Ferri-fluoro-katophorite
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About Ferri-fluoro-katophorite
Formula:
Na(CaNa)(Mg4Fe3+)(AlSi7O22)F2
The katophorite group minerals are sodium-calcium amphiboles defined with A(Na+K+2Ca)> 0.5 apfu and 0.5 apfu < C(Al+Fe3++2Ti) < 1.5 apfu.
Fluoro-katophorite is defined with
A position: Na dominant
C2+ position: Mg dominant
C3+ position: Fe dominant
W position: F dominant
Fluoro-katophorite is defined with
A position: Na dominant
C2+ position: Mg dominant
C3+ position: Fe dominant
W position: F dominant
Crystal System:
Monoclinic
Member of:
This page provides mineralogical data about Ferri-fluoro-katophorite.
Classification of Ferri-fluoro-katophorite
Approved, Pending publication
Approval Year:
2015
Chemical Properties of Ferri-fluoro-katophorite
Formula:
Na(CaNa)(Mg4Fe3+)(AlSi7O22)F2
The katophorite group minerals are sodium-calcium amphiboles defined with A(Na+K+2Ca)> 0.5 apfu and 0.5 apfu < C(Al+Fe3++2Ti) < 1.5 apfu.
Fluoro-katophorite is defined with
A position: Na dominant
C2+ position: Mg dominant
C3+ position: Fe dominant
W position: F dominant
The katophorite group minerals are sodium-calcium amphiboles defined with A(Na+K+2Ca)> 0.5 apfu and 0.5 apfu < C(Al+Fe3++2Ti) < 1.5 apfu.
Fluoro-katophorite is defined with
A position: Na dominant
C2+ position: Mg dominant
C3+ position: Fe dominant
W position: F dominant
IMA Formula:
Na(NaCa)(Mg4Fe3+)(Si7Al)O22F2
Crystallography of Ferri-fluoro-katophorite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 9.887(3) Å, b = 18.023(9) Å, c = 5.292(2) Å
β = 104.66(3)°
β = 104.66(3)°
Ratio:
a:b:c = 0.549 : 1 : 0.294
Unit Cell V:
912.30 ų (Calculated from Unit Cell)
Comment:
Data from the 2015 IMA proposal
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 8.449 | (69) |
| 3.388 | (74) |
| 3.139 | (72) |
| 2.739 | (47) |
| 2.708 | (100) |
| 2.591 | (53) |
| 2.540 | (65) |
| 2.165 | (45) |
| ( |
Comments:
Data from the 2015 IMA proposal.
Type Occurrence of Ferri-fluoro-katophorite
Place of Conservation of Type Material:
Mineralogical collections of the Department of Natural History, Royal Ontario Museum, Canada (catalogue number M57071)
Synonyms of Ferri-fluoro-katophorite
Relationship of Ferri-fluoro-katophorite to other Species
Member of:
Other Members of this group:
| Ferri-katophorite | Na(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2 | Mon. |
| Ferro-ferri-fluoro-katophorite | Na(CaNa)(Fe2+4Fe3+)(AlSi7O22)F2 | Mon. |
| Ferro-ferri-katophorite | Na(NaCa)(Fe2+4Fe3+)(Si7Al)O22(OH)2 | Mon. 2/m : B2/m |
| Ferro-fluoro-katophorite | Na(CaNa)(Fe2+4Al)(AlSi7O22)F2 | |
| Ferro-katophorite | {Na}{CaNa}{Fe2+4Al}[(AlSi7)O22](OH)2 | |
| Fluoro-katophorite | Na(CaNa)(Mg4Al)(AlSi7O22)F2 | Mon. |
| Katophorite | {Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2 | Mon. 2/m : B2/m |
| Potassic-ferri-katophorite | K(CaNa)(Mg4Fe3+)(AlSi7O22)(OH)2 | |
| Potassic-ferro-ferri-katophorite | {K}{CaNa}{Fe2+4Fe3+}[(AlSi7)O22](OH)2 | |
| Potassic-fluoro-katophorite | K(CaNa)(Mg4Al)(AlSi7O22)F2 |
Common Associates
Associated Minerals Based on Photo Data:
| Fluorapatite | 6 photos of Ferri-fluoro-katophorite associated with Fluorapatite on mindat.org. |
| Calcite | 4 photos of Ferri-fluoro-katophorite associated with Calcite on mindat.org. |
| Scapolite | 3 photos of Ferri-fluoro-katophorite associated with Scapolite on mindat.org. |
| Titanite | 2 photos of Ferri-fluoro-katophorite associated with Titanite on mindat.org. |
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.
References for Ferri-fluoro-katophorite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Hawthorne, F.C., Oberti, R., Martin, R.F. (2006) Short-range order in amphiboles from the Bear Lake Diggings, Ontario. The Canadian Mineralogist: 44: 1171-1179.
Hawthorne, F.C., Oberti, R., Harlow, G.E., Maresch, W.V., Martin, R.F., Schumacher, J.C., Welch, M.D. (2012) Nomenclature of the amphibole supergroup. American Mineralogist: 97: 2031-2048.
Oberti, R., Boiocchi, M., Hawthorne, F.C., Ball, N.A., Martin, R.F. (2016) Ferrifluoro-katophorite, IMA 2015-096. CNMNC Newsletter No. 29, February 2016, 203. Mineralogical Magazine: 80: 199–205.
Internet Links for Ferri-fluoro-katophorite
mindat.org URL:
https://www.mindat.org/min-39442.html
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Localities for Ferri-fluoro-katophorite
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The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
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? - 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.
Canada (TL) | |
| Hawthorne, F.C., Oberti, R., Martin, R.F. (2006): Short-range order in amphiboles from the Bear Lake Diggings, Ontario. Canadian Mineralogist, 44, 1171-1179. ; Oberti, R., Boiocchi, M., Hawthorne, F.C., Ball, N.A., Martin, R.F. (2016) Ferrifluoro-katophorite, IMA 2015-096. CNMNC Newsletter No. 29, February 2016, 203. Mineralogical Magazine: 80: 199–205 |
Bear Lake diggings, Monmouth Township, Haliburton Co., Ontario, Canada