Liguowuite
A valid IMA mineral species
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About Liguowuite
Li Guowu
Formula:
WO3
Colour:
Greenish yellow
Lustre:
Greasy
Hardness:
3 - 4
Specific Gravity:
7.22 (Calculated)
Crystal System:
Monoclinic
Name:
Named in honor of after Li Guowu (李国武) (1964–), China University of Geosciences, Beijing, China, in recognition of his great contributions to new mineral research, including tewite and wumuite from the area of the type locality.
Type Locality:
Known synthetic analogue. Perovskite-type structure.
The first example of A-site vacant single oxide, thus formulating a new perovskite subgroup.
The structure is based on corner-sharing, distorted and tilted WO6 octahedra, with the W atoms being off-center.
Anhydrous counterpart of tungstite and hydrotungstite.
The first example of A-site vacant single oxide, thus formulating a new perovskite subgroup.
The structure is based on corner-sharing, distorted and tilted WO6 octahedra, with the W atoms being off-center.
Anhydrous counterpart of tungstite and hydrotungstite.
Unique Identifiers
Mindat ID:
55438
Long-form identifier:
mindat:1:1:55438:5
IMA Classification of Liguowuite
Approved
IMA Formula:
W6+O3
Approval year:
2020
First published:
2022
Classification of Liguowuite
4.E0.
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
E : Metal: Oxygen = < 1 :2
0 :
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
E : Metal: Oxygen = < 1 :2
0 :
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 |
|---|---|---|
| Lgw | 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 Liguowuite
Greasy
Transparency:
Transparent
Colour:
Greenish yellow
Streak:
White
Hardness:
3 - 4 on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Parting:
None observed
Density:
7.22 g/cm3 (Calculated)
Comment:
Calculated value based on the empirical formula.
Chemistry of Liguowuite
Mindat Formula:
WO3
Elements listed:
Crystallography of Liguowuite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 7.3258(2) Å, b = 7.5477(2) Å, c = 7.7113(2) Å
β = 90.678(3)°
β = 90.678(3)°
Ratio:
a:b:c = 0.971 : 1 : 1.022
Unit Cell V:
426.35 ų (Calculated from Unit Cell)
Comment:
the space group is P21/n
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.855 Å | (88) |
| 3.768 Å | (88) |
| 3.659 Å | (100) |
| 3.104 Å | (20) |
| 2.693 Å | (43) |
| 2.626 Å | (60) |
| 1.827 Å | (32) |
| 1.645 Å | (27) |
Type Occurrence of Liguowuite
General Appearance of Type Material:
Prismatic crystals, 0.05 to 0.1 mm in diameter; triclinic pseudomorphism is known, due to the presence of "nanoparticles with many cracks and nanovoids".
Place of Conservation of Type Material:
Mineralogical collections of (1) the Geological Museum of China, Xisi, Yangrou Hutong No. 15, Beijing 100083, People’s Republic of China, catalogue number M16121 (holotype), and (2) the Crystal Structure Laboratory, China University of Geosciences, Beijing 100083, People’s Republic of China, catalogue number NY-5-3Z (cotype).
Geological Setting of Type Material:
Neoproterozoic Sinian biotite-quartz monzonite.
Associated Minerals at Type Locality:
Synonyms of Liguowuite
Other Language Names for Liguowuite
Dutch:Liguowuiet
German:Liguowuit
Relationship of Liguowuite to other Species
Related Minerals - Strunz-mindat Grouping
| 4.E0. | Tianhuixinite | (MoO3)3 · H2O |
| 4.E0. | Hanahanite | [Zn8(OH)14(SO4)] · 3H2O |
| 4.E0.05 | Tantite | Ta2O5 |
| 4.E0.10 | Molybdite | MoO3 |
| 4.E0.10 | 'Krasnogorite' | WO3 |
Fluorescence of Liguowuite
Not fluorescent.
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 Liguowuite
mindat.org URL:
https://www.mindat.org/min-55438.html
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References for Liguowuite
Reference List:
Miyawaki, Ritsuro, Hatert, Frédéric, Pasero, Marco, Mills, Stuart J. (2021) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) – Newsletter 61. European Journal of Mineralogy, 33 (3) 299-304 doi:10.5194/ejm-33-299-2021
Localities for Liguowuite
Showing 1 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.
China (TL) | |
| Miyawaki et al. (2021) +1 other reference |
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Nanyang, Huaping County, Lijiang, Yunnan, China