Mendozavilite-NaCu
A valid IMA mineral species
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About Mendozavilite-NaCu
Formula:
[Na2(H2O)15Cu(H2O)6][Mo8P2Fe3+3O34(OH)3]
Colour:
Lime green
Lustre:
Sub-Adamantine, Vitreous
Hardness:
2½
Specific Gravity:
2.824
Crystal System:
Monoclinic
Member of:
Name:
Named for the relationship to other mendozavilite group minerals and the dominant cations Na and Cu.
This page provides mineralogical data about Mendozavilite-NaCu.
Unique Identifiers
Mindat ID:
41946
Long-form identifier:
mindat:1:1:41946:2
GUID
(UUID V4):
(UUID V4):
ddeac18e-61e1-4f68-bb26-095af41bbad9
IMA Classification of Mendozavilite-NaCu
Approved
IMA Formula:
[Na2(H2O)15Cu(H2O)6][Mo8P2Fe3+3O34(OH)3]
Approval year:
2011
First published:
2012
Type description reference:
Kampf, A. R., Mills, S. J., Rumsey, M. S., Dini, M., Birch, W. D., Spratt, J., Pluth, J. J., Steele, I. M., Jenkins, R. A., Pinch, W. W. (2012) The heteropolymolybdate family: structural relations, nomenclature scheme and new species. Mineralogical Magazine, 76 (5) 1175-1207 doi:10.1180/minmag.2012.076.5.09
Classification of Mendozavilite-NaCu
7.GB.50
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
G : Molybdates, Wolframates and Niobates
B : With additional anions and/or H2O
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
G : Molybdates, Wolframates and Niobates
B : With additional anions and/or H2O
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 |
|---|---|---|
| Mdz-NaCu | 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 Mendozavilite-NaCu
Sub-Adamantine, Vitreous
Transparency:
Transparent
Colour:
Lime green
Streak:
Colorless to very pale green
Hardness:
2½ on Mohs scale
Tenacity:
Flexible
Cleavage:
Perfect
{001}
{001}
Parting:
{001}
Fracture:
Irregular/Uneven
Density:
2.824(5) g/cm3 (Measured) 2.824 g/cm3 (Calculated)
Optical Data of Mendozavilite-NaCu
Type:
Biaxial (+)
RI values:
nα = 1.770(5) nβ = 1.785(5) nγ = 1.805(5)
2V:
Measured: 80° (10)
Max Birefringence:
δ = 0.035
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
Dispersion:
r < v, strong, inclined
Pleochroism:
Visible
Comments:
Pale olive green, Y > X = Z
Chemistry of Mendozavilite-NaCu
Mindat Formula:
[Na2(H2O)15Cu(H2O)6][Mo8P2Fe3+3O34(OH)3]
Crystallography of Mendozavilite-NaCu
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 18.9984(16) Å, b = 10.9296(7) Å, c = 15.0818(12) Å
β = 129.906(2)°
β = 129.906(2)°
Ratio:
a:b:c = 1.738 : 1 : 1.38
Unit Cell V:
2,402.29 ų (Calculated from Unit Cell)
Morphology:
Sixsided (pseudohexagonal) tabular crystals up to 1 mm across and 0.1mm thick. Forms observed: {001},{110}, {111},{20-1} and {110}.
Twinning:
Ubiquitous: contact on {001} and penetration, both on roatation of 120° about [102].
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 8.841 Å | (100) |
| 7.330 Å | (37) |
| 3.676 Å | (17) |
| 3.132 Å | (19) |
| 3.007 Å | (25) |
| 2.932 Å | (21) |
| 2.743 Å | (20) |
| 1.769 Å | (22) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47c : [Carbonates, phosphates, borates, nitrates] |
Type Occurrence of Mendozavilite-NaCu
General Appearance of Type Material:
As thin vein fillings and well developed crystals in cavities of quartz
Place of Conservation of Type Material:
Natural History Museum of Los Angeles County, catalogue numbers 60483, 60484,60485 and 60486
Geological Setting of Type Material:
In the oxidation zone of a porphyry copper deposit
Associated Minerals at Type Locality:
Reference:
Kampf, A.R., Mills, S.J., Rumsey, M.S., Dini, M., Birch, W.D., Spratt, J., Pluth, J.J., Steele, I.M., Jenkins, R.A., and Pinch, W.W. (2012): The heteromolybdate family: structural relations, nomenclature scheme and new species. Mineralogical Magazine: 76(5): 1175-1207.
Synonyms of Mendozavilite-NaCu
Relationship of Mendozavilite-NaCu to other Species
Member of:
Other Members of this group:
| Melkovite | [Ca2(H2O)15Ca(H2O)6][Mo8P2Fe3+3O36(OH)] | Mon. 2/m : B2/m |
| Mendozavilite-KCa | [K2(H2O)15Ca(H2O)6][Mo8P2Fe3+3O34(OH)3] | Mon. 2/m : B2/m |
| Mendozavilite-NaFe | [Na2(H2O)15Fe3+(H2O)6][Mo8P2Fe3+3O35(OH)2] | Mon. 2/m : B2/m |
Related Minerals - Strunz-mindat Grouping
| 7.GB. | Wangpuite | K3(PO4)(Mo12O36) |
| 7.GB. | Natromolybdite | Na2MoO4 · 2H2O |
| 7.GB. | Ootannite | Th4+2W6+4O16 · 5H2O |
| 7.GB.05 | Lindgrenite | Cu3(MoO4)2(OH)2 |
| 7.GB.10 | Szenicsite | Cu3(MoO4)(OH)4 |
| 7.GB.15 | Cuprotungstite | Cu2(WO4)(OH)2 |
| 7.GB.15 | UM1999-38-WO:CrV | (V, Cr, W, O, H) [V:Cr:W ratio about 2:1:3] |
| 7.GB.15 | Huenite | Cu4(MoO4)3(OH)2 |
| 7.GB.20 | Phyllotungstite | (H2O,M)x(W,Fe)(O,OH)3 · yH2O (M = Ca, Cs, Pb or K) |
| 7.GB.25 | Rankachite | Ca0.5(V4+,V5+)(W6+,Fe3+)2O8(OH) · 2H2O |
| 7.GB.30 | Ferrimolybdite | Fe2(MoO4)3 · nH2O |
| 7.GB.35 | Anthoinite | AlWO3(OH)3 |
| 7.GB.35 | Mpororoite | WAlO3(OH)3 · 2(H2O) |
| 7.GB.40 | Obradovicite-KCu | [K2(H2O)17Cu(H2O)6][Mo8As2Fe3+3O34(OH)3] |
| 7.GB.45 | Mendozavilite-NaFe | [Na2(H2O)15Fe3+(H2O)6][Mo8P2Fe3+3O35(OH)2] |
| 7.GB.45 | Paramendozavilite | [KAl4(H2O)30][Mo12P6Fe3+6O60(OH)13] |
| 7.GB.45 | Obradovicite-NaCu | Na2(H2O)17Cu(H2O)6][Mo8As2Fe3+3O34(OH)3] |
| 7.GB.45 | Obradovicite-NaNa | [Na2(H2O)16Na(H2O)6][Mo8As2Fe3+3O33(OH)4] |
| 7.GB.50 | Tancaite-(Ce) | FeCe(MoO4)3 · 3H2O |
| 7.GB.50 | Mendozavilite-KCa | [K2(H2O)15Ca(H2O)6][Mo8P2Fe3+3O34(OH)3] |
| 7.GB.60 | Peterandresenite | Mn4Nb6O19 · 14H2O |
| 7.GB.60 | Melcherite | Ba2Na2Mg[Nb6O19] · 6H2O |
| 7.GB.60 | Hansesmarkite | Ca2Mn2Nb6O19 · 20H2O |
| 7.GB.65 | Ichnusaite | Th(MoO4)2 · 3H2O |
| 7.GB.70 | Markascherite | Cu3(MoO4)(OH)4 |
| 7.GB.75 | Nuragheite | Th(MoO4)2 · H2O |
| 7.GB.80 | Ophirite | Ca2Mg4[Zn2Mn3+2(H2O)2(Fe3+W9O34)2] · 46H2O |
Fluorescence of Mendozavilite-NaCu
None
Other Information
Notes:
Slowly soluble in concentrated HCl
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 Mendozavilite-NaCu
mindat.org URL:
https://www.mindat.org/min-41946.html
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References for Mendozavilite-NaCu
Reference List:
Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2011) New minerals and nomenclature modifications approved in 2011, CNMNC Newsletter No. 10. Mineralogical Magazine, 75 (5) 2549-2561 doi:10.1180/minmag.2011.075.5.2549
Kampf, A. R., Mills, S. J., Rumsey, M. S., Dini, M., Birch, W. D., Spratt, J., Pluth, J. J., Steele, I. M., Jenkins, R. A., Pinch, W. W. (2012) The heteropolymolybdate family: structural relations, nomenclature scheme and new species. Mineralogical Magazine, 76 (5) 1175-1207 doi:10.1180/minmag.2012.076.5.09
Localities for Mendozavilite-NaCu
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.
Chile (TL) | |
| Williams et al. (2011) +1 other reference |
| samples analysed by Tony Kampf |
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Chuquicamata Mine, Chuquicamata District, Calama, El Loa Province, Antofagasta, Chile