Ferri-hellandite-(Ce)
A valid IMA mineral species - pending publication
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About Ferri-hellandite-(Ce)
Formula:
(Ca3Ce)Ce2Fe3+◻2B4Si4O22(OH)2
Crystal System:
Monoclinic
Member of:
Name:
Named for being the Fe3+ analogue of hellandite-(Ce). The hellandite root is for Amund Theodor Helland (October 11, 1846 Bergen, Norway - November 15, 1918 Oslo "Kristiania", Norway), professor of geology and geography at the Royal Frederick University (University of Oslo). The -(Ce) suffix follows the IMA nomenclature for noting the dominant rare earth element.
Unique Identifiers
Mindat ID:
55376
Long-form identifier:
mindat:1:1:55376:6
Similar Names
| Ferrihollandite | A valid IMA mineral species | Ba(Mn64+Fe23+)O16 |
IMA Classification of Ferri-hellandite-(Ce)
Approved, Pending publication
IMA Formula:
(Ca3Ce3+)Ce3+2Fe3+◻2B4Si4O22(OH)2
Approval year:
2021
Classification of Ferri-hellandite-(Ce)
9.DK.
9 : SILICATES (Germanates)
D : Inosilicates
K : Inosilicates with 5-periodic single chains
9 : SILICATES (Germanates)
D : Inosilicates
K : Inosilicates with 5-periodic single chains
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 |
|---|---|---|
| Fhld-Ce | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Chemistry of Ferri-hellandite-(Ce)
Mindat Formula:
(Ca3Ce)Ce2Fe3+◻2B4Si4O22(OH)2
Element Weights:
Crystallography of Ferri-hellandite-(Ce)
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P2/b
Setting:
P2/a
Cell Parameters:
a = 19.1616(2) Å, b = 4.7561(1) Å, c = 10.34016(1) Å
β = 111.173(1)°
β = 111.173(1)°
Ratio:
a:b:c = 4.029 : 1 : 2.174
Unit Cell V:
878.73 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 8.934 Å | (37) |
| 3.466 Å | (37) |
| 3.246 Å | (33) |
| 3.101 Å | (34) |
| 2.929 Å | (37) |
| 2.861 Å | (44) |
| 2.658 Å | (100) |
| 1.910 Å | (44) |
Type Occurrence of Ferri-hellandite-(Ce)
Place of Conservation of Type Material:
Mineralogical collections of the Natural History Museum, University of Oslo, P.O. Box 1172, Blindern, 0318 Oslo, Norway, catalogue number KNR 44259 (XRD), and the Moravian Museum, Department of Mineralogy and Petrology, Zelný trh 6, Brno, Czech Republic, catalogue number B12258 (EMPA)
Synonyms of Ferri-hellandite-(Ce)
Other Language Names for Ferri-hellandite-(Ce)
Dutch:Ferri-hellandiet-(Ce)
German:Ferri-Hellandit-(Ce)
Relationship of Ferri-hellandite-(Ce) to other Species
Member of:
Other Members of Hellandite Group:
| Ciprianiite | Ca4[(Th,U),Ca]Σ2Al(Be0.5◻1.5)Σ2[B4Si4O22](OH)2 | Mon. 2/m : P2/b |
| Ferri-mottanaite-(Ce) | Ca4Ce2Fe3+(Be1.5◻0.5)[Si4B4O22]O2 | Mon. 2/m : P2/b |
| Hellandite-(Ce) | (Ca,REE)4Ce2Al◻2(B4Si4O22) (OH)2 | Mon. 2/m |
| Hellandite-(Y) | (Ca,REE)4Y2Al◻2(B4Si4O22) (OH)2 | Mon. 2/m : P2/b |
| Mottanaite-(Ce) | Ca4(Ce,REE)Σ2Al(Be1.5◻0.5)Σ2[B4Si4O22]O2 | Mon. 2/m |
| Tadzhikite-(Ce) | Ca4Ce3+2Ti◻2(B4Si4O22)(OH)2 | Mon. 2/m : P2/b |
Common Associates
Associations Based on Photo Data:
| 2 photos of Ferri-hellandite-(Ce) associated with Zirsilite-(Ce) | Na11-12(Ce,Na)3Ca6Mn3Zr3Nb(Si19O55)(Si3O9)2(CO3)(OH)3 · H2O |
| 1 photo of Ferri-hellandite-(Ce) associated with Zircon | Zr(SiO4) |
Related Minerals - Strunz-mindat Grouping
| 9.DK. | Ferrorhodonite | CaMn3Fe[Si5O15] |
| 9.DK. | Vittinkiite | MnMn3Mn[Si5O15] |
| 9.DK. | Shijiangshanite | Pb3CaAl(Si5O14)(OH)3 · 3H2O |
| 9.DK.05 | Nambulite | LiMn2+4Si5O14(OH) |
| 9.DK.05 | Marsturite | NaCaMn3Si5O14(OH) |
| 9.DK.05 | Natronambulite | (Na,Li)(Mn,Ca)4Si5O14OH |
| 9.DK.05 | Rhodonite | CaMn3Mn[Si5O15] |
| 9.DK.05 | Scandiobabingtonite | (Ca,Na)2(Fe2+,Mn)(Sc,Fe3+)Si5O14(OH) |
| 9.DK.05 | Lithiomarsturite | LiCaMn3Si5O14(OH) |
| 9.DK.05 | Manganbabingtonite | Ca2Mn2+Fe3+Si5O14(OH) |
| 9.DK.05 | Fowlerite | (Mn2+,Zn,Ca)SiO3 |
| 9.DK.05 | Babingtonite | Ca2Fe2+Fe3+Si5O14(OH) |
| 9.DK.10 | Santaclaraite | CaMn4[Si5O14OH](OH) · H2O |
| 9.DK.15 | Saneroite | NaMn2+5[Si5O14(OH)](VO3)(OH) |
| 9.DK.20 | Ferri-mottanaite-(Ce) | Ca4Ce2Fe3+(Be1.5◻0.5)[Si4B4O22]O2 |
| 9.DK.20 | Tadzhikite-(Ce) | Ca4Ce3+2Ti◻2(B4Si4O22)(OH)2 |
| 9.DK.20 | 'Hellandite-(Yb)' | (Ca,Y)4(Yb,Y)2(Al,Fe3+,Ti4+)(Be,Li)2[B4Si4O22](O,F,OH)2 |
| 9.DK.20 | Mottanaite-(Ce) | Ca4(Ce,REE)Σ2Al(Be1.5◻0.5)Σ2[B4Si4O22]O2 |
| 9.DK.20 | Ciprianiite | Ca4[(Th,U),Ca]Σ2Al(Be0.5◻1.5)Σ2[B4Si4O22](OH)2 |
| 9.DK.20 | Hellandite-(Y) | (Ca,REE)4Y2Al◻2(B4Si4O22) (OH)2 |
| 9.DK.20 | Hellandite-(Ce) | (Ca,REE)4Ce2Al◻2(B4Si4O22) (OH)2 |
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 Ferri-hellandite-(Ce)
mindat.org URL:
https://www.mindat.org/min-55376.html
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References for Ferri-hellandite-(Ce)
Localities for Ferri-hellandite-(Ce)
Showing 1 localities.
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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.
Norway (TL) | |
| Miyawaki et al. (2021) +1 other reference |
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Sagåsen Quarry, Sagåsen, Auenlandet, Porsgrunn, Telemark, Norway