Kostylevite
A valid IMA mineral species
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About Kostylevite
Ekaterina Evtikhievna Kostyleva-Labuntsova (1894 - 1974), Russian mineralogist.
Formula:
K2Zr(Si3O9) · H2O
Colour:
Colorless
Lustre:
Vitreous
Hardness:
5
Specific Gravity:
2.74
Crystal System:
Monoclinic
Name:
Named by A.P. Khomyakov, A.A. Voronkov, L.I. Polezhaeva, and N.N. Smolyaninova in 1983 in honor of Ekaterina Evtikhievna Kostyleva-Labuntsova (Екатерина Евтихиевна Костылёва-Лабунцова) (10 January 1894 - 6 December 1974, Moscow, USSR), mineralogist, Institute of Geology of Ore deposits, Mineralogy and Geochemistry, Moscow, Russia. The mineral labuntsovite is also named in her honor.
Dimorph of:
This page provides mineralogical data about Kostylevite.
Unique Identifiers
Mindat ID:
2261
Long-form identifier:
mindat:1:1:2261:9
GUID
(UUID V4):
(UUID V4):
3d29dad2-ec67-4e73-b1b5-405fd20bf855
IMA Classification of Kostylevite
Approved
IMA Formula:
K2ZrSi3O9 · H2O
First published:
1983
Classification of Kostylevite
9.CJ.35
9 : SILICATES (Germanates)
C : Cyclosilicates
J : [Si6O18]12- 6-membered single rings (sechser-Einfachringe), without insular complex anions
9 : SILICATES (Germanates)
C : Cyclosilicates
J : [Si6O18]12- 6-membered single rings (sechser-Einfachringe), without insular complex anions
59.2.1.3
59 : CYCLOSILICATES Three-Membered Rings
2 : Three-Membered Rings, hydrated
59 : CYCLOSILICATES Three-Membered Rings
2 : Three-Membered Rings, hydrated
14.10.15
14 : Silicates not Containing Aluminum
10 : Silicates of Zr or Hf
14 : Silicates not Containing Aluminum
10 : Silicates of Zr or Hf
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 |
|---|---|---|
| Ksv | 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 Kostylevite
Vitreous
Transparency:
Transparent
Colour:
Colorless
Streak:
White
Hardness:
5 on Mohs scale
Hardness:
VHN100=428 - 535 - Vickers
Cleavage:
Perfect
(110)
(110)
Density:
2.74 g/cm3 (Measured) 2.79 g/cm3 (Calculated)
Optical Data of Kostylevite
Type:
Biaxial (+)
RI values:
nα = 1.595(2) nβ = 1.598(2) nγ = 1.610(2)
2V:
Measured: 48° , Calculated: 54°
Max Birefringence:
δ = 0.015
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:
Moderate
Dispersion:
r > v or r < v
Optical Extinction:
X = b; Y ∧ c = 45°.
Chemistry of Kostylevite
Mindat Formula:
K2Zr(Si3O9) · H2O
Common Impurities:
Ti,Hf,Fe
Crystallography of Kostylevite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/a
Cell Parameters:
a = 13.171(4) Å, b = 11.717(4) Å, c = 6.565(2) Å
β = 105.26°
β = 105.26°
Ratio:
a:b:c = 1.124 : 1 : 0.56
Unit Cell V:
977.42 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Elongated on c, showing forms {001}, {010}, {100}, and {011}.
Twinning:
Twinned on (100)
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 6.42 Å | (47) |
| 5.60 Å | (60) |
| 3.336 Å | (53) |
| 3.087 Å | (100) |
| 2.802 Å | (53) |
Comments:
Vuonnemiok River Valley, Russia. Data from type description.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 35 : Ultra-alkali and agpaitic igneous rocks |
Type Occurrence of Kostylevite
General Appearance of Type Material:
Elongated colorless crystals.
Place of Conservation of Type Material:
Geology Museum, Kola Branch, Academy of Sciences, Apatity, Russia.
Mining Institute, St. Petersburg, Russia, number 1634/1.
A. E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, number 82757.
Mining Institute, St. Petersburg, Russia, number 1634/1.
A. E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, number 82757.
Geological Setting of Type Material:
Alkalic pegmatite.
Associated Minerals at Type Locality:
Reference:
Khomyakov, A.P., Voronkov, A.A., Polezhaeva, L.I., Smolyaninova, N.N. (1983) Kostylevite, K4Zr2Si6O18·2H2O, a new mineral. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva: 112: 469-474.
