Huenite
A valid IMA mineral species
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About Huenite
Formula:
Cu4(MoO4)3(OH)2
author's formula: Cu4Mo3O12(OH)2
Colour:
Very dark reddish-brown
Lustre:
Adamantine, Vitreous
Hardness:
3½ - 4
Specific Gravity:
5.1 (Calculated)
Crystal System:
Trigonal
Name:
Named in honor of Edgar Huen (b. 27 May 1947, Milan, Italy), a mineral collector and an expert in Alpine fissure minerals and worldwide systematic mineralogy. He co-discovered the mineral.
Chemically close to lindgrenite, markascherite, and szenicsite. Structure of the mineral is determined.
Reported as copper-molybdenum oxy-hydroxide mineral. Associates include an unknown pale purple phase.
Reported as copper-molybdenum oxy-hydroxide mineral. Associates include an unknown pale purple phase.
Unique Identifiers
Mindat ID:
47779
Long-form identifier:
mindat:1:1:47779:4
Similar Names
| Hainite-(Y) | A valid IMA mineral species - grandfathered | Na2Ca4(Y,REE)Ti(Si2O7)2OF3 |
| Hauynit | A synonym of 'Haüynite' | |
| Hauynita | A synonym of Haüyne | |
| Heneuite | A valid IMA mineral species | CaMg5(CO3)(PO4)3(OH) |
| Honeaite | A valid IMA mineral species | Au3TlTe2 |
IMA Classification of Huenite
Approved
IMA Formula:
Cu2+4(Mo6+O4)3(OH)2
Approval year:
2015
First published:
2019
Type description reference:
Vignola, Pietro, Rotiroti, Nicola, Gatta, G. Diego, Risplendente, Andrea, Hatert, Frédéric, Bersani, Danilo, Mattioli, Vittorio (2019) Huenite, Cu4Mo3O12(OH)2, a New Copper-molybdenum Oxy-hydroxide Mineral from the San Samuel Mine, Carrera Pinto, Cachiyuyo De Llampos District, CopiapÓ Province, Atacama Region, Chile. The Canadian Mineralogist, 57 (4) 467-474 doi:10.3749/canmin.1900011
Classification of Huenite
7.GB.15
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 for Standard |
|---|---|---|
| Hue | 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 Huenite
Adamantine, Vitreous
Colour:
Very dark reddish-brown
Streak:
Pale reddish-brown to pinkish
Hardness:
3½ - 4 on Mohs scale
Tenacity:
Brittle
Cleavage:
Distinct/Good
on {010}
on {010}
Fracture:
Irregular/Uneven
Density:
5.1 g/cm3 (Calculated)
Chemistry of Huenite
Mindat Formula:
Cu4(MoO4)3(OH)2
author's formula: Cu4Mo3O12(OH)2
author's formula: Cu4Mo3O12(OH)2
Element Weights:
Elements listed:
Crystallography of Huenite
Crystal System:
Trigonal
Class (H-M):
3m - Ditrigonal Pyramidal
Space Group:
P31c
Cell Parameters:
a = 7.653(5) Å, c = 9.411(6) Å
Ratio:
a:c = 1 : 1.23
Unit Cell V:
477.4 ų
Z:
2
Morphology:
Flattened orthorhombic prisms up to 60–70 μm in size, weakly elongated along [001].
Comment:
Space group in original IMA list erroneously reported as "P31/c"; later this misprint was corrected to P31c.
