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Ewaldite
A valid IMA mineral species
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About Ewaldite
Paul Peter Ewald
Formula:
Ba(Na,Ca,Y,Ce,K)(CO3)2 · 2.6H2O
Colour:
Bluish green, pale greenish gray
Specific Gravity:
3.25 - 5
Crystal System:
Hexagonal
Member of:
Name:
Named in honor of Paul Peter Ewald (23 January 1888, Berlin, Germany â 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.
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 Identifiers
Mindat ID:
1429
Long-form identifier:
mindat:1:1:1429:4
IMA Classification of Ewaldite
Approved
IMA Formula:
BaCa(CO3)2·2.6H2O
Approval year:
1969
First published:
1971
Approval history:
IMA1969-013
Classification of Ewaldite
5.CC.05
5 : CARBONATES (NITRATES)
C : Carbonates without additional anions, with H2O
C : With rare earth elements (REE)
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
14 : ANHYDROUS NORMAL CARBONATES
2 : AB(XO3)2
11.8.19
11 : Carbonates
8 : Carbonates of the rare earths
11 : Carbonates
8 : Carbonates of the rare earths
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 for Standard |
|---|---|---|
| Ew | IMAâCNMNC | Warr, L.N. (2021). IMAâCNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Dolyhir Quarry, Old Radnor, Powys, Wales, UK