Ekaterinite
This page is currently not sponsored. Click here to sponsor this page.
About Ekaterinite
Formula:
Ca2(B4O7)(Cl,OH)2 · 2H2O
Hardness:
1
Crystal System:
Hexagonal
This page provides mineralogical data about Ekaterinite.
Classification of Ekaterinite
Approved
5/H.12-40
6.H0.40
6 : BORATES
H : Unclassified borates
0 :
6 : BORATES
H : Unclassified borates
0 :
26.7.3.1
26 : HYDRATED BORATES CONTAINING HYDROXYL OR HALOGEN
7 : Miscellaneous
26 : HYDRATED BORATES CONTAINING HYDROXYL OR HALOGEN
7 : Miscellaneous
10.1.13
10 : Borates with other anions
1 : Borates with halide
10 : Borates with other anions
1 : Borates with halide
Physical Properties of Ekaterinite
Hardness:
1 on Mohs scale
Optical Data of Ekaterinite
Type:
Uniaxial (-)
RI values:
nω = 1.577 nε = 1.574
Max Birefringence:
δ = 0.003
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:
Low
Chemical Properties of Ekaterinite
Formula:
Ca2(B4O7)(Cl,OH)2 · 2H2O
IMA Formula:
Ca2B4O7Cl2 · 2H2O
Crystallography of Ekaterinite
Crystal System:
Hexagonal
Cell Parameters:
a = 11.86 Å, c = 23.88 Å
Ratio:
a:c = 1 : 2.013
Unit Cell V:
2,908.94 ų (Calculated from Unit Cell)
Type Occurrence of Ekaterinite
General Appearance of Type Material:
rose-foliated aggregates
Geological Setting of Type Material:
iron deposit
Associated Minerals at Type Locality:
Synonyms of Ekaterinite
Other Language Names for Ekaterinite
German:Ekaterinit
Spanish:Ekaterinita
Related Minerals - Nickel-Strunz Grouping
| 6.H0.10 | Braitschite-(Ce) | (Ca,Na2)7(Ce,La)2B22O43 · 7H2O | Hex. |
| 6.H0.15 | Satimolite | KNa2(Al5Mg2)[B12O18(OH)12](OH)6Cl4·4H2O | Trig. 3m (3 2/m) : R3m |
| 6.H0.20 | Iquiqueite | K3Na4Mg(CrO4)B24O39(OH) · 12H2O | Hex. |
| 6.H0.25 | Wardsmithite | Ca5Mg[B4O7]6 · 30H2O | Hex. |
| 6.H0.35 | Halurgite | Mg2[B4O7]2 · 5H2O | Mon. |
| 6.H0.45 | Vitimite | Ca6[(OH)14|SO4|B14O19] · 5H2O | Mon. |
| 6.H0.50 | Canavesite | Mg2(HBO3)(CO3) · 5H2O | Mon. |
| 6.H0.55 | Qilianshanite | NaHCO3 · H3BO3 · 2H2O | Mon. |
Related Minerals - Hey's Chemical Index of Minerals Grouping
| 10.1.1 | Teepleite | Na2[B(OH)4]Cl | Tet. 4/mmm (4/m 2/m 2/m) : P4/nmm |
| 10.1.2 | Bandylite | Cu[B(OH)4]Cl | Tet. 4/mmm (4/m 2/m 2/m) : P4/nmm |
| 10.1.3 | Berborite | Be2(BO3)(OH,F) · H2O | Trig. |
| 10.1.4 | Fluoborite | Mg3(BO3)(F,OH)3 | Hex. |
| 10.1.5 | Boracite | Mg3(B7O13)Cl | Orth. mm2 : Pca21 |
| 10.1.6 | Karlite | Mg7(BO3)3(OH,Cl)5 | Orth. |
| 10.1.7 | Shabynite | Mg5(BO3)(OH)5(Cl,OH)2 · 4H2O | Mon. |
| 10.1.8/9/10 | Hilgardite | Ca2B5O9Cl · H2O | Tric. 1 : P1 |
| 10.1.11 | Solongoite | Ca2(H3B3O7)(OH)Cl | Mon. |
| 10.1.12 | Hydrochlorborite | Ca4B8O15Cl2 · 21H2O | Mon. |
| 10.1.14 | Volkovskite | KCa4[B5O8OH]4[B(OH)3]2Cl · 4H2O | Tric. 1 : P1 |
| 10.1.15 | Chelkarite | CaMgB2O4(Cl,OH)2 · 5H2O Or near, with Cl:OH = 3:1 | Orth. |
| 10.1.16 | Johachidolite | CaAlB3O7 | Orth. mmm (2/m 2/m 2/m) : Cmma |
| 10.1.17 | Satimolite | KNa2(Al5Mg2)[B12O18(OH)12](OH)6Cl4·4H2O | Trig. 3m (3 2/m) : R3m |
| 10.1.18 | Chambersite | Mn2+3(B7O13)Cl | Orth. mm2 : Pca21 |
| 10.1.19 | Congolite | (Fe2+,Mg)3(B7O13)Cl | Trig. 3m : R3c |
| 10.1.20 | Ericaite | Fe2+3(B7O13)Cl | Orth. |
Other Information
IR Spectrum:
borehole material [cm-1]: 3570sh, 3550, 3420, 1660w, 1193s, 1123s, 1062s, 1026, 958s, 882, 837w, 784s, 711w, 683w, 620w, 540, 499, 457, 426
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
References for Ekaterinite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
American Mineralogist (1981): 66: 437.
Grew, E.S., and Anovitz, L.M. (1996) BORON: Mineralogy, Petrology and Geochemistry, second edition, as revised (2002).
Chukanov, N.V. (2014): Infrared spectra of mineral species: Extended library. Springer (Springer Geochemistry/Mineralogy), vol. 1, Dordrecht, 1726 pp.
Internet Links for Ekaterinite
mindat.org URL:
https://www.mindat.org/min-1362.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
Localities for Ekaterinite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for 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.
Russia (TL) | |
| [ZVMO 109 (1980), 469; MinRec 32:500] |
Korshunovskoye iron deposit, Zheleznogorsk, Irkutskaya Oblast', Prebaikalia, Eastern-Siberian Region, Russia