Meliphanite
A valid IMA mineral species - grandfathered
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About Meliphanite
Formula:
(Ca,Na)2(Be,Al)[Si2O6(OH,F)]
Colour:
yellow, yellowish red, nearly colourless
Lustre:
Vitreous
Hardness:
5 - 5½
Crystal System:
Tetragonal
Name:
Named for the colour (Mel- = Greek for honey and honey-yellow) and the chemical relation to leucophanite.
Co-Type Localities:
This page provides mineralogical data about Meliphanite.
Unique Identifiers
Mindat ID:
2636
Long-form identifier:
mindat:1:1:2636:5
GUID
(UUID V4):
(UUID V4):
94a14447-a3e9-4af0-b6f8-49218dc6e429
IMA Classification of Meliphanite
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
Ca4(Na,Ca)4Be4AlSi7O24(F,O)4
First published:
1852
Classification of Meliphanite
9.DP.05
9 : SILICATES (Germanates)
D : Inosilicates
P : Transitional ino-phyllosilicate structures
9 : SILICATES (Germanates)
D : Inosilicates
P : Transitional ino-phyllosilicate structures
55.4.2.5
55 : SOROSILICATES Si2O7 Groups,Generally with no Additional Anions
4 : Si2O7 Groups, Generally with No Additional Anions with cations in [8] and lower coordination
55 : SOROSILICATES Si2O7 Groups,Generally with no Additional Anions
4 : Si2O7 Groups, Generally with No Additional Anions with cations in [8] and lower coordination
17.2.5
17 : Silicates Containing other Anions
2 : Silicates with fluoride
17 : Silicates Containing other Anions
2 : Silicates with fluoride
Mineral Symbols
As of 2021 there are now IMAâCNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Mph | IMAâCNMNC | Warr, L.N. (2021). IMAâCNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Meliphanite
Vitreous
Transparency:
Transparent, Translucent
Colour:
yellow, yellowish red, nearly colourless
Streak:
white
Hardness:
5 - 5½ on Mohs scale
Cleavage:
Perfect
Fracture:
Conchoidal
Optical Data of Meliphanite
Type:
Uniaxial (-)
RI values:
nω = 1.611 - 1.664 nε = 1.592 - 1.672
Max Birefringence:
δ = 0.019
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Chemistry of Meliphanite
Mindat Formula:
(Ca,Na)2(Be,Al)[Si2O6(OH,F)]
Common Impurities:
Mg,K,H2O
Crystallography of Meliphanite
Crystal System:
Tetragonal
Class (H-M):
4 - Disphenoidal
Space Group:
I4
Cell Parameters:
a = 10.51 Å, c = 9.88 Å
Ratio:
a:c = 1 : 0.94
Unit Cell V:
1,091.35 Ă
Âł (Calculated from Unit Cell)
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) |
---|---|---|---|---|---|---|---|
0005779 | Meliphanite | Grice J D, Hawthorne F C (2002) New data on meliphanite, Ca4(Na,Ca)4Be4AlSi7O24(F,O)4 The Canadian Mineralogist 40 971-980 | 2002 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
2.75 Ă | (100) |
2.96 Ă | (50) |
3.59 Ă | (40) |
2.346 Ă | (40) |
2.342 Ă | (40) |
2.316 Ă | (40) |
1.978 Ă | (40) |
Comments:
Stokkø Island, Langesundsfjord, Norway. ICDD 31-304.
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 4b: Highly evolved igneous rocks | >3.0 |
35 : Ultra-alkali and agpaitic igneous rocks |
Type Occurrence of Meliphanite
Co-Type Localities:
Place of Conservation of Type Material:
Technische Universität, Bergakademie, Freiberg, Germany, number 26856 (type).
Synonyms of Meliphanite
Other Language Names for Meliphanite
Common Associates
Associated Minerals Based on Photo Data:
9 photos of Meliphanite associated with Microcline | K(AlSi3O8) |
8 photos of Meliphanite associated with Fluorite | CaF2 |
6 photos of Meliphanite associated with Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
5 photos of Meliphanite associated with Homilite | Ca2(Fe2+,Mg)B2Si2O10 |
4 photos of Meliphanite associated with Sodalite | Na4(Si3Al3)O12Cl |
3 photos of Meliphanite associated with Quartz | SiO2 |
2 photos of Meliphanite associated with Aegirine-augite | (NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6 |
2 photos of Meliphanite associated with Nepheline | Na3K(Al4Si4O16) |
2 photos of Meliphanite associated with Pyrochlore Group | A2Nb2(O,OH)6Z |
2 photos of Meliphanite associated with Clinozoisite | (CaCa)(AlAlAl)O[Si2O7][SiO4](OH) |
Related Minerals - Strunz-mindat Grouping
9.DP. | Ferriprehnite | Ca2Fe3+(Si3AlO10)(OH)2 |
9.DP.15 | Leucosphenite | BaNa4Ti2B2Si10O30 |
9.DP.20 | Prehnite | Ca2Al2Si3O10(OH)2 |
9.DP.25 | Amstallite | CaAl[(Al,Si)4O8(OH)2](OH)2 ¡ (H2O,Cl) |
9.DP.30 | Kvanefjeldite | Na4(Ca,Mn)(Si3O7)2(OH)2 |
9.DP.35 | Lemoynite | (Na,K)2CaZr2Si10O26 ¡ 5H2O |
9.DP.35 | Natrolemoynite | Na4Zr2Si10O26 ¡ 9H2O |
9.DP.35 | Hogarthite | (Na,K)2CaTi2Si10O26 ¡ 8H2O |
9.DP.40 | Altisite | Na3K6Ti2Al2Si8O26Cl3 |
9.DP.45 | Chiappinoite-(Y) | Y2Mn(Si3O7)4 |
9.DP.50 | Esquireite | BaSi6O13 ¡ 7H2O |
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 Meliphanite
mindat.org URL:
https://www.mindat.org/min-2636.html
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References for Meliphanite
Reference List:
Dal Negro, A., Rossi, G., Ungaretti, L. (1967) The crystal structure of meliphanite. Acta Crystallographica, 23 (2) 260-264 doi:10.1107/s0365110x67002579
Grice, J. D., Hawthorne, F. C. (2002) New data on meliphanite, Ca4(Na,Ca)4Be4AlSi7O24(F,O)4. The Canadian Mineralogist, 40 (3) 971-980 doi:10.2113/gscanmin.40.3.971
Localities for Meliphanite
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
â - 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.
All localities listed without proper references should be considered as questionable.
Quick NavTopAbout MeliphaniteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Langesundsfjorden, Norway