Zincomenite
A valid IMA mineral species
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About Zincomenite
Formula:
ZnSeO3
Colour:
Colourless, white or pale beige
Lustre:
Adamantine
Specific Gravity:
4.760 (Calculated)
Crystal System:
Orthorhombic
Name:
in allusion to chemistry (Greek world μηναζ means the Moon, which is indicative for selenium)
The second simple zinc selenate (selenite) mineral after sofiite (prewittite is also a selenate mineral containing Zn, among other metals). Closely associated with sofiite, with pseudomorphic relationship.
The natural β phase of ZnSeO3; the structure is of the CuSeO3 type and is based on layers of Zn2O8 dimers, that result from sharing edges of ZnO5 trigonal bipyramids. Each dimer has four common vertices with its neighbour dimer. Selenate groups, in which selenium has trigonal pyramidal coordination, bind the layers to form an open framework.
The natural β phase of ZnSeO3; the structure is of the CuSeO3 type and is based on layers of Zn2O8 dimers, that result from sharing edges of ZnO5 trigonal bipyramids. Each dimer has four common vertices with its neighbour dimer. Selenate groups, in which selenium has trigonal pyramidal coordination, bind the layers to form an open framework.
Unique Identifiers
Mindat ID:
46135
Long-form identifier:
mindat:1:1:46135:9
GUID
(UUID V4):
(UUID V4):
f757b9e7-df5a-48a5-9a22-a28dc08dd956
IMA Classification of Zincomenite
Approved
Approval year:
2014
Classification of Zincomenite
7.A0.
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
A : Sulfates (selenates, etc.) without additional anions, without H2O
0 :
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
A : Sulfates (selenates, etc.) without additional anions, without H2O
0 :
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 |
|---|---|---|
| Znm | 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 Zincomenite
Adamantine
Transparency:
Transparent
Colour:
Colourless, white or pale beige
Cleavage:
None Observed
Parting:
Not observed
Fracture:
Irregular/Uneven
Density:
4.760 g/cm3 (Calculated)
Optical Data of Zincomenite
Type:
Biaxial (-)
RI values:
nα = 1.744(5) nβ = 1.860(5) nγ = 1.875(5)
Max Birefringence:
δ = 0.131
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:
Very High
Chemistry of Zincomenite
Mindat Formula:
ZnSeO3
Elements listed:
Crystallography of Zincomenite
Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pbca
Setting:
Pbca
Cell Parameters:
a = 7.1971(1) Å, b = 6.2320(2) Å, c = 11.9914(3) Å
Ratio:
a:b:c = 1.155 : 1 : 1.924
Unit Cell V:
537.84 ų
Z:
8
Morphology:
Tabular, equant or prismatic crystals up to 0.2 mm. Observed forms: {101}, {1010}, {1100}, {1013}
Twinning:
T-shaped, with (012) twin plane
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) |
|---|---|---|---|---|---|---|---|
| 0020210 | Zincomenite | Bensch W, Gunther J R (1986) The crystal structure of beta-zinc selenite Zeitschrift fur Kristallographie 174 291-295 | 1986 | synthetic | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 4.612 Å | (26) |
| 3.601 Å | (77) |
| 3.119 Å | (48) |
| 3.048 Å | (38) |
| 3.014 Å | (100) |
| 2.996 Å | (56) |
| 2.459 Å | (23) |
| 2.311 Å | (20) |
Comments:
From Type Description.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 45a : [Sulfates, arsenates, selenates, antimonates] |
Type Occurrence of Zincomenite
General Appearance of Type Material:
Crystals - tabular, equant or prismatic - up to 0.2 mm; may occur in clusters, up to 0.3 mm, and interrupted incrustations, up to 0.7 × 1 cm, overgrowing basalt scoria; forms partial to complete pseudomorphs after sofiite
Place of Conservation of Type Material:
Type material is deposited in the collections of the Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow, Russia, registration number 4538/1
Geological Setting of Type Material:
In active fumaroles
Associated Minerals at Type Locality:
Synonyms of Zincomenite
Related Minerals - Strunz-mindat Grouping
| 7.A0. | Balićžunićite | Bi2O(SO4)2 |
| 7.A0. | Leguernite | Bi38O42(SO4)15 |
Other Information
IR Spectrum:
spectrum is given
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 Zincomenite
mindat.org URL:
https://www.mindat.org/min-46135.html
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Please feel free to link to this page.
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References for Zincomenite
Reference List:
Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2014) New minerals and nomenclature modifications approved in 2014, CNMNC Newsletter No 21. Mineralogical Magazine, 78 (4) 797-804 doi:10.1180/minmag.2014.078.4.03
Pekov, Igor V., Zubkova, Natalia V., Yapaskurt, Vasiliy O., Britvin, Sergey N., Chukanov, Nikita V., Lykova, Inna S., Sidorov, Evgeny G., Pushcharovsky, Dmitry Y. (2016) Zincomenite, ZnSeO3, a new mineral from the Tolbachik volcano, Kamchatka, Russia. European Journal of Mineralogy, 28 (5) 997-1004 doi:10.1127/ejm/2016/0028-2564
Localities for Zincomenite
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) | |
| Mineralogical Magazine +2 other references |
Quick NavTopAbout ZincomeniteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsStrunz-MindatOther InformationInternet Links References Localities Locality List
Northern fumarole field, First scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia