Reidite
A valid IMA mineral species
This page kindly sponsored in memory of Dr Alan Reid AM
Alan F. Reid
Formula:
ZrSiO4
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 the scheelite 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
GUID
(UUID V4):
(UUID V4):
8d65515d-9b55-4ec1-b4b3-d64049a0c14f
IMA Classification of Reidite
Approved
IMA Formula:
Zr(SiO4)
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:
ZrSiO4
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:
Reference:
Glass, Billy P., Shaobin Liu, and P. B. Leavens (2002) Reidite: An impact-produced high-pressure polymorph of zircon found in marine sediments. American Mineralogist: 87: 562-565.
Synonyms of Reidite
Other Language Names for Reidite
Relationship of Reidite to other Species
Member of:
Other Members of this group:
| Coffinite | U(SiO4) · nH2O | Tet. 4/mmm (4/m 2/m 2/m) : I41/amd |
| Hafnon | HfSiO4 | 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 | Andradite | Ca3Fe3+2(SiO4)3 |
| 9.AD.25 | Almandine | Fe2+3Al2(SiO4)3 |
| 9.AD.25 | Calderite | Mn2+3Fe3+2(SiO4)3 |
| 9.AD.25 | Goldmanite | Ca3V3+2(SiO4)3 |
| 9.AD.25 | Grossular | Ca3Al2(SiO4)3 |
| 9.AD.25 | Henritermierite | Ca3Mn3+2(SiO4)2[◻(OH)4] |
| 9.AD.25 | Kimzeyite | Ca3Zr2(SiO4)(AlO4)2 |
| 9.AD.25 | Knorringite | Mg3Cr2(SiO4)3 |
| 9.AD.25 | Majorite | Mg3(MgSi)(SiO4)3 |
| 9.AD.25 | Morimotoite | Ca3(TiFe2+)(SiO4)3 |
| 9.AD.25 | Pyrope | Mg3Al2(SiO4)3 |
| 9.AD.25 | Schorlomite | Ca3Ti2(SiO4)(Fe3+O4)2 |
| 9.AD.25 | Spessartine | Mn2+3Al2(SiO4)3 |
| 9.AD.25 | Uvarovite | Ca3Cr2(SiO4)3 |
| 9.AD.25 | Wadalite | (Ca,Mg)6(Al,Fe3+)4((Si,Al)O4)3O4Cl3 |
| 9.AD.25 va | Hydrougrandite | (Ca,Mg,Fe2+)3(Fe3+,Al)2[(OH)4(SiO4)2] |
| 9.AD.25 va | Yamatoite | (Mn2+,Ca)3(V3+,Al)2(SiO4)3 |
| 9.AD.25 | Holtstamite | Ca3Al2(SiO4)2[◻(OH)4] |
| 9.AD.25 | Khoharite | Mg3Fe3+2(SiO4)3 |
| 9.AD.25 | Kerimasite | Ca3Zr2(SiO4)(Fe3+O4)2 |
| 9.AD.25 | Toturite | Ca3Sn2(SiO4)(Fe3+O4)2 |
| 9.AD.25 | Momoiite | Mn2+3V3+2(SiO4)3 |
| 9.AD.25 | Eringaite | Ca3Sc2(SiO4)3 |
| 9.AD.25 | Irinarassite | Ca3Sn2(SiO4)(AlO4)2 |
| 9.AD.25 | Menzerite-(Y) | (Y2Ca)Mg2(SiO4)3 |
| 9.AD.25 | Eltyubyuite | Ca12Fe3+10Si4O32Cl6 |
| 9.AD.25 | Blythite | Mn2+3Mn3+2[SiO4]3 |
| 9.AD.25 | Skiagite | Fe2+3Fe3+2[SiO4]3 |
| 9.AD.25 | Hutcheonite | Ca3Ti2(SiO4)(AlO4)2 |
| 9.AD.25 | UM1984-37-SiO:CrMn | Mn2+3Cr3+2(SiO4)3 |
| 9.AD.25 | Rubinite | Ca3Ti3+2Si3O12 |
| 9.AD.25 | Nikmelnikovite | Ca12(Fe2+Fe3+3Al3◻)[SiO4]6[◻(OH)4]5◻4 |
| 9.AD.25 | Midbarite | Ca3Mg2(V2Si)O12 |
| 9.AD.30 va | Auerlite | near Th(Si,P)O4 |
| 9.AD.30 | Coffinite | U(SiO4) · nH2O |
| 9.AD.30 | Hafnon | HfSiO4 |
| 9.AD.30 | Thorite | Th(SiO4) |
| 9.AD.30 | Zircon | Zr(SiO4) |
| 9.AD.30 | Stetindite-(Ce) | Ce(SiO4) |
| 9.AD.35 | Huttonite | ThSiO4 |
| 9.AD.35 | Tombarthite-(Y) | Y4(Si,H4)4O12-x(OH)4+2x |
| 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
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) | |
| B.P. Glass (2002) |
| B.P. Glass (2002) | |
| B.P. Glass (2002) | |
Australia | |
| Erickson et al. (2020) |
| Cox et al. (2018) |
Barbados (TL) | |
| B.P. Glass (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) |
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) |
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