Ewaldite (original) (raw)
A valid IMA mineral species
About EwalditeHide
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Formula:
Ba(Na,Ca,Y,Ce,K)(CO3)2 · 2.6H2O
Colour:
Bluish green, pale greenish gray
Specific Gravity:
3.25 - 5
Name:
Named in honor of Paul Peter Ewald (23 January 1888, Berlin, Germany – 22 August 1985, Ithaca, New York, USA), physicist, crystallographer, and Professor at the Polytechnic Institute of New York, Brooklyn, New York,
USA. He was a pioneer in the field of X-ray diffraction and founded the journal Acta Crystallographica.
This page provides mineralogical data about Ewaldite.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:1429:4
73e0993b-0a58-4626-883a-f851c7c12169
IMA Classification of EwalditeHide
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Approval history:
IMA1969-013
Type description reference:
Classification of EwalditeHide
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5.CC.05
5 : CARBONATES (NITRATES)
C : Carbonates without additional anions, with H2O
C : With rare earth elements (REE)
14.2.4.1
14 : ANHYDROUS NORMAL CARBONATES
2 : AB(XO3)2
11.8.19
11 : Carbonates
8 : Carbonates of the rare earths
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 |
---|---|---|
Ew | 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 EwalditeHide
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Colour:
Bluish green, pale greenish gray
Density:
3.25 - 5 g/cm3 (Measured) 3.37 g/cm3 (Calculated)
Comment:
measured on impure material
Optical Data of EwalditeHide
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RI values:
_n_ω = 1.646 _n_ε = 1.572
δ = 0.074
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Comments:
O = dark bluish green; E = pale yellowish green
Chemistry of EwalditeHide
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Mindat Formula:
Ba(Na,Ca,Y,Ce,K)(CO3)2 · 2.6H2O
Common Impurities:
TR,La,Pr,Nd,Gd,Tb,Dy
Crystallography of EwalditeHide
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Class (H-M):
6_m_ m - Dihexagonal Pyramidal
Cell Parameters:
a = 5.31 Å, c = 12.83 Å
Unit Cell V:
313.29 ų (Calculated from Unit Cell)
Crystal StructureHide
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ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0015637 | Ewaldite | Donnay G, Preston H (1971) Ewaldite, a new barium calcium carbonate II. Its crystal structure Tschermaks Mineralogische und Petrographische Mitteilungen 15 201-212 | 1971 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.135 Å | (100) |
2.044 Å | (90) |
2.024 Å | (90) |
2.655 Å | (80) |
2.626 Å | (80) |
4.340 Å | (70) |
1.609 Å | (60) |
Comments:
Vuoriyarvi complex, Kola Peninsula, Russia. Data from Voloshin et al. (1992).
Geological EnvironmentHide
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Type Occurrence of EwalditeHide
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Place of Conservation of Type Material:
The Natural History Museum, London, England, 1971,137.
National Museum of Natural History (Smithsonian), Washington, D.C., USA, 121 683.
Associated Minerals at Type Locality:
Reference:
Donnay, G., Donnay, J.D.H., Hey, M.H. (1971) Ewaldite, a new barium calcium carbonate. Part I. Tschermaks Mineralogische und Petrologische Mitteilungen: 15: 185-200.
