Pseudodickthomssenite
A valid IMA mineral species
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About Pseudodickthomssenite
Formula:
Mg(VO3)2 · 8H2O
Colour:
light tan
Lustre:
Silky
Specific Gravity:
1.97 (Calculated)
Crystal System:
Triclinic
Name:
for its relation to dickthomssenite
Type Locality:
Unique Identifiers
Mindat ID:
55541
Long-form identifier:
mindat:1:1:55541:8
IMA Classification of Pseudodickthomssenite
Approved
IMA Formula:
Mg(V5+O3)2·8H2O
Classification of Pseudodickthomssenite
4.HD.
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
H : V[5,6] Vanadates
D : Inovanadates
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
H : V[5,6] Vanadates
D : Inovanadates
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 |
|---|---|---|
| Pdth | 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 Pseudodickthomssenite
Silky
Colour:
Light tan
Streak:
White
Tenacity:
Brittle
Cleavage:
Very Good
{011} {011}
{011} {011}
Fracture:
Splintery
Density:
1.97(2) g/cm3 (Calculated)
Chemistry of Pseudodickthomssenite
Mindat Formula:
Mg(VO3)2 · 8H2O
Element Weights:
Elements listed:
Crystallography of Pseudodickthomssenite
Crystal System:
Triclinic
Class (H-M):
1 - Pedial
Space Group:
P1
Cell Parameters:
a = 7.3566(6) Å, b = 9.4672(9) Å, c = 9.5529(9) Å
α = 104.205(7)°, β = 100.786(7)°, γ = 100.157(7)°
α = 104.205(7)°, β = 100.786(7)°, γ = 100.157(7)°
Ratio:
a:b:c = 0.777 : 1 : 1.009
Unit Cell V:
616.09 ų (Calculated from Unit Cell)
Z:
2
Type Occurrence of Pseudodickthomssenite
General Appearance of Type Material:
diverging cluster of striated needles up to about 500 μm long and 20 μm in diameter
Place of Conservation of Type Material:
mineralogical collections of the Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA, catalogue numbers 76141
Associated Minerals at Type Locality:
Other Language Names for Pseudodickthomssenite
Dutch:Pseudodickthomsseniet
German:Pseudodickthomssenit
Common Associates
Related Minerals - Strunz-mindat Grouping
| 4.HD.05 | Rossite | Ca(VO3)2 · 4H2O |
| 4.HD.10 | Metarossite | Ca(V2O6) · 2H2O |
| 4.HD.15 | Munirite | NaVO3 · 1.9H2O |
| 4.HD.20 | Metamunirite | NaVO3 |
| 4.HD.25 | Dickthomssenite | Mg(V2O6) · 7H2O |
| 4.HD.30 | Ansermetite | Mn2+(V2O6) · 4H2O |
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 Pseudodickthomssenite
mindat.org URL:
https://www.mindat.org/min-55541.html
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External Links:
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References for Pseudodickthomssenite
Reference List:
Miyawaki, Ritsuro, Hatert, Frédéric, Pasero, Marco, Mills, Stuart J. (2021) Newsletter 62. Mineralogical Magazine, 85 (4) 634-638 doi:10.1180/mgm.2021.62
Localities for Pseudodickthomssenite
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.
USA (TL) | |
| Miyawaki et al. (2021) |
Pickett Corral Mine, Montrose County, Colorado, USA