Reidite
A valid IMA mineral species
This page kindly sponsored in memory of Dr Alan F. Reid
Alan F. Reid
Formula:
Zr(SiO4)
Colour:
Colourless
Lustre:
Adamantine
Hardness:
7½
Specific Gravity:
5.2 (Calculated)
Crystal System:
Tetragonal
Member of:
Name:
Named in 2002 by Billy P. Glass, Shaobin Liu, and Peter B. Leavens in honor of Alan Forrest Reid (26 March 1931, Gisborne, New Zealand - 17 January 2013, Adelaide, Australia), Commonwealth Scientific and Industrial Research Organisation (CSIRO), who first produced the phase in high-pressure laboratory experiments in 1969. At CSIRO he was, at different times, Director of Minerals, Energy and Construction; Director of CSIRO's Institute of Energy and Earth Resources; and Chief of the Division of Mineral Engineering. He also analyzed Apollo lunar samples and codescribed the mineral tranquillityite.
Co-Type Localities:
ⓘ Deep Sea Drilling Project Site 612, Upper continental slope of New Jersey, Atlantic Ocean
ⓘ Ocean Drilling Program Hole 903C, Upper continental slope of New Jersey, Atlantic Ocean
ⓘ Ocean Drilling Program Hole 904A, Upper continental slope of New Jersey, Atlantic Ocean
ⓘ Bath Cliff, Saint John Parish, Barbados
ⓘ Ocean Drilling Program Hole 903C, Upper continental slope of New Jersey, Atlantic Ocean
ⓘ Ocean Drilling Program Hole 904A, Upper continental slope of New Jersey, Atlantic Ocean
ⓘ Bath Cliff, Saint John Parish, Barbados
Dimorph of:
A high-pressure polymorph of zircon with a scheelite-type structure.
The presence of reidite in shocked zircon (in which it may occur as micron-sized lamellae) is evidence of shock pressures in excess of ∼30 GPa.
The presence of reidite in shocked zircon (in which it may occur as micron-sized lamellae) is evidence of shock pressures in excess of ∼30 GPa.
Unique Identifiers
Mindat ID:
11467
Long-form identifier:
mindat:1:1:11467:3
IMA Classification of Reidite
Approved
Approval year:
2001
First published:
2002
Classification of Reidite
9.AD.45
9 : SILICATES (Germanates)
A : Nesosilicates
D : Nesosilicates without additional anions; cations in [6] and/or greater coordination
9 : SILICATES (Germanates)
A : Nesosilicates
D : Nesosilicates without additional anions; cations in [6] and/or greater coordination
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 |
|---|---|---|
| Rei | 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 Reidite
Adamantine
Colour:
Colourless
Streak:
White
Hardness:
7½ on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
5.2 g/cm3 (Calculated)
Optical Data of Reidite
Type:
Uniaxial
Pleochroism:
Non-pleochroic
Chemistry of Reidite
Mindat Formula:
Zr(SiO4)
Element Weights:
Elements listed:
Crystallography of Reidite
Crystal System:
Tetragonal
Class (H-M):
4/m - Dipyramidal
Space Group:
I41/a
Cell Parameters:
a = 4.738 Å, c = 10.506 Å
Ratio:
a:c = 1 : 2.217
Unit Cell V:
235.84 ų
Z:
4
Morphology:
skeletal crystals up to 10 µm in length and 0.3 µm in width; also lamellar intergrowths in host zircon crystals.
Epitaxial Relationships of Reidite
Epitaxial Minerals:
| Zircon | Zr(SiO4) |
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.81 Å | (100) |
| 1.755 Å | (60) |
| 2.065 Å | (50) |
| 1.441 Å | (50) |
| 1.55 Å | (45) |
| 4.30 Å | (40) |
| 3.29 Å | (40) |
Comments:
ODP Site 904, New Jersey continental shelf, USA. Data are from the type description.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Near-surface Processes | |
| 30 : Terrestrial impact minerals |
Type Occurrence of Reidite
Co-Type Localities:
ⓘ Deep Sea Drilling Project Site 612, Upper continental slope of New Jersey, Atlantic Ocean
ⓘ Ocean Drilling Program Hole 903C, Upper continental slope of New Jersey, Atlantic Ocean
ⓘ Ocean Drilling Program Hole 904A, Upper continental slope of New Jersey, Atlantic Ocean
ⓘ Bath Cliff, Saint John Parish, Barbados
ⓘ Ocean Drilling Program Hole 903C, Upper continental slope of New Jersey, Atlantic Ocean
ⓘ Ocean Drilling Program Hole 904A, Upper continental slope of New Jersey, Atlantic Ocean
ⓘ Bath Cliff, Saint John Parish, Barbados
General Appearance of Type Material:
skeletal crystals replacing zircon. The crystals are up to 10 µm in length and 0.3 µm in width.
Place of Conservation of Type Material:
Holotype material is deposited at the Smithsonian Institution (National Museum of Natural History), Washington, D.C., catalog number NMNH 173504.
Geological Setting of Type Material:
In upper Eocene impact ejecta layer, probably from the Chesapeake Bay impact structure.
Associated Minerals at Type Locality:
Synonyms of Reidite
Other Language Names for Reidite
Relationship of Reidite to other Species
Member of:
Other Members of Zircon Group:
| Coffinite | U(SiO4) · nH2O | Tet. 4/mmm (4/m 2/m 2/m) : I41/amd |
| Hafnon | Hf(SiO4) | Tet. 4/mmm (4/m 2/m 2/m) : I41/amd |
| Stetindite-(Ce) | Ce(SiO4) | Tet. 4/mmm (4/m 2/m 2/m) : I41/amd |
| Thorite | Th(SiO4) | Tet. 4/mmm (4/m 2/m 2/m) : I41/amd |
| Zircon | Zr(SiO4) | Tet. 4/mmm (4/m 2/m 2/m) : I41/amd |
Common Associates
Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat Grouping
| 9.AD. | Adrianite | Ca12(Al4Mg3Si7)O32Cl6 |
| 9.AD.05 | Larnite | Ca2SiO4 |
| 9.AD.10 | Calcio-olivine | Ca2SiO4 |
| 9.AD.15 | Merwinite | Ca3Mg(SiO4)2 |
| 9.AD.20 | Bredigite | Ca7Mg(SiO4)4 |
| 9.AD.25 | Midbarite | Ca3Mg2(V2Si)O12 |
| 9.AD.25 | Menzerite-(Y) | (Y2Ca)Mg2(SiO4)3 |
| 9.AD.25 | Uvarovite | Ca3Cr2(SiO4)3 |
| 9.AD.25 | Eltyubyuite | Ca12Fe3+10Si4O32Cl6 |
| 9.AD.25 | Eringaite | Ca3Sc2(SiO4)3 |
| 9.AD.25 | Henritermierite | Ca3Mn3+2(SiO4)2[◻(OH)4] |
| 9.AD.25 va | Hydrougrandite | (Ca,Mg,Fe2+)3(Fe3+,Al)2[(OH)4(SiO4)2] |
| 9.AD.25 | Calderite | Mn2+3Fe3+2(SiO4)3 |
| 9.AD.25 | Nikmelnikovite | Ca12(Fe2+Fe3+3Al3◻)[SiO4]6[◻(OH)4]5◻4 |
| 9.AD.25 | Hutcheonite | Ca3Ti2(SiO4)(AlO4)2 |
| 9.AD.25 | Wadalite | (Ca,Mg)6(Al,Fe3+)4((Si,Al)O4)3O4Cl3 |
| 9.AD.25 | Rubinite | Ca3Ti3+2(SiO4)3 |
| 9.AD.25 | Kerimasite | Ca3Zr2(SiO4)(Fe3+O4)2 |
| 9.AD.25 | Holtstamite | Ca3Al2(SiO4)2[◻(OH)4] |
| 9.AD.25 | Spessartine | Mn2+3Al2(SiO4)3 |
| 9.AD.25 | Toturite | Ca3Sn2(SiO4)(Fe3+O4)2 |
| 9.AD.25 | Kimzeyite | Ca3Zr2(SiO4)(AlO4)2 |
| 9.AD.25 | Khoharite | Mg3Fe3+2(SiO4)3 |
| 9.AD.25 | Irinarassite | Ca3Sn2(SiO4)(AlO4)2 |
| 9.AD.25 | Knorringite | Mg3Cr2(SiO4)3 |
| 9.AD.25 | Goldmanite | Ca3V3+2(SiO4)3 |
| 9.AD.25 | Blythite | Mn2+3Mn3+2[SiO4]3 |
| 9.AD.25 | Skiagite | Fe2+3Fe3+2[SiO4]3 |
| 9.AD.25 | UM1984-37-SiO:CrMn | Mn2+3Cr3+2(SiO4)3 |
| 9.AD.25 | Almandine | Fe2+3Al2(SiO4)3 |
| 9.AD.25 va | Yamatoite | (Mn2+,Ca)3(V3+,Al)2(SiO4)3 |
| 9.AD.25 | Momoiite | Mn2+3V3+2(SiO4)3 |
| 9.AD.25 | Grossular | Ca3Al2(SiO4)3 |
| 9.AD.25 | Andradite | Ca3Fe3+2(SiO4)3 |
| 9.AD.25 | Morimotoite | Ca3(TiFe2+)(SiO4)3 |
| 9.AD.25 | Majorite | Mg3(MgSi)(SiO4)3 |
| 9.AD.25 | Pyrope | Mg3Al2(SiO4)3 |
| 9.AD.25 | Schorlomite | Ca3Ti2(SiO4)(Fe3+O4)2 |
| 9.AD.30 | Hafnon | Hf(SiO4) |
| 9.AD.30 | Zircon | Zr(SiO4) |
| 9.AD.30 | Coffinite | U(SiO4) · nH2O |
| 9.AD.30 | Thorite | Th(SiO4) |
| 9.AD.30 va | Auerlite | near Th(Si,P)O4 |
| 9.AD.30 | Stetindite-(Ce) | Ce(SiO4) |
| 9.AD.35 | Tombarthite-(Y) | Y4(Si,H4)4O12-x(OH)4+2x |
| 9.AD.35 | Huttonite | ThSiO4 |
| 9.AD.40 | Eulytine | Bi4(SiO4)3 |
| 9.AD.55 | Jeffbenite | Mg3Al2Si3O12 |
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 Reidite
mindat.org URL:
https://www.mindat.org/min-11467.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
References for Reidite
Reference List:
Reid, A.F., Ringwood, A.E. (1969) Newly observed high pressure transformations in Mn3O4, CaAl2O4, and ZrSiO4. Earth and Planetary Science Letters, 6 (3) 205-208 doi:10.1016/0012-821x(69)90091-0
Glass, Billy P., Liu, Shaobin, Leavens, Peter B. (2002) Reidite: An impact-produced high-pressure polymorph of zircon found in marine sediments. American Mineralogist, 87 (4) 562-565 doi:10.2138/am-2002-0420
Mandarino, Joseph A. (2003) New minerals. The Canadian Mineralogist, 41 (3) 803-828 doi:10.2113/gscanmin.41.3.803
Gucsik, A., Zhang, M., Koeberl, C., Salje, E. K. H., Redfern, S. A. T., Pruneda, J. M. (2004) Infrared and Raman spectra of ZrSiO4 experimentally shocked at high pressures. Mineralogical Magazine, 68 (5) 801-811 doi:10.1180/0026461046850220
GLASS, Billy P., FRIES, Marc (2008) Micro-Raman spectroscopic study of fine-grained, shock-metamorphosed rock fragments from the Australasian microtektite layer. Meteoritics & Planetary Science, 43 (9) 1487-1496 doi:10.1111/j.1945-5100.2008.tb01023.x
Chen, Ming, Yin, Feng, Li, Xiaodong, Xie, Xiande, Xiao, Wansheng, Tan, Dayong (2013) Natural occurrence of reidite in the Xiuyan crater of China. Meteoritics & Planetary Science, 48 (5) 796-805 doi:10.1111/maps.12106
Reddy, S.M., Johnson, T.E., Fischer, S., Rickard, W.D.A., Taylor, R.J.M. (2015) Precambrian reidite discovered in shocked zircon from the Stac Fada impactite, Scotland. Geology, 43 (10) 899-902 doi:10.1130/g37066.1
Localities for Reidite
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.
Atlantic Ocean (TL) | |
| Glass et al. (2002) |
| Glass et al. (2002) | |
| Glass et al. (2002) | |
Australia | |
| Erickson et al. (2020) |
| Cox et al. (2018) |
Barbados (TL) | |
| Glass et al. (2002) |
Canada | |
| Jurak et al. (2020, March) |
| Edahbi et al. (2018) +1 other reference |
China | |
| Yin +3 other references |
Egypt | |
| Aaron J. Cavosie +1 other reference |
France | |
| Plan et al. (2021) |
Germany | |
| Tschauner +3 other references |
| Gucsik (2006) | |
| Thomas et al. (2022) |
India | |
| Raychaudhuri et al. (2021, March) |
Mexico | |
| Zhao et al. (2021) |
Nicaragua | |
| Rochette et al. (2019) |
Oman | |
| Xing et al. (2020) |
Sweden | |
| Martell et al. (2021) |
UK | |
| Plan et al. (2022, August) |
| Reddy et al. (2015) |
USA | |
| French et al. (2004) |
Quick NavTopUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Epitaxial Relationships X-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesRelationshipsCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List