Rhodesite Group
A group of related mineral species
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About Rhodesite Group
A mero-plesiotype series.
Wickenburgite (reported to be forming a solid solution with monteregianite-(Y) possibly also belongs here.
Wickenburgite (reported to be forming a solid solution with monteregianite-(Y) possibly also belongs here.
Unique Identifiers
Mindat ID:
54045
Long-form identifier:
mindat:1:1:54045:2
Chemical Analysis
Oxide wt%:
| 1 | |
|---|---|
| Na2O | 10.08 % |
| K2O | 1.72 % |
| CaO | 0.24 % |
| BaO | 0.32 % |
| MnO | 0.10 % |
| Al2O3 | 6.86 % |
| Y2O3 | 0.35 % |
| Yb2O3 | 0.55 % |
| SiO2 | 56.23 % |
| ZrO2 | 14.78 % |
| H2O | 9.52 % |
| Total: | 100.75 % |
Empirical formulas:
| Sample ID | Empirical Formula |
|---|---|
| 1 | Na0.38Ca0.02Mn0.01)2(Na0.70K0.28Ba0.02)Σ1.00(Zr0.91Y0.02Yb0.02)Σ0.95(Si7.08Al1.02)Σ8.10O19 · 4H2O |
Sample references:
| ID | Locality | Reference | Notes |
|---|---|---|---|
| 1 | Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada | empirical formula basis: 23 oxygen atoms; average of 8 analyses |
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0015364 | Delhayelite | Cannillo E, Rossi G, Ungaretti L (1970) The crystal structure of delhayelite Rendiconti della Societa Italiana di Mineralogia e Petrologia 26 63-75 | 1970 | 0 | 293 | ||
| 0001072 | Monteregianite-(Y) | Ghose S, Sen Gupta P K, Campana C F (1987) Symmetry and crystal structure of monteregianite, Na4K2Y2Si16O38.10H2O, a double-sheet silicate with zeolitic properties no longer have the original data, so they cannot check American Mineralogist 72 365-374 |  | 1987 | 0 | 293 | |
| 0011013 | Rhodesite | Hesse K F, Liebau F, Merlino S (1992) Crystal structure of rhodesite, HK1-xNax+2yCa2-y{lB,3,2}[Si8O19]*(6-z)H2O, from three localities and its relation to other silicates with dreier double layers Zeitschrift fur Kristallographie 199 25-48 | | 1992 | Zeilberg, Germany | 0 | 293 |
| 0011014 | Rhodesite | Hesse K F, Liebau F, Merlino S (1992) Crystal structure of rhodesite, HK1-xNax+2yCa2-y(lB,3,22)(Si8O19)*(6-z)H2O, from three localities and its relation to other silicates with dreier double layers Zeitschrift fur Kristallographie 199 25-48 | | 1992 | Trinity County, California, USA | 0 | 293 |
| 0011015 | Rhodesite | Hesse K F, Liebau F, Merlino S (1992) Crystal structure of rhodesite, HK1-xNax+2yCa2-y(lB,3,22)(Si8O19)*(6-z)H2O, from three localities and its relation to other silicates with dreier double layers Zeitschrift fur Kristallographie 199 25-48 | | 1992 | San Venanzo, Italy | 0 | 293 |
CIF Raw Data - click here to close
Relationship of Rhodesite Group to other Species
Rhodesite Group Members:
| Delhayelite | (Na,K)10Ca5Al6Si32O80(Cl2,F2,SO4)3 · 18H2O | Orth. |
| Fivegite | K4Ca2[AlSi7O17(O2-xOHx)][(H2O)2-xOHx]Cl | Orth. mm2 : Pmn21 |
| Hydrodelhayelite | KCa2AlSi7O17(OH)2 · 6H2O | Orth. mm2 |
| Melansonite | Na◻KZrSi8O19 · 5H2O | Orth. mmm (2/m 2/m 2/m) : Pmma |
| Monteregianite-(Y) | (Na,K)6(Y,Ca)2Si16O38 · 10H2O | Mon. 2/m |
| Natromelansonite | Na3Zr[Si7AlO19] · 4H2O | Mon. 2/m : P21/m |
| Rhodesite | KHCa2Si8O19 · 5H2O | Orth. mmm (2/m 2/m 2/m) |
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 Rhodesite Group
mindat.org URL:
https://www.mindat.org/min-54045.html
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References for Rhodesite Group
Reference List:
Ferraris, G.; Gula, A. (2005) Polysomatic Aspects of Microporous Minerals - Heterophyllosilicates, Palysepioles and Rhodesite-Related Structures. Reviews in Mineralogy and Geochemistry, 57 (1). 69-104 doi:10.2138/rmg.2005.57.3
Cadoni, Marcella, Ferraris, Giovanni (2009) Two new members of the rhodesite mero-plesiotype series close to delhayelite and hydrodelhayelite: synthesis and crystal structure. European Journal of Mineralogy, 21 (2) 485-493 doi:10.1127/0935-1221/2009/0021-1918
Localities for Rhodesite Group
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.
Austria | |
| [Rhodesite] Exel (1993) +1 other reference |
| [Rhodesite] Postl (1987) +2 other references |
| [Rhodesite] Taucher (1989) |
Canada | |
| [Monteregianite-(Y)] Chao (1978) +2 other references |
DR Congo | |
| [Delhayelite] Richard +15 other references |
| [Delhayelite] Mineralogical Magazine (1959) | |
Germany | |
| [Rhodesite] Jakob (1976) +2 other references |
| [Rhodesite] Personal information of Erich Keck +1 other reference |
| [Rhodesite] |
| [Rhodesite] Blaß et al. (1996) |
Italy | |
| [Hydrodelhayelite] Stoppa et al. (2014) |
Morocco | |
| [Delhayelite] Berger et al. (2009) | |
Russia | |
| [Delhayelite] Pekov (1998) |
| [Delhayelite] Yakovenchuk et al. (2005) | |
| [Delhayelite] [World of Stones 95:5-6 | |
| [Delhayelite] Pekov (1998) | |
| [Delhayelite] Arzamastsev et al. (2008) +1 other reference | |
| [Delhayelite] Pekov (1998) +1 other reference | |
| [Hydrodelhayelite] World of Stones 95: 5-6 +2 other references |
| [Delhayelite] Pavel Kartashov specimens. +3 other references | |
| [Delhayelite] Pekov (1998) | |
| [Delhayelite] Khomyakov et al. (1983) +1 other reference | |
South Africa | |
| [Rhodesite] Mountain (1957) +1 other reference |
Tanzania | |
| [Delhayelite] Dawson (1998) |
Ukraine | |
| [Rhodesite] Baranov et al. (2009) | |
USA | |
| [Rhodesite] Färber (n.d.) |
| [Rhodesite] Sheppard et al. (1969) +3 other references |
Stradner Kogel, Wilhelmsdorf, Bad Gleichenberg, Südoststeiermark District, Styria, Austria