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 6.786 Å | (25) |
| 5.372 Å | (24) |
| 3.810 Å | (51) |
| 2.974 Å | (100) |
| 2.702 Å | (41) |
| 2.497 Å | (38) |
| 1.712 Å | (60) |
| 1.450 Å | (37) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] |
Type Occurrence of Huenite
General Appearance of Type Material:
Flattened, orthorhombic prisms, up to 60–70 μm in diameter, and weakly elongated along [001]; these form aggregates, up to 1 mm in diameter
Place of Conservation of Type Material:
Collections of the Laboratoire de Minéralogie, University of Liège, Belgium (catalogue no. 20399)
Empirical Formula of Type Material:
(Cu3.519Fe2+0.403)Σ3.922(Mo2.907S0.090Si0.003)Σ3.000O12·(OH)2.229
Geological Setting of Type Material:
Fractures in a quartz breccia
Associated Minerals at Type Locality:
Reference:
Vignola, Pietro, Rotiroti, Nicola, Gatta, G. Diego, Risplendente, Andrea, Hatert, Frédéric, Bersani, Danilo, Mattioli, Vittorio (2019) Huenite, Cu4Mo3O12(OH)2, a New Copper-molybdenum Oxy-hydroxide Mineral from the San Samuel Mine, Carrera Pinto, Cachiyuyo De Llampos District, CopiapÓ Province, Atacama Region, Chile. The Canadian Mineralogist, 57 (4) 467-474 doi:10.3749/canmin.1900011
Synonyms of Huenite
Other Language Names for Huenite
Common Associates
Associations Based on Photo Data:
| 2 photos of Huenite associated with Lindgrenite | Cu3(MoO4)2(OH)2 |
Related Minerals - Strunz-mindat Grouping
| 7.GB. | Stunorthropite | (NH4)4[Mo2O6(MoO4)2] |
| 7.GB. | Hartkoppeite | Ca4Mn2+Mo6+6As5+4O32(OH)2(H2O)14 · 5H2O |
| 7.GB. | Wangpuite | K3(PO4)(Mo12O36) |
| 7.GB. | Alexearlite | Hg3S2(MoO4) |
| 7.GB. | Ootannite | Th4+2W6+4O16 · 5H2O |
| 7.GB. | Natromolybdite | Na2MoO4 · 2H2O |
| 7.GB. | Marsaalamite-(Y) | Y(MoO4)(OH) |
| 7.GB.05 | Lindgrenite | Cu3(MoO4)2(OH)2 |
| 7.GB.10 | Szenicsite | Cu3(MoO4)(OH)4 |
| 7.GB.15 | 'UM1999-38-WO:CrV' | (V, Cr, W, O, H) [V:Cr:W ratio about 2:1:3] |
| 7.GB.15 | Cuprotungstite | Cu2(WO4)(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 | Mpororoite | WAlO3(OH)3 · 2(H2O) |
| 7.GB.35 | Anthoinite | AlWO3(OH)3 |
| 7.GB.40 | Obradovicite-KCu | [K2(H2O)17Cu(H2O)6][Mo8As2Fe3+3O34(OH)3] |
| 7.GB.45 | Paramendozavilite | [KAl4(H2O)30][Mo12P6Fe3+6O60(OH)13] |
| 7.GB.45 | Mendozavilite-NaFe | [Na2(H2O)15Fe3+(H2O)6][Mo8P2Fe3+3O35(OH)2] |
| 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-NaCu | [Na2(H2O)15Cu(H2O)6][Mo8P2Fe3+3O34(OH)3] |
| 7.GB.50 | Mendozavilite-KCa | [K2(H2O)15Ca(H2O)6][Mo8P2Fe3+3O34(OH)3] |
| 7.GB.60 | Peterandresenite | Mn4Nb6O19 · 14H2O |
| 7.GB.60 | Hansesmarkite | Ca2Mn2Nb6O19 · 20H2O |
| 7.GB.60 | Melcherite | Ba2Na2Mg[Nb6O19] · 6H2O |
| 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 Huenite
Non-fluorescent (SWUV & LWUV)
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 Huenite
mindat.org URL:
https://www.mindat.org/min-47779.html
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References for Huenite
Reference List:
Hålenius, U., Hatert, F., Pasero, M., Mills, S. J. (2016) New minerals and nomenclature modifications approved in 2016, CNMNC Newsletter no 31. Mineralogical Magazine, 80 (4) 691-697 doi:10.1180/minmag.2016.080.083
Vignola, Pietro, Rotiroti, Nicola, Gatta, G. Diego, Risplendente, Andrea, Hatert, Frédéric, Bersani, Danilo, Mattioli, Vittorio (2019) Huenite, Cu4Mo3O12(OH)2, a New Copper-molybdenum Oxy-hydroxide Mineral from the San Samuel Mine, Carrera Pinto, Cachiyuyo De Llampos District, CopiapÓ Province, Atacama Region, Chile. The Canadian Mineralogist, 57 (4) 467-474 doi:10.3749/canmin.1900011
Localities for Huenite
Showing 2 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.
Chile | |
| Andreas Schloth specimen & SEM-EDS. |
| Mineralogical Magazine +2 other references |
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San Samuel Mine, Carrera Pinto, Cachiyuyo de Llampos mining district, Copiapó, Copiapó Province, Atacama, Chile