdite
Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pnma
Setting:
Pnma
Cell Parameters:
a = 7.6638(1) Å, b = 6.8670(1) Å, c = 14.5554(2) Å
Ratio:
a:b:c = 1.116 : 1 : 2.12
Unit Cell V:
766.01 ų
Z:
4
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) |
---|---|---|---|---|---|---|---|
0019362 | Cupromolybdite | Zelenski M E, Zubkova N V, Pekov I V, Polekhovsky Y S, Pushcharovsky D Y (2012) Cupromolybdite, Cu3O(MoO4)2, a new fumarolic mineral from the Tolbachik volcano, Kamchatka Peninsula, Russia European Journal of Mineralogy 24 749-757 | 2012 | the Tolbachik volcano, Kamchatka Peninsula, Russia | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
7.312 Å | (67) |
3.842 Å | (37) |
3.701 Å | (38) |
3.664 Å | (30) |
3.518 Å | (55) |
3.436 Å | (100) |
3.301 Å | (99) |
3.065 Å | (79) |
2.556 Å | (62) |
2.506 Å | (66) |
Type Occurrence of Cupromolybdite
General Appearance of Type Material:
Prismatic or acicular crystals up to 0.15 mm in length; radiating aggregates.
Place of Conservation of Type Material:
Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow, Russia: registration number is 4072/1.
Geological Setting of Type Material:
Within 2-5 cm thick sublimate crusts, along with other fumarolic minerals.
Associated Minerals at Type Locality:
Reference:
Zelenski, M.E., Zubkova, N.V., Pekov, I.V., Polekhovsky, Yu.S. & Pushcharovsky, D.Yu. (2012) Cupromolybdite, Cu3O(MoO4)2, a new fumarolic mineral from the Tolbachik volcano, Kamchatka Peninsula, Russia. European Journal of Mineralogy: 24: 749-757.
Synonyms of Cupromolybdite
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.
References for Cupromolybdite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Zelenski, M.E., Zubkova, N.V., Pekov, I.V., Polekhovsky, Yu.S. & Pushcharovsky, D.Yu. (2012) Cupromolybdite, Cu3O(MoO4)2, a new fumarolic mineral from the Tolbachik volcano, Kamchatka Peninsula, Russia. European Journal of Mineralogy: 24: 749-757.
Internet Links for Cupromolybdite
mindat.org URL:
https://www.mindat.org/min-41953.html
Please feel free to link to this page.
Please feel free to link to this page.
External Links:
Mineral Dealers:
Localities for Cupromolybdite
Locality List




All localities listed without proper references should be considered as questionable.
Russia (TL) | |
| Zelenski, M.E., Zubkova, N.V., Pekov, I.V., Polekhovsky, Yu.S. & Pushcharovsky, D.Yu. (2012): Cupromolybdite, Cu3O(MoO4)2, a new fumarolic mineral from the Tolbachik volcano, Kamchatka Peninsula, Russia. European Journal of Mineralogy, 24, 749-757. |
Yadovitaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik volcano, Kamchatka Krai, Russia