Riesite
A valid IMA mineral species
This page is currently not sponsored. Click here to sponsor this page.
About Riesite
Relief map of Ries impact structure
Formula:
TiO2
Specific Gravity:
4.37 (Calculated)
Crystal System:
Monoclinic
Name:
Named for the Ries impact structure, Germany, the type locality.
Type Locality:
Polymorph of:
The sixth polymorph of TiO2.
Unique Identifiers
Mindat ID:
51474
Long-form identifier:
mindat:1:1:51474:9
GUID
(UUID V4):
(UUID V4):
4ab1b7e5-6ae2-4c88-8204-250018ef5298
IMA Classification of Riesite
Approved
Approval year:
2016
First published:
2020
Classification of Riesite
4.DM.45
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
M : With large (+- medium-sized) cations; unclassified
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
M : With large (+- medium-sized) cations; unclassified
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 |
|---|---|---|
| Rie | 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 Riesite
Transparency:
Opaque
Density:
4.37(11) g/cm3 (Calculated)
Chemistry of Riesite
Mindat Formula:
TiO2
Elements listed:
Crystallography of Riesite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P2/b
Setting:
P1 2/c 1
Cell Parameters:
a = 4.519(3) Å, b = 5.503(8) Å, c = 4.888(2) Å
β = 90.59(8)°
β = 90.59(8)°
Ratio:
a:b:c = 0.821 : 1 : 0.888
Unit Cell V:
121.55 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.490 Å | (88) |
| 2.852 Å | (100) |
| 2.833 Å | (70) |
| 2.359 Å | (33) |
| 2.094 Å | (22) |
| 1.682 Å | (23) |
| 1.671 Å | (26) |
| 1.647 Å | (27) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Near-surface Processes | |
| 30 : Terrestrial impact minerals |
Type Occurrence of Riesite
Place of Conservation of Type Material:
Type material is deposited in the collections of the Institut für Geowissenschaften, Ruprecht-Karls Universität Heidelberg, Germany, thin section ZLN114c
Geological Setting of Type Material:
Impact crater in xenolith of garnet-sillimanite restite with shock-melt veins that was trapped in suevite.
Associated Minerals at Type Locality:
Reference:
Tschauner, O.; Ma, C.; Lanzirotti, A.; Newville, M.G. (2020) Riesite, a New High Pressure Polymorph of TiO2 from the Ries Impact Structure. Minerals: 10(1): 78 (8 pgs).
Synonyms of Riesite
Related Minerals - Strunz-mindat Grouping
| 4.DM. | Bahariyaite | KMnO4 |
| 4.DM.05 | Rankamaite | (Na,K)3(Ta,Nb,Al)11(O,OH)31 |
| 4.DM.05 | Sosedkoite | (K,Na)5Al2(Ta,Nb)22O60 |
| 4.DM.15 | Cesplumtantite | (Cs,Na)2(Pb,Sb3+)3Ta8O24 |
| 4.DM.20 | Eyselite | Fe3+Ge4+3O7(OH) |
| 4.DM.25 | Kuranakhite | PbMn4+Te6+O6 |
| 4.DM.30 | Gelosaite | BiMo6+(2-5x)Mo5+6xO7(OH) · H2O |
| 4.DM.30 | Mambertiite | BiMo5+2.80O8(OH) |
| 4.DM.35 | Ekebergite | ThFeNb2O8 |
| 4.DM.50 | Sardignaite | BiMo2O7(OH) · 2H2O |
| 4.DM.55 | Tewite | (K1.5◻0.5)(Te1.25W0.25◻0.5)W5O19 |
| 4.DM.60 | Wumuite | KAl0.33W2.67O9 |
| 4.DM.60 | Kingsgateite | ZrMo6+2O7(OH)2 · 2H2O |
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 Riesite
mindat.org URL:
https://www.mindat.org/min-51474.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
References for Riesite
Localities for Riesite
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.
Germany (TL) | |
| Tschauner +7 other references |
Zipplinger Höhe, Zipplingen, Unterschneidheim, Ostalbkreis, Stuttgart Region, Baden-Württemberg, Germany