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Zincomenite

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About ZincomeniteHide

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.


Classification of ZincomeniteHide

Approved, Pending publication
Approval Year:
2014
7.A0.

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
A : Sulfates (selenates, etc.) without additional anions, without H2O
0 :

Physical Properties of ZincomeniteHide

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 ZincomeniteHide

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.
Surface Relief:
Very High

Chemical Properties of ZincomeniteHide

Formula:
ZnSeO3

Crystallography of ZincomeniteHide

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

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.612(26)
3.601(77)
3.119(48)
3.048(38)
3.014(100)
2.996(56)
2.459(23)
2.311(20)
Comments:
From Type Description.

Occurrences of ZincomeniteHide

Paragenetic Mode(s):
•  Fumarolic

Type Occurrence of ZincomeniteHide

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 ZincomeniteHide

Other InformationHide

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.

References for ZincomeniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Pekov, I.V., Yapaskurt, V.O., Britvin, S.N., Chukanov, N.V. and Sidorov, E.G. (2014) Zincomenite, IMA 2014-014. CNMNC Newsletter No. 21, August 2014, page 798; Mineralogical Magazine: 78: 797-804.
Pekov, I.V., Zubkova, N.V., Yapaskurt, V.O., Britvin, S.N., Chukanov, N.V., Lykova, I.S., Sidorov, E.G., Pushcharovsky, D.Y. (2016): Zincomenite, ZnSeO3, a new mineral from the Tolbachik volcano, Kamchatka, Russia. European Journal of Mineralogy: 28: 997-1004.

Internet Links for ZincomeniteHide

Localities for ZincomeniteHide

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

- 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). 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Russia (TL)
 
  • Far-Eastern Region
    • Kamchatka Oblast'
      • Tolbachik volcano
        • Great Fissure eruption (Main Fracture)
          • Northern Breakthrough (North Breach)
            • First scoria cone (First cinder cone)
Pekov, I.V., Yapaskurt, V.O., Britvin, S.N., Chukanov, N.V. and Sidorov, E.G. (2014) Zincomenite, IMA 2014-014. CNMNC Newsletter No. 21, August 2014, page 798; Mineralogical Magazine, 78, 797-804. ; Pekov, I.V., Zubkova, N.V., Yapaskurt, V.O., Britvin, S.N., Chukanov, N.V., Lykova, I.S., Sidorov, E.G., Pushcharovsky, D.Y. (2016): Zincomenite, ZnSeO3, a new mineral from the Tolbachik volcano, Kamchatka, Russia. European Journal of Mineralogy: 28: 997-1004.
Mineral and/or Locality  
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