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Leybovite-K
A valid IMA mineral species - pending publication
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Michael B. Leybov
Formula:
KCuNa(MgFe3+)(AsO4)3
Crystal System:
Monoclinic
Member of:
Name:
Named in honor of Dr. Michael B. Leybov (Михаил Борисович Лейбов), born 1946, a Russian geologist and geophysicist, one of the founders and the principal photographer of the Russian mineralogical magazines "World of Stones" (1993–1997) and its successor "Mineralogical Almanac".
Unique combination of elements (at the upload time).
Unique Identifiers
Mindat ID:
488770
Long-form identifier:
mindat:1:1:488770:2
IMA Classification of Leybovite-K
Approved, Pending publication
IMA Formula:
KCu2+Na(MgFe3+)(As5+O4)3
Approval year:
2025
Approval history:
IMA2025-007
Classification of Leybovite-K
8.BC.05
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
C : With only medium-sized cations, (OH, etc.):RO4 > 1:1 and < 2:1
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
C : With only medium-sized cations, (OH, etc.):RO4 > 1:1 and < 2:1
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Leb-K | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Chemistry of Leybovite-K
Mindat Formula:
KCuNa(MgFe3+)(AsO4)3
Element Weights:
Crystallography of Leybovite-K
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Setting:
C2/c
Cell Parameters:
a = 12.504(1) Å, b = 12.7823(5) Å, c = 6.7214(6) Å
β = 114.01(1)°
β = 114.01(1)°
Ratio:
a:b:c = 0.978 : 1 : 0.526
Unit Cell V:
981.33 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.59 Å | (25) |
| 3.230 Å | (57) |
| 3.082 Å | (32) |
| 2.857 Å | (24) |
| 2.762 Å | (100) |
| 2.708 Å | (30) |
| 2.622 Å | (19) |
| 2.317 Å | (25) |
Type Occurrence of Leybovite-K
Place of Conservation of Type Material:
cotypes: the collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Leninsky Pr. 18-2, 119071 Moscow, Russia, registration numbers 6055/2 and 6240/1
Synonyms of Leybovite-K
Other Language Names for Leybovite-K
Dutch:Leyboviet-K
Relationship of Leybovite-K to other Species
Member of:
Other Members of Alluaudite Supergroup:
| Alluaudite Group | A group of complex Na-metal-phosphates and -arsenates. | |
| Bobfergusonite Group | ||
| Johanngeorgenstadtite | Ni2+4.5(AsO4)3 | Mon. 2/m : B2/b |
| Manganobadalovite | NaNaMn(MgFe3+)(AsO4)3 | Mon. 2/m : B2/b |
| Manganohatertite | NaNaCa(MnFe3+)(AsO4)3 | Mon. 2/m : B2/b |
| Manitobaite Group | ||
| Wyllieite Group |
Related Minerals - Strunz-mindat Grouping
| 8.BC. | Manganrockbridgeite | Mn2+2Fe3+3(PO4)3(OH)4(H2O) |
| 8.BC. | Elaliite | (Fe2+8Fe3+)(PO4)O8 |
| 8.BC. | Elkinstantonite | Fe4(PO4)2O |
| 8.BC.05 | Angelellite | Fe3+4(AsO4)2O3 |
| 8.BC.10 | Frondelite | (Mn2+0.5Fe3+0.5)2Fe3+3(PO4)3(OH)5 |
| 8.BC.10 | Rockbridgeite | (Fe2+0.5Fe3+0.5)2Fe3+3(PO4)3(OH)5 |
| 8.BC.10 | Ferrirockbridgeite | (Fe3+0.67◻0.33)2(Fe3+)3(PO4)3(OH)4(H2O) |
| 8.BC.10 | Ferrorockbridgeite | (Fe2+,Mn2+)2(Fe3+)3(PO4)3(OH)4(H2O) |
| 8.BC.10 | Plimerite | ZnFe3+4(PO4)3(OH)5 |
| 8.BC.15 | Aerugite | Ni8.5(AsO4)2As5+O8 |
Radioactivity
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 Leybovite-K
mindat.org URL:
https://www.mindat.org/min-488770.html
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References for Leybovite-K
Localities for Leybovite-K
Showing 1 localities.
symbol to view information about a locality.
The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Russia (TL) | |
| Koshlyakova et al. (2025) |