Synonyms of EwalditeHide
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Other Language Names for EwalditeHide
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Relationship of Ewaldite to other SpeciesHide
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Other Members of this group:
Common AssociatesHide
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Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
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5.CC. | Alicewilsonite-(YCe) | Na2Sr2YCe(CO3)6 · 3H2O | Tric. 1 : _P_1 |
---|---|---|---|
5.CC. | Yuchuanite-(Y) | Y2(CO3)3 · H2O | Tric. 1 : _P_1 |
5.CC. | Bainbridgeite-(NdCe) | Na2Ba2NdCe(CO3)6 · 3H2O | Tric. 1 : _P_1 |
5.CC.05 | Donnayite-(Y) | NaCaSr3Y(CO3)6 · 3H2O | Tric. 1 : _P_1 |
5.CC.05 | Mckelveyite-(Nd) | NaCaBa3Nd(CO3)6 · 3H2O | Mon. m : B b |
5.CC.05 | Mckelveyite-(Y) | NaCaBa3Y(CO3)6 · 3H2O | Tric. 1 : _P_1 |
5.CC.05 | Weloganite | Na2Sr3Zr(CO3)6 · 3H2O | Tric. 1 : _P_1 |
5.CC.05 | Unnamed (MSH UK-37A) | Sr3NaCaY(CO3)6 · 3H2O | Hex. 6_m_ m : P_63_m c |
5.CC.05 | UM1992-05-CO:CaCeLaNaSr | (Sr,Na,Y,REE,Ca,Ba)2(CO3)2 · H2O | Trig. 3_m_ : R_3_m |
5.CC.05 | Mckelveyite Group | A3B3(CO3)6 · 3H2O | |
5.CC.05 | Bainbridgeite-(YCe) | Na2Ba2YCe(CO3)6 · 3H2O | Tric. 1 : _P_1 |
5.CC.05 | Alicewilsonite-(YLa) | Na2Sr2YLa(CO3)6 · 3H2O | Tric. 1 : _P_1 |
5.CC.10 | Tengerite-(Y) | Y2(CO3)3 · 2-3H2O | Orth. m m m _(_2/_m_2/_m_2/m ) : P n n m |
5.CC.15 | Kimuraite-(Y) | Ca(Y,Nd)2(CO3)4 · 6H2O | Orth. |
5.CC.15 | Lokkaite-(Y) | Ca(Y,Gd,Nd,Dy)4(CO3)7 · 9H2O | Orth. |
5.CC.15 | Hizenite-(Y) | Ca2Y6(CO3)11 · 14H2O | Orth. |
5.CC.20 | Shomiokite-(Y) | Na3Y[CO3]3 · 3H2O | Orth. m _m_2 |
5.CC.25 | Calkinsite-(Ce) | (Ce,La)2(CO3)3 · 4H2O | Orth. |
5.CC.25 | Lanthanite-(Ce) | (Ce,La,Nd)2(CO3)3 · 8H2O | Orth. m m m _(_2/_m_2/_m_2/m ) |
5.CC.25 | Lanthanite-(La) | (La,Ce)2(CO3)3 · 8H2O | Orth. m m m _(_2/_m_2/_m_2/m ) |
5.CC.25 | Lanthanite-(Nd) | (Nd,La)2(CO3)3 · 8H2O | Orth. m m m _(_2/_m_2/_m_2/m ) |
5.CC.30 | Adamsite-(Y) | NaY[CO3]2 · 6H2O | Tric. 1 : _P_1 |
5.CC.35 | Decrespignyite-(Y) | Cu(Y,REE)4(CO3)4(OH)5Cl · 2H2O | Mon. |
5.CC.40 | Galgenbergite-(Ce) | Ca(Ce,La,Nd)2(CO3)4 · H2O | Tric. 1 : _P_1 |
5.CC.45 | Lecoqite-(Y) | Na3Y(CO3)3 · 6H2O | Hex. 6 : _P_63 |
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 EwalditeHide
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References for EwalditeHide
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Reference List:
Localities for EwalditeHide
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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.
Canada | |
---|---|
Québec Montérégie La Vallée-du-Richelieu RCM Mont Saint-Hilaire ⓘ Poudrette quarry (De-Mix quarry; Demix quarry; Uni-Mix quarry; Carrière Mont Saint-Hilaire; MSH) | MCDONALD (1989) +2 other references |
Nord-du-Québec Jamésie ⓘ Montviel carbonatite complex | Nadeau et al. (2014) |
Greenland | |
Kujalleq Igaliku Narsaarsuk Plateau ⓘ Narssârssuk pegmatite | Petersen et al. (2003) |
Russia | |
Murmansk Oblast Khibiny Massif Kukisvumchorr Mt ⓘ Kirovskii apatite mine | [World of Stones 95:5-6 +1 other reference |
ⓘ The Carbonatite Stock in the vicinity of Tul'ilukht Bay | Zaitsev et al. (1996) +3 other references |
Northern Karelia ⓘ Vuoriyarvi alkaline-ultrabasic massif | Belovitskaya et al. (2004) |
UK | |
Wales Powys Old Radnor ⓘ Dolyhir Quarry | National Museum of Wales database +3 other references |
USA | |
ⓘ Green River Formation | Wayne C. Shanks et al. (2012) |
Wyoming Sweetwater County ⓘ Diamond Alkali Daco No. 3 (TL) | Donnay et al. (1971) +2 other references |