Huemulite
A valid IMA mineral species
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About Huemulite
View of "Huemul" Uranium Mine abandoned.
Huemul Mine, Pampa Amarilla mining district, Malargüe Department, Mendoza Province, Argentina
Huemul Mine, Pampa Amarilla mining district, Malargüe Department, Mendoza Province, Argentina
Formula:
Na4Mg(V10O28) · 24H2O
Colour:
Yellowish orange to orange
Lustre:
Adamantine, Sub-Adamantine, Vitreous, Sub-Vitreous, Dull
Hardness:
2½ - 3
Specific Gravity:
2.39
Crystal System:
Triclinic
Member of:
Name:
Named in 1966 by C. E. Gordillo, E. Linares, R. O. Toubes, and Horace Winchell for one of the type localities: Huemul Mine, Mendoza Province, Argentina.
Easily soluble in water.
Unique Identifiers
Mindat ID:
1941
Long-form identifier:
mindat:1:1:1941:1
GUID
(UUID V4):
(UUID V4):
28dd21e0-67ed-481e-a944-123dd5e2899c
IMA Classification of Huemulite
Approved
IMA Formula:
Na4MgV5+10O28 · 24H2O
First published:
1966
Classification of Huemulite
4.HG.10
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
H : V[5,6] Vanadates
G : Unclassified V oxides
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
H : V[5,6] Vanadates
G : Unclassified V oxides
47.2.3.1
47 : VANADIUM OXYSALTS
2 : Anhydrous Vanadium Oxysalts Containing Hydroxyl or Halogen
47 : VANADIUM OXYSALTS
2 : Anhydrous Vanadium Oxysalts Containing Hydroxyl or Halogen
21.1.6
21 : Vanadates (and vanadates with arsenate or phosphate)
1 : Vanadates of the alkalis and Cu
21 : Vanadates (and vanadates with arsenate or phosphate)
1 : Vanadates of the alkalis and Cu
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 |
---|---|---|
Hml | 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 Huemulite
Adamantine, Sub-Adamantine, Vitreous, Sub-Vitreous, Dull
Transparency:
Transparent, Translucent
Comment:
Natural fine-grained material is dull
Colour:
Yellowish orange to orange
Streak:
Yellow
Hardness:
2½ - 3 on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
{001} perfect; {010} good
{001} perfect; {010} good
Density:
2.39(5) g/cm3 (Measured) 2.404 g/cm3 (Calculated)
Optical Data of Huemulite
Type:
Biaxial (-)
RI values:
nα = 1.679(3) nβ = 1.734(3) nγ = 1.742(2)
2V:
Measured: 20° to 25°, Calculated: 40°
Birefringence:
0.063
Max Birefringence:
δ = 0.063
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:
High
Dispersion:
r > v strong
Pleochroism:
Visible
Comments:
X= light yellow
Y= golden yellow
Z= yellowish orange
Y= golden yellow
Z= yellowish orange
Chemistry of Huemulite
Mindat Formula:
Na4Mg(V10O28) · 24H2O
Crystallography of Huemulite
Crystal System:
Triclinic
Cell Parameters:
a = 11.770 Å, b = 11.838 Å, c = 9.018(9) Å
α = 107.2°, β = 112.2°, γ = 101.5°
α = 107.2°, β = 112.2°, γ = 101.5°
Ratio:
a:b:c = 0.994 : 1 : 0.762
Unit Cell V:
1,040.32 ų (Calculated from Unit Cell)
Z:
1
Morphology:
Synthetic crystals are pseudohexagonal elongated along [100].
Comment:
Point Group: 1 or 1; Space Group: P1 or P1.
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
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Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
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Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
Black Background | White Background
Perspective On | Perspective Off
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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) |
---|---|---|---|---|---|---|---|
0018460 | Huemulite | Colombo F, Baggio R, Kampf A R (2011) The crystal structure of the elusive huemulite The Canadian Mineralogist 49 849-864 | 2011 | synthetic | 0 | 293 | |
0018461 | Huemulite | Colombo F, Baggio R, Kampf A R (2011) The crystal structure of the elusive huemulite The Canadian Mineralogist 49 849-864 | 2011 | West Sunday mine, Utah, USA | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
10.59 Å | (90) |
10.20 Å | (55) |
9.12 Å | (60) |
8.22 Å | (35) |
7.62 Å | (100) |
6.07 Å | (15) |
5.26 Å | (25) |
3.956 Å | (20) |
3.795 Å | (25) |
3.054 Å | (30) |
2.833 Å | (35) |
Comments:
Gordillo, et al. (1966).
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 7: Great Oxidation Event | <2.4 |
47a : [Near-surface hydration of prior minerals] | |
47e : [Vanadates, chromates, manganates] | |
Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere | <0.6 |
50 : Coal and/or oil shale minerals | <0.36 |
Stage 10b: Anthropogenic minerals | <10 Ka |
55 : Anthropogenic mine minerals |
Type Occurrence of Huemulite
General Appearance of Type Material:
Fibrous crusts and films, also fine-grained granular.
