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About KumdykoliteHide

Crystal System:
Member of:
For the type locality.
Polymorph of:
Feldspar Group.
An orthorhombic high-pressure polymorph of albite.
May be a metastable phase formed at high temperatures followed by rapid cooling in the absence of water.

Classification of KumdykoliteHide

Approval year:

9 : SILICATES (Germanates)
F : Tektosilicates without zeolitic H2O
A : Tektosilicates without additional non-tetrahedral anions

Chemical Properties of KumdykoliteHide


Crystallography of KumdykoliteHide

Crystal System:
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Cell Parameters:
a = 8.24(1) Å, b = 8.68(1) Å, c = 4.84(1) Å
a:b:c = 0.949 : 1 : 0.558
Unit Cell V:
346.17 ų

X-Ray Powder DiffractionHide

Powder Diffraction Data:
5.97 Å(
4.33 Å(
4.21 Å(
4.18 Å(
4.12 Å(
3.76 Å(
3.23 Å(
3.02 Å(
2.95 Å(
2.74 Å(
Intensities not given

Type Occurrence of KumdykoliteHide

General Appearance of Type Material:
micrometer-size inclusions in omphacite
Place of Conservation of Type Material:
National Museum of Natural Science, Taichung, Taiwan.
Geological Setting of Type Material:
eclogite from ultrahigh-pressure massif
Associated Minerals at Type Locality:

Synonyms of KumdykoliteHide

Relationship of Kumdykolite to other SpeciesHide

Member of:
Other Members of this group:
Alkali FeldsparA subgroup of the Feldspar Group, poor in calcium, and mostly rich in potassium.
AnorthiteCa(Al2Si2O8)Tric. 1 : P1
BanalsiteNa2BaAl4Si4O16Orth. mm2 : Iba2
Buddingtonite(NH4)(AlSi3O8)Mon. 2 : P21
DmisteinbergiteCa(Al2Si2O8)Trig. 3 2 : P3 1 2
FerrisanidineK[Fe3+Si3O8]Mon. 2/m : B2/m
FilatoviteK(Al,Zn)2(As,Si)2O8Mon. 2/m
HexacelsianBaAl2Si2O8Hex. 6/mmm (6/m 2/m 2/m) : P63/mcm
KokchetaviteK(AlSi3O8)Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc
SlawsoniteSr(Al2Si2O8)Mon. 2/m : P21/b
SunstoneA variety of feldspar (microcline or oligoclase, more rarely labradorite) that has schiller, ...
Unnamed (New Ordered Member of the Alkali Feldspar Series)KNa(Si6Al2)O16Mon. m

Related Minerals - Nickel-Strunz GroupingHide

9.FA.05KaliophiliteKAlSiO4Trig. 3 : P3
9.FA.05KalsiliteKAlSiO4Hex. 6 2 2 : P63 2 2
9.FA.05NephelineNa3K(Al4Si4O16)Hex. 6 : P63
9.FA.05Panunzite(K,Na)AlSiO4Hex. 6 : P63
9.FA.05Yoshiokaite(Ca,Na)[Al(Al,Si)O4]Trig. 3 : P3
9.FA.05MegakalsiliteKAlSiO4Hex. 6 : P63
9.FA.10MalinkoiteNaBSiO4Hex. 6 : P63
9.FA.15VirgiliteLiAlSi2O6Hex. 6 2 2 : P62 2 2
9.FA.25LisitsyniteKBSi2O6Orth. 2 2 2 : P2 2 2
9.FA.30Buddingtonite(NH4)(AlSi3O8)Mon. 2 : P21
9.FA.30CelsianBa(Al2Si2O8)Mon. 2/m
9.FA.30MicroclineK(AlSi3O8)Tric. 1
9.FA.30OrthoclaseK(AlSi3O8)Mon. 2/m : B2/m
9.FA.30SanidineK(AlSi3O8)Mon. 2/m : B2/m
9.FA.30MonalbiteNaAlSi3O8Mon. 2/m : B2/m
9.FA.35AlbiteNa(AlSi3O8)Tric. 1
9.FA.35AnorthiteCa(Al2Si2O8)Tric. 1 : P1
9.FA.50SlawsoniteSr(Al2Si2O8)Mon. 2/m : P21/b
9.FA.55LisetiteCaNa2Al4Si4O16Orth. mm2
9.FA.60BanalsiteNa2BaAl4Si4O16Orth. mm2 : Iba2
9.FA.65DanburiteCaB2Si2O8Orth. mmm (2/m 2/m 2/m)
9.FA.65MaleeviteBaB2Si2O8Orth. mmm (2/m 2/m 2/m) : Pnma
9.FA.65PekoviteSrB2Si2O8Orth. mmm (2/m 2/m 2/m) : Pnma
9.FA.70Lingunite(Na,Ca)AlSi3O8Tet. 4/m : I4/m
9.FA.75KokchetaviteK(AlSi3O8)Hex. 6/mmm (6/m 2/m 2/m) : P6/mcc

Other InformationHide

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 KumdykoliteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Hwang S L, Shen P, Chu H T, Yui T F, Liou J G, Sobolev N V (2009) Kumdykolite, an orthorhombic polymorph of albite, from the Kokchetav ultrahigh-pressure massif, Kazakhstan. European Journal of Mineralogy 21, 1325-1334
Péter Németh, Stephen W. Lehner, Michail I. Petaev, Peter R. Buseck (2013): Kumdykolite, a high-temperature feldspar from an enstatite chondrite. American Mineralogist, 98, 1070-1073.

Internet Links for KumdykoliteHide

Localities for KumdykoliteHide

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.
Czech Republic
  • Pardubice Region
    • Chrudim District
      • Běstvina
Maria Perraki & Shah Wali Faryad (2014): First finding of microdiamond, coesite and other UHP phases in felsic granulites in the Moldanubian Zone: Implications for deep subduction and a revised geodynamic model for Variscan Orogeny in the Bohemian Massif. Lithos 202-203, 157-166.
  • Ústí nad Labem Region
Kotková J., Škoda R., Machovič V. (2013) Kumdykolite, a high-temperature polymorph of albite, from north Bohemian granulites. in X International Eclogite Conference Abstract Volume p66
Kazakhstan (TL)
  • Akmola Region
    • Zerendy
      • Prirechnoye
        • Lake Kumdikol (Lake Kumdykol'; Ozero Kumdykol')
Hwang S L, Shen P, Chu H T, Yui T F, Liou J G, Sobolev N V (2009) Kumdykolite, an orthorhombic polymorph of albite, from the Kokchetav ultrahigh-pressure massif