Häggite
A valid IMA mineral species - grandfathered
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About Häggite
Gunnar Hägg
Formula:
V3+V4+O2(OH)3
For synthetic häggite, Wu et al. (2009) suggest the formula V4O6(OH)4.
Colour:
Black
Hardness:
4½
Specific Gravity:
3.51 (Calculated)
Crystal System:
Monoclinic
Name:
Named by H.T. Evans, Jr. and Mary E. Rose in 1958 in honor of Gunnar Hägg (14 December 1903, Stockholm, Sweden - 28 May 1986), chemist, crystallographer and professor of General and Inorganic Chemistry at the University of Uppsala, Sweden.
Type Locality:
This page provides mineralogical data about Häggite.
Unique Identifiers
Mindat ID:
1796
Long-form identifier:
mindat:1:1:1796:7
GUID
(UUID V4):
(UUID V4):
68ddd164-6fac-41a8-8c07-aacf2ae6490a
IMA Classification of Häggite
Approved, 'Grandfathered' (first described prior to 1959)
First published:
1958
Classification of Häggite
4.HE.25
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
H : V[5,6] Vanadates
E : Phyllovanadates
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
H : V[5,6] Vanadates
E : Phyllovanadates
6.4.3.1
6 : HYDROXIDES AND OXIDES CONTAINING HYDROXYL
4 : Miscellaneous
6 : HYDROXIDES AND OXIDES CONTAINING HYDROXYL
4 : Miscellaneous
7.12.4
7 : Oxides and Hydroxides
12 : Oxides of V, Nb and Ta
7 : Oxides and Hydroxides
12 : Oxides of V, Nb and Ta
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 |
|---|---|---|
| Hgg | 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 Häggite
Optical Data of Häggite
Type:
Biaxial
Anisotropism:
Very strong yellowish gray to bluish gray.
Reflectivity:
| Wavelength | R |
|---|---|
| 440nm | 11.7-11.0% |
| 460nm | 11.8-11.0% |
| 480nm | 12.0-11.0% |
| 500nm | 12.3-11.0% |
| 520nm | 12.3-11.0% |
| 540nm | 13.0-11.1% |
| 560nm | 13.4-11.2% |
| 580nm | 13.7-11.2% |
| 600nm | 14.0-11.2% |
| 620nm | 14.3-11.2% |
| 640nm | 14.6-11.2% |
| 660nm | 14.9-11.3% |
| 680nm | 15.2-11.5% |
| 700nm | 15.6-11.9% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 15.6-11.9%.
Colour in reflected light:
Gray to dark gray
Chemistry of Häggite
Mindat Formula:
V3+V4+O2(OH)3
For synthetic häggite, Wu et al. (2009) suggest the formula V4O6(OH)4.
For synthetic häggite, Wu et al. (2009) suggest the formula V4O6(OH)4.
Elements listed:
Crystallography of Häggite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 12.17(5) Å, b = 2.99(1) Å, c = 4.83(2) Å
β = 94.25(8)°
β = 94.25(8)°
Ratio:
a:b:c = 4.07 : 1 : 1.615
Unit Cell V:
175.27 ų (Calculated from Unit Cell)
Z:
2
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 4.80 Å | (100) |
| 4.05 Å | (50) |
| 3.51 Å | (12) |
| 3.02 Å | (25) |
| 2.44 Å | (25) |
| 1.959 Å | (18) |
| 1.815 Å | (12) |
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] | |
| 47h : [Near-surface oxidized, dehydrated minerals] |
Geological Setting:
oxidized zone of Colorado Plateau-type U-V deposits.
Type Occurrence of Häggite
Place of Conservation of Type Material:
National Museum of Natural History, Washington, D.C., USA.
Associated Minerals at Type Locality:
Reference:
Evans, H.T., Mrose, M.E. (1958) The crystal structures of three new vanadium oxide minerals. Acta Crystallographica: 11: 56-58.
Synonyms of Häggite
Other Language Names for Häggite
Common Associates
Associated Minerals Based on Photo Data:
| 7 photos of Häggite associated with Tyuyamunite | Ca(UO2)2(VO4)2 · 5-8H2O |
| 5 photos of Häggite associated with Calcite | CaCO3 |
| 2 photos of Häggite associated with Hummerite | K2Mg2(V10O28) · 16H2O |
| 1 photo of Häggite associated with Gypsum | CaSO4 · 2H2O |
| 1 photo of Häggite associated with Grantsite | (Na,Ca)2+x(V5+,V4+)6O16 · 4H2O |
Related Minerals - Strunz-mindat Grouping
| 4.HE.05 | Melanovanadite | Ca(V5+,V4+)4O10 · 5H2O |
| 4.HE.10 | Shcherbinaite | V5+2O5 |
| 4.HE.15 | Hewettite | CaV6O16 · 9H2O |
| 4.HE.15 | Metahewettite | CaV6O16 · 3H2O |
| 4.HE.20 | Bariandite | Al0.6(V5+,V4+)8O20 · 9H2O |
| 4.HE.20 | Bokite | (Al,Fe)1.3(V5+,V4+,Fe3+)8O20 · 7.5H2O |
| 4.HE.20 | Corvusite | (Na,K,Ca,Mg)2(V5+,V4+,Fe2+)8O20 · 6-10H2O |
| 4.HE.20 | Fernandinite | (Ca,K)(V5+,V4+,Fe2+)8O20 · 10H2O |
| 4.HE.20 | Straczekite | (Ca,K,Ba)(V5+,V4+)8O20 · 3H2O |
| 4.HE.30 | Doloresite | V4+3O4(OH)4 |
| 4.HE.35 | Duttonite | V4+O(OH)2 |
| 4.HE.40 | Cavoite | CaV4+3O7 |
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 Häggite
mindat.org URL:
https://www.mindat.org/min-1796.html
Please feel free to link to this page.
Please feel free to link to this page.
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External Links:
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References for Häggite
Reference List:
Localities for Häggite
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 | |
| de Brodtkorb (1982) |
Australia | |
| Schmid +2 other references |
Germany | |
| Mücke et al. (1993) |
Italy | |
| Balestra et al. (2012) |
Kazakhstan | |
| Pavel.M. Kartashov (n.d.) |
Russia | |
| Pavel.M. Kartashov (n.d.) |
USA | |
| Eckel et al. (1997) |
| Jensen et al. (1995) |
| Mineralogical Record 26:467 |
| Am Min (1964) +2 other references |
| Northrop et al. (1996) | |
| NMBMMR Memoir 15 Geology and Technology ... |
| NMBMMR Memoir 15 Geology and Technology ... | |
| NMBMMR Memoir 15 Geology and Technology ... | |
| Jeff Weismann | |
| USGS Bull 1063D +1 other reference |
| USGS Bull 1063D +2 other references | |
| |
| Am Min 45:1144-1166 |
| USGS Bull 1082J |
Uzbekistan | |
| Pavel.M. Kartashov (n.d.) |
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Ambrosia Lake Mining Sub-district, McKinley County, New Mexico, USA