Place of Conservation of Type Material:
National Museum of Natural History, Washington, D.C., USA, 120076.
Geological Setting of Type Material:
A post-mining mineral derived from Cu-U sandstone/conglomerate deposits.
Associated Minerals at Type Locality:
Reference:
Gordillo, C.E., Linares, E., Toubes, R.O., Winchell, H. (1966) Huemulite, Na4MgV10O28·24H2O, a new hydrous sodium a magnesium vanadate from Huemul mine, Mendoza province, Argentina. American Mineralogist: 51: 1-13.
Synonyms of Huemulite
Other Language Names for Huemulite
Relationship of Huemulite to other Species
Member of:
Other Members of this group:
Hummerite | K2Mg2(V10O28) · 16H2O | Tric. 1 : P1 |
Lasalite | Na2Mg2(V10O28) · 20H2O | Mon. 2/m : B2/b |
Magnesiopascoite | Ca2Mg(V10O28) · 16H2O | Mon. 2/m : B2/m |
Pascoite | Ca2Ca(V10O28) · 17H2O | Mon. 2 : B2 |
Rakovanite | (NH4)3Na3(V10O28) · 12H2O | Mon. 2/m |
Common Associates
Associated Minerals Based on Photo Data:
8 photos of Huemulite associated with Pascoite | Ca2Ca(V10O28) · 17H2O |
1 photo of Huemulite associated with Slag | |
1 photo of Huemulite associated with Rossite | Ca(VO3)2 · 4H2O |
1 photo of Huemulite associated with Corvusite | (Na,K,Ca,Mg)2(V5+,V4+,Fe2+)8O20 · 6-10H2O |
1 photo of Huemulite associated with Montroseite | (V3+,Fe3+)O(OH) |
Related Minerals - Strunz-mindat Grouping
4.HG. | Calciodelrioite | Ca(VO3)2 · 4H2O |
4.HG. | Trebiskyite | Na3Mg2[TiV9O28] · 22H2O |
4.HG.05 | Fervanite | Fe3+4V5+4O16 · 5H2O |
4.HG.15 | Vanalite | NaAl8V10O38 · 30H2O |
4.HG.20 | Simplotite | CaV4+4O9 · 5H2O |
4.HG.25 | Vanoxite | V4+4V5+2O13 · 8H2O |
4.HG.30 | Navajoite | Fe3+V5+9O24 · 12H2O |
4.HG.35 | Delrioite | CaSr(V2O6)(OH)2 · 3H2O |
4.HG.40 | Metadelrioite | CaSr(V2O6)(OH)2 |
4.HG.45 | Barnesite | (Na,Ca)V6O16 · 3H2O |
4.HG.50 | Hendersonite | (Ca,Sr)1.3V6O16 · 6H2O |
4.HG.55 | Grantsite | (Na,Ca)2+x(V5+,V4+)6O16 · 4H2O |
4.HG.60 | Lenoblite | V4+2O4 · 2H2O |
4.HG.65 | Satpaevite | Al12V4+2V5+6O37 · 30H2O |
4.HG.70 | Pandoraite-Ba | BaV4+5V5+2O16 · 3H2O |
4.HG.70 | Pandoraite-Ca | CaV4+5V5+2O16 · 3H2O |
Fluorescence of Huemulite
Not fluorescent in UV.
Other Information
Thermal Behaviour:
Melts at 500 °C.
Notes:
Soluble in water. Most properties measured on recrystallized material.
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 Huemulite
mindat.org URL:
https://www.mindat.org/min-1941.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Huemulite
Reference List:
Localities for Huemulite
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).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Argentina | |
| Gordillo et al. (1966) |
Anthony et al. (1997) | |
Anthony et al. (1997) | |
| Gordillo et al. (1966) |
Czech Republic | |
| Josef Vajdak (2008) |
| Lapis 7-8/2003 |
Greece | |
| Färber (n.d.) +2 other references |
Spain | |
| Joy Desor analysis by Raman spectroscopy and SEM-EDS: Desor (2018) |
UK | |
| Brian Craik-Smith collection (NHM London XRD ID) |
USA | |
| Kampf et al. (2012) +1 other reference |
| Kampf et al. (2019) |
Collected by and in the collection of ... | |
Collected by and in the collection of ... | |
Kampf et al. (2012) | |
| Castor et al. (2004) |
| Rocks & Minerals |
Castor et al. (2004) | |
Frost et al. (5) | |
| Pavel M. Kartashov analytical data 2015 |
| Kasatkin et al. (2014) +1 other reference |
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Liebenbergite slag dump, Lavrion slag localities, Lavreotiki, East Attica, Attica, Greece