Katayamalite
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Formula:
KLi3Ca7Ti2(SiO3)12(OH)2
Crystal System:
Monoclinic
Name:
Named in honor of Nobuo Katayama (片山信夫) (17 January 1910, Tokyo, Japan - 4 March 1997), mineralogist and professor at the Tokyo Imperial University and later at Kyushu University.
Described as the hydroxyl analogue of baratovite, which had originally been described as fluor-dominant. Some mineralogists now claim that baratovite is also hydroxyl- rather than fluor-dominant, and that baratovite and katayamalite are therefore the same species, with the name baratovite having priority. At present this situation has not been clarified and katayamalite remains an IMA-approved species.
Originally described as having a triclinic symmetry (space group C-1) by Kato & Murakami (1985). The structure was redetermined with monoclinic symmetry (space group C2/c) by Andrada et al. (2013).
Originally described as having a triclinic symmetry (space group C-1) by Kato & Murakami (1985). The structure was redetermined with monoclinic symmetry (space group C2/c) by Andrada et al. (2013).
Classification of Katayamalite
Approved
Approval Year:
1982
9.CJ.25
9 : SILICATES (Germanates)
C : Cyclosilicates
J : [Si6O18]12- 6-membered single rings (sechser-Einfachringe), without insular complex anions
9 : SILICATES (Germanates)
C : Cyclosilicates
J : [Si6O18]12- 6-membered single rings (sechser-Einfachringe), without insular complex anions
Pronounciation of Katayamalite
Pronounciation:
| Play | Recorded by | Country |
|---|---|---|
| Jolyon & Katya Ralph | United Kingdom |
Chemical Properties of Katayamalite
Formula:
KLi3Ca7Ti2(SiO3)12(OH)2
Crystallography of Katayamalite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Setting:
C2/c
Cell Parameters:
a = 16.9093(10) Å, b = 9.7287(5) Å, c = 20.9019(12) Å
β = 112.396(3)°
β = 112.396(3)°
Ratio:
a:b:c = 1.738 : 1 : 2.148
Unit Cell V:
3,179.12 ų (Calculated from Unit Cell)
Z:
4
Morphology:
platy
Type Occurrence of Katayamalite
Geological Setting of Type Material:
aegirine syenite
Associated Minerals at Type Locality:
Synonyms of Katayamalite
Other Language Names for Katayamalite
Common Associates
Associated Minerals Based on Photo Data:
Related Minerals - Nickel-Strunz Grouping
| 9.CJ.05 | Bazzite | Be3Sc2(Si6O18) | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
| 9.CJ.05 | Beryl | Be3Al2(Si6O18) | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
| 9.CJ.05 | Indialite | Mg2Al3(AlSi5O18) | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
| 9.CJ.05 | Stoppaniite | Be3Fe3+2(Si6O18) · H2O | Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc |
| 9.CJ.10 | Cordierite | (Mg,Fe)2Al3(AlSi5O18) | Orth. mmm (2/m 2/m 2/m) : Cccm |
| 9.CJ.10 | Sekaninaite | (Fe,Mg)2Al3(AlSi5O18) | Orth. |
| 9.CJ.15a | Combeite | Na2Ca2(Si6O18)0.5 | Trig. 3m (3 2/m) : R3m |
| 9.CJ.15b | Imandrite | Na12Ca3Fe3+2(Si6O18)2 | Orth. |
| 9.CJ.15a | Kazakovite | Na6Mn2+Ti(Si6O18) | Trig. |
| 9.CJ.15c | Koashvite | Na6(Ca,Mn)(Ti,Fe)Si6O18 · H2O | Orth. |
| 9.CJ.15a | Lovozerite | Na2Ca(Zr,Ti)(Si6O12)[(OH)4O2] · H2O | Mon. |
| 9.CJ.15a | Tisinalite | Na3H3(Mn,Ca,Fe)TiSi6(O,OH)18 · 2H2O | Trig. |
| 9.CJ.15a | Zirsinalite | Na6(Ca,Mn2+,Fe2+)Zr(Si6O18) | Trig. |
| 9.CJ.15a | Litvinskite | Na2(◻,Na,Mn)ZrSi6O12(OH,O)6 | Mon. m : Bm |
| 9.CJ.15a | Kapustinite | Na5(Na,Mn2+)<1Zr(H2Si6O18) | Mon. 2/m |
| 9.CJ.25 | Baratovite | KCa7(Ti,Zr)2Li3Si12O36F2 | Mon. |
| 9.CJ.25 | Aleksandrovite | KCa7Sn2Li3Si12O36F2 | Mon. 2/m : B2/b |
| 9.CJ.30 | Dioptase | CuSiO3 · H2O | Trig. 3 : R3 |
| 9.CJ.35 | Kostylevite | K2Zr(Si3O9) · H2O | Mon. |
| 9.CJ.40 | Petarasite | Na5Zr2(Si6O18)(Cl,OH) · 2H2O | Mon. 2/m : P21/m |
| 9.CJ.45 | Gerenite-(Y) | (Ca,Na)2(Y,REE)3Si6O18 · 2H2O | Tric. |
| 9.CJ.50 | Odintsovite | K2Na4Ca3Ti2Be4Si12O38 | Orth. |
| 9.CJ.55 | Mathewrogersite | Pb7FeAl3GeSi12O36(OH,H2O)6 | Trig. |
| 9.CJ.60 | Pezzottaite | Cs(Be2Li)Al2(Si6O18) | Trig. 3 : R3 |
Fluorescence of Katayamalite
brilliant blue-white under SW
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 Katayamalite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Murakami, N., Kato, T., Hirowatari, F. (1983) Katayamalite, a new Ca-Li-Ti silicate mineral from Iwagi Islet, Southwest Japan. Mineralogical Journal: 11: 261-268.
Dunn, P.J., Fleischer, M., Francis, C.A., Langley, R.H., Kissin, S.A., Shigley, J.E., Vanko, D.A., Zilczer, J.A. (1984) New mineral names. American Mineralogist: 69: 810-815.
Kato, T., Murakami, N. (1985) The crystal structure of katayamalite. Mineralogical Journal: 12(5): 206-217.
Baur, W.H., Kassner, D. (1992) Katayamalite and baratovite are structurally identical. European Journal of Mineralogy: 4: 839-841.
Jambor, J.L., Puziewicz, J. (1993) New mineral names. American Mineralogist: 78: 450-455.
Andrade, M.B., Doell, D., Downs, R.T., Yang, H. (2013) Redetermination of katayamalite, KLi3Ca7Ti2(SiO3)12(OH)2. Acta Crystallographica: E69: i41-i41.
Internet Links for Katayamalite
mindat.org URL:
https://www.mindat.org/min-4716.html
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External Links:
Mineral Dealers:
Localities for Katayamalite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for 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.
Japan (TL) | |
| Murakami et al. (1983): Mineralogical Journal 11, 261-268; Am. Min. 69, 811-812 (1984); Toshio Kato and Nobuhide Murakami (1985) The crystal structure of katayamalite. Mineralogical Journal 12, #5, 206-217. |
Iwagi Island, Inland Sea, Ehime Prefecture, Japan