Hydrodelhayelite (original) (raw)
A valid IMA mineral species
About HydrodelhayeliteHide
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Formula:
KCa2AlSi7O17(OH)2 · 6H2O
Crystal System:
Orthorhombic
Name:
Named for its composition and its relationship to delhayelite.
This page provides mineralogical data about Hydrodelhayelite.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:1971:8
fee049b9-f1f7-4631-b787-580c793ddc01
IMA Classification of HydrodelhayeliteHide
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IMA Formula:
KCa2(Si7Al)O17(OH)2 · 6H2O
Type description reference:
Classification of HydrodelhayeliteHide
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9.EB.10
9 : SILICATES (Germanates)
E : Phyllosilicates
B : Double nets with 4- and 6-membered rings
72.5.1.5
72 : PHYLLOSILICATES Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
5 : Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings with corrugated and complex layers
17.10.10
17 : Silicates Containing other Anions
10 : Silicates with sulphate, molybdate or tungstate
Mineral SymbolsHide
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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Hdhy | 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 HydrodelhayeliteHide
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Cleavage:
Perfect
{010} perfect, {100} and {001} imperfect
Density:
2.168 g/cm3 (Measured) 2.22 g/cm3 (Calculated)
Optical Data of HydrodelhayeliteHide
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RI values:
_n_α = 1.503 _n_γ = 1.518
δ = 0.015
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Dispersion:
relatively strong
Chemistry of HydrodelhayeliteHide
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Mindat Formula:
KCa2AlSi7O17(OH)2 · 6H2O
Common Impurities:
Ti,Fe,Mn,Mg,Sr,Na,Cl
Crystallography of HydrodelhayeliteHide
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Crystal System:
Orthorhombic
Class (H-M):
m _m_2 - Pyramidal
Cell Parameters:
a = 6.6483 Å, b = 23.8462 Å, c = 7.0727 Å
Ratio:
a:b:c = 0.279 : 1 : 0.297
Unit Cell V:
1,121.28 ų (Calculated from Unit Cell)
Comment:
Space Group: Pnm21
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.923 Å | (100) |
| 3.069 Å | (75) |
| 2.800 Å | (55) |
| 3.319 Å | (43) |
| 6.79 Å | (38) |
Geological EnvironmentHide
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Type Occurrence of HydrodelhayeliteHide
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General Appearance of Type Material:
grayish-white alteration product of delhayelite
Place of Conservation of Type Material:
Mining Institute, St. Petersburg, 1178/1; A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, 79785.
Geological Setting of Type Material:
Supergene zone of an ijolite-urtite pegmatite in an alkaline massif
Associated Minerals at Type Locality:
Reference:
Dorfman, M.D., Chiragov, M.I. (1979) Hydrodelhayelite, a product of supergene alteration of delhayelite. Novye dannye o mineralakh. Nauka, SSSR (New Data on Minerals of the USSR): 28: 172-175.
Synonyms of HydrodelhayeliteHide
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Other Language Names for HydrodelhayeliteHide
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Relationship of Hydrodelhayelite to other SpeciesHide
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Other Members of this group:
Common AssociatesHide
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Associated Minerals Based on Photo Data:
| 5 photos of Hydrodelhayelite associated with Eudialyte | Na15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2 |
|---|---|
| 1 photo of Hydrodelhayelite associated with Hisingerite | Fe3+2(Si2O5)(OH)4 · 2H2O |
Related Minerals - Strunz-mindat GroupingHide
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| 9.EB. | Natromelansonite | Na3Zr[Si7AlO19] · 4H2O | Mon. 2/m : _P_21/m |
|---|---|---|---|
| 9.EB.05 | Macdonaldite | BaCa4Si16O36(OH)2 · 10H2O | Orth. |
| 9.EB.05 | Rhodesite | KHCa2Si8O19 · 5H2O | Orth. m m m _(_2/_m_2/_m_2/m ) |
| 9.EB.05 | Melansonite | Na◻KZrSi8O19 · 5H2O | Orth. m m m _(_2/_m_2/_m_2/m ) : P m m a |
| 9.EB.10 | Delhayelite | (Na,K)10Ca5Al6Si32O80(Cl2,F2,SO4)3 · 18H2O | Orth. |
| 9.EB.15 | Monteregianite-(Y) | (Na,K)6(Y,Ca)2Si16O38 · 10H2O | Mon. 2/m |
| 9.EB.20 | Carletonite | KNa4Ca4Si8O18(CO3)4(OH,F) · H2O | Tet. 4/m m m _(_4/_m_2/_m_2/m ) : _P_4/m b m |
| 9.EB.20 | Fluorcarletonite | KNa4Ca4Si8O18(CO3)4F · H2O | Tet. |
| 9.EB.25 | Günterblassite | (K,Ca,Ba)2(Fe,Ca,Mg,Na)[(Si,Al)13O25(OH)4] · 7H2O · | Orth. m _m_2 : P m _n_21 |
| 9.EB.25 | Umbrianite | K7Na2Ca2[Al3Si10O29]F2Cl2 | Orth. m m m _(_2/_m_2/_m_2/m ) : P m m n |
| 9.EB.25 | Hillesheimite | (K,Ca,Ba,◻)2(Mg,Fe,Ca,◻)2[(Si,Al )13O23(OH)6](OH) · 8H2O | Orth. m m m _(_2/_m_2/_m_2/m ) : P m m n |
| 9.EB.30 | Fivegite | K4Ca2[AlSi7O17(O2-xOHx)][(H2O)2-xOHx]Cl | Orth. m _m_2 : P m _n_21 |
Other InformationHide
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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 HydrodelhayeliteHide
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References for HydrodelhayeliteHide
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Reference List:
Hawthorne, Frank C., Jambor, John L., Bladh, Kenneth W., Burke, Ernst A. J., Grice, Joel D., Phillips, Don, Roberts, Andrew C., Schedler, Robert A., E., James (1987) New mineral names. American Mineralogist, 72 (9-10) 1023-1028
Localities for HydrodelhayeliteHide
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This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the 
symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
Locality ListHide
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- 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). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
| Italy | |
|---|---|
| Umbria Terni Province San Venanzo ⓘ Vispi Quarry | Stoppa et al. (2014) |
| Russia | |
| Murmansk Oblast Khibiny Massif Kukisvumchorr Mt ⓘ Kirovskii apatite mine | |
| Rasvumchorr Mt Rasvumchorr Mine ⓘ Apatitovyi Tsirk (TL) | World of Stones 95: 5-6 +2 other references |
| ⓘ Tsentral'nyi Mine | Pekov I.V. et al. (2010) +1 other reference |