Synonyms of Kostylevite
Other Language Names for Kostylevite
Common Associates
Associated Minerals Based on Photo Data:
| 9 photos of Kostylevite associated with Aegirine | NaFe3+Si2O6 |
| 6 photos of Kostylevite associated with Sazykinaite-(Y) | Na5YZr[SiO3]6 · 6H2O |
| 4 photos of Kostylevite associated with Albite | Na(AlSi3O8) |
| 1 photo of Kostylevite associated with Feldspar Group | |
| 1 photo of Kostylevite associated with Lamprophyllite | (Na,Mn2+)3(Sr,Na)2(Ti,Fe3+)3(Si2O7)2O2(OH,O,F)2 |
| 1 photo of Kostylevite associated with Natrolite | Na2Al2Si3O10 · 2H2O |
Related Minerals - Strunz-mindat Grouping
| 9.CJ. | Avdeevite | NaAl4(Be5Li)(Si6O18)2(H2O)1-2 |
| 9.CJ. | Nakkaalaaqite | K2[Na3Ca]LiCa2Ti2Be4Si12O38 |
| 9.CJ. | Zolotarevite | Na5Zr[Si6O15(OH)3] · 3H2O |
| 9.CJ. | Beryllocordierite-Na | NaMg4(Al5Be)(AlSi5O18)2 · 2H2O |
| 9.CJ. | Beryllosachanbińskiite-Na | NaMn4(Al5Be)(AlSi5O18)2 · 2H2O |
| 9.CJ.05 | Bazzite | Be3Sc2(Si6O18) |
| 9.CJ.05 | Beryl | Be3Al2(Si6O18) |
| 9.CJ.05 | Indialite | Mg2Al3(AlSi5O18) |
| 9.CJ.05 va | Vorobyevite | Be3Al2(Si6O18) |
| 9.CJ.05 | Stoppaniite | Be3Fe3+2(Si6O18) · H2O |
| 9.CJ.05 | Ferroindialite | (Fe2+,Mg)2Al4Si5O18 |
| 9.CJ.05 | Johnkoivulaite | Cs[Be2B]Mg2Si6O18 |
| 9.CJ.10 | Cordierite | (Mg,Fe)2Al3(AlSi5O18) |
| 9.CJ.10 | Sekaninaite | (Fe,Mg)2Al3(AlSi5O18) |
| 9.CJ.15a | Combeite | Na4.5Ca3.5Si6O17.5(OH)0.5 |
| 9.CJ.15b | Imandrite | Na12Ca3Fe3+2(Si6O18)2 |
| 9.CJ.15a | Kazakovite | Na6Mn2+Ti(Si6O18) |
| 9.CJ.15c | Koashvite | Na6(Ca,Mn)(Ti,Fe)Si6O18 · H2O |
| 9.CJ.15a | Lovozerite | Na2Ca(Zr,Ti)(Si6O12)[(OH)4O2] · H2O |
| 9.CJ.15a | Tisinalite | Na3H3(Mn,Ca,Fe)TiSi6(O,OH)18 · 2H2O |
| 9.CJ.15a | Zirsinalite | Na6(Ca,Mn2+,Fe2+)Zr(Si6O18) |
| 9.CJ.15a | Litvinskite | Na2(◻,Na,Mn)ZrSi6O12(OH,O)6 |
| 9.CJ.15a | Kapustinite | Na6ZrSi6O16(OH)2 |
| 9.CJ.15a | Townendite | Na8ZrSi6O18 |
| 9.CJ.25 | Baratovite | KCa7(Ti,Zr)2Li3Si12O36F2 |
| 9.CJ.25 | Katayamalite | KLi3Ca7Ti2(SiO3)12(OH)2 |
| 9.CJ.25 | Aleksandrovite | KCa7Sn2Li3Si12O36F2 |
| 9.CJ.30 | Dioptase | CuSiO3 · H2O |
| 9.CJ.40 | Petarasite | Na5Zr2(Si6O18)(Cl,OH) · 2H2O |
| 9.CJ.45 | Gerenite-(Y) | (Ca,Na)2(Y,REE)3Si6O18 · 2H2O |
| 9.CJ.50 | Odintsovite | K2Na4Ca3Ti2Be4Si12O38 |
| 9.CJ.55 | Mathewrogersite | Pb7FeAl3GeSi12O36(OH,H2O)6 |
| 9.CJ.60 | Pezzottaite | Cs(Be2Li)Al2(Si6O18) |
Other Information
Thermal Behaviour:
Material heated to 600°C gives an X-ray pattern similar to wadeite.
Notes:
Decomposed by cold 10% HCl.
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 Kostylevite
mindat.org URL:
https://www.mindat.org/min-2261.html
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External Links:
References for Kostylevite
Localities for Kostylevite
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 | |
| Arzamastsev et al. (2008) |
| 33 IGC excursion No 47 | |
| ZVMO (1983) +2 other references |
| Ferraris et al. (2001) |
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Koashva Open Pit, Koashva Mt, Khibiny Massif, Murmansk Oblast, Russia