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Elkinstantonite
A valid IMA mineral species
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About Elkinstantonite
Lindy Elkins-Tanton
Formula:
Fe4(PO4)2O
Colour:
light brown
Specific Gravity:
4.22 (Calculated)
Crystal System:
Monoclinic
Name:
Named in honor of Lindy Elkins-Tanton, a planetary scientist and professor. Her research concerns terrestrial planetary evolution. She is Arizona State University Vice President of the Interplanetary Initiative. She is also the Principal Investigator of NASA's Psyche mission to explore the metallic asteroid 16 Psyche.
Type Locality:
Unique Identifiers
Mindat ID:
470462
Long-form identifier:
mindat:1:1:470462:7
IMA Classification of Elkinstantonite
Approved
IMA Formula:
Fe2+4(PO4)2O
Approval year:
2022
Approval history:
IMA 2022-088
Classification of Elkinstantonite
8.BC.
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
C : With only medium-sized cations, (OH, etc.):RO4 > 1:1 and < 2:1
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
C : With only medium-sized cations, (OH, etc.):RO4 > 1:1 and < 2:1
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 |
|---|---|---|
| Elk | 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 Elkinstantonite
Transparency:
Transparent
Colour:
Light brown
Density:
4.22 g/cm3 (Calculated)
Chemistry of Elkinstantonite
Mindat Formula:
Fe4(PO4)2O
Element Weights:
Elements listed:
Crystallography of Elkinstantonite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/c
Setting:
P21/c
Cell Parameters:
a = 6.56(1) Å, b = 11.27(1) Å, c = 9.38(1) Å
β = 104.0(1)°
β = 104.0(1)°
Ratio:
a:b:c = 0.582 : 1 : 0.832
Unit Cell V:
672.88 ų (Calculated from Unit Cell)
Z:
4
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.063 Å | (25) |
| 2.929 Å | (60) |
| 2.869 Å | (78) |
| 2.822 Å | (45) |
| 2.817 Å | (100) |
| 2.671 Å | (64) |
| 2.508 Å | (30) |
| 1.849 Å | (28) |
Type Occurrence of Elkinstantonite
General Appearance of Type Material:
subhedral grains ~10 to 20 μm in size, associated with troilite and wüstite symplectites, troilite, and elaliite
Place of Conservation of Type Material:
Type material is deposited in the meteorite collections of the Department of Earth and Atmospheric Sciences, University of Alberta, 1-26 Earth Sciences Building, Edmonton, Alberta, T6G 2E3, Canada, accession number MET11814
Geological Setting of Type Material:
meteorite belongs to the IAB Complex group of iron meteorites
Associated Minerals at Type Locality:
Synonyms of Elkinstantonite
Other Language Names for Elkinstantonite
Dutch:Elkinstantoniet
German:Elkinstantonit
Common Associates
Associations Based on Photo Data:
Related Minerals - Strunz-mindat Grouping
| 8.BC. | Manganrockbridgeite | Mn2+2Fe3+3(PO4)3(OH)4(H2O) |
| 8.BC. | Elaliite | (Fe2+8Fe3+)(PO4)O8 |
| 8.BC.05 | Leybovite-K | KCuNa(MgFe3+)(AsO4)3 |
| 8.BC.05 | Angelellite | Fe3+4(AsO4)2O3 |
| 8.BC.10 | Frondelite | (Mn2+0.5Fe3+0.5)2Fe3+3(PO4)3(OH)5 |
| 8.BC.10 | Rockbridgeite | (Fe2+0.5Fe3+0.5)2Fe3+3(PO4)3(OH)5 |
| 8.BC.10 | Ferrirockbridgeite | (Fe3+0.67◻0.33)2(Fe3+)3(PO4)3(OH)4(H2O) |
| 8.BC.10 | Ferrorockbridgeite | (Fe2+,Mn2+)2(Fe3+)3(PO4)3(OH)4(H2O) |
| 8.BC.10 | Plimerite | ZnFe3+4(PO4)3(OH)5 |
| 8.BC.15 | Aerugite | Ni8.5(AsO4)2As5+O8 |
Other Information
Notes:
did not show visible cathodoluminescence.
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 Elkinstantonite
mindat.org URL:
https://www.mindat.org/min-470462.html
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References for Elkinstantonite
Reference List:
www.ualberta.ca (n.d.) https://www.ualberta.ca/folio/2022/11/new-minerals-discovered-in-massive-meteorite-may-reveal-clues-to-asteroid-formation.html
Localities for Elkinstantonite
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.
Somalia (TL) | |
| Miyawaki et al. (2022) +2 other references |
Quick NavTopAbout ElkinstantoniteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Chemistry Crystallography X-Ray Powder DiffractionType Occurrence SynonymsOther LanguagesCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
El Ali meteorite, Hiran Region, Somalia