Matthiasweilite
A valid IMA mineral species
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About Matthiasweilite
Formula:
PbTe4+O3
Colour:
Light yellow
Lustre:
Adamantine
Hardness:
2½
Specific Gravity:
7.282 (Calculated)
Crystal System:
Triclinic
Name:
Named in honor of Matthias Weil (b. 1970), German experimental structural inorganic chemist and Head of the Division of Structural Chemistry at the Vienna University of Technology (TU-Wien).
Dimorph of:
Unique Identifiers
Mindat ID:
55686
Long-form identifier:
mindat:1:1:55686:0
GUID
(UUID V4):
(UUID V4):
50cd0491-2877-49a1-a1f4-e0ef86b1bb60
IMA Classification of Matthiasweilite
Approved
First published:
2022
Classification of Matthiasweilite
4.JK.
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
J : Arsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodates
K : Tellurites without additional anions, without H2O
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
J : Arsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodates
K : Tellurites without additional anions, without 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 |
---|---|---|
Mtw | 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 Matthiasweilite
Adamantine
Colour:
Light yellow
Streak:
White
Hardness:
2½ on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Conchoidal
Density:
7.282 g/cm3 (Calculated)
Chemistry of Matthiasweilite
Mindat Formula:
PbTe4+O3
Elements listed:
Crystallography of Matthiasweilite
Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 7.0256(4) Å, b = 10.6345(6) Å, c = 11.9965(8) Å
α = 78.513(6)°, β = 83.104(6)°, γ = 84.083(6)°
α = 78.513(6)°, β = 83.104(6)°, γ = 84.083(6)°
Ratio:
a:b:c = 0.661 : 1 : 1.128
Unit Cell V:
869.10 ų (Calculated from Unit Cell)
Z:
10
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.270 Å | (77) |
3.146 Å | (100) |
3.010 Å | (28) |
2.815 Å | (33) |
2.564 Å | (18) |
1.952 Å | (31) |
1.784 Å | (18) |
1.667 Å | (18) |
Type Occurrence of Matthiasweilite
General Appearance of Type Material:
Tightly intergrown masses of light yellow crystals.
Place of Conservation of Type Material:
Mineralogical collections of (1) the Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA, catalogue number 76156 (holotype) and 76157 (cotype), and (2) the Museums Victoria, GPO Box 666, Melbourne 3001, Victoria, Australia, specimen number M55535 (cotype).
Geological Setting of Type Material:
Secondary mineral.
Associated Minerals at Type Locality:
Common Associates
Associated Minerals Based on Photo Data:
1 photo of Matthiasweilite associated with Northstarite | Pb6(Te4+O3)5(S6+O3S2-) |
Related Minerals - Strunz-mindat Grouping
4.JK.05 | Winstanleyite | TiTe4+3O8 |
4.JK.05 | Walfordite | (Fe3+,Te6+)Te4+3O8 |
4.JK.10 | Spiroffite | Mn2+2Te4+3O8 |
4.JK.10 | Zincospiroffite | Zn2Te4+3O8 |
4.JK.15 | Balyakinite | Cu(TeO3) |
4.JK.20 | Rajite | Cu(Te4+2O5) |
4.JK.25 | Carlfriesite | CaTe4+2Te6+O8 |
4.JK.30 | Denningite | (Mn2+,Ca,Zn)Te4+2O5 |
4.JK.35 | Chekhovichite | Bi2Te4+4O11 |
4.JK.40 | Smirnite | Bi2Te4+O5 |
4.JK.45 | Choloalite | (Cu,Sb)3(Pb,Ca)3(TeO3)6Cl |
4.JK.50 | Fairbankite | Pb2+12(Te4+O3)11(SO4) |
4.JK.55 | Plumbotellurite | Pb(TeO3) |
4.JK.60 | Magnolite | [Hg2]2+[Te4+O3] |
4.JK.65 | Moctezumite | Pb(UO2)(TeO3)2 |
4.JK.70 | Schmitterite | (UO2)(TeO3) |
4.JK.75 | Cliffordite | (UO2)Te4+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 Matthiasweilite
mindat.org URL:
https://www.mindat.org/min-55686.html
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External Links:
Mineral Dealers:
References for Matthiasweilite
Reference List:
Miyawaki, Ritsuro, Hatert, Frédéric, Pasero, Marco, Mills, Stuart J. (2021) CNMNC Newsletter 64. IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) Mineralogical Magazine, 86 (1) 178-182 doi:10.1180/mgm.2021.93
forum.amiminerals.it (2022) http://forum.amiminerals.it/viewtopic.php?f=5&t=17514&sid=ac8394b86b3099bb772b2f3d5a9c4044
Kampf, Anthony R., Missen, Owen P., Mills, Stuart J., Ma, Chi, Housley, Robert M., Chorazewicz, Marek, Marty, Joe, Coolbaugh, Mark, Momma, Koichi (2022) Matthiasweilite, PbTe4+O3, a New Tellurite Mineral from the Delamar Mine, Lincoln County, Nevada, USA. The Canadian Mineralogist, 60 (5) 805-814 doi:10.3749/canmin.2200015
Localities for Matthiasweilite
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.
USA (TL) | |
| Miyawaki et al. (2021) +1 other reference |
Mine dump, Delamar Mine, Delamar Mining District, Lincoln County, Nevada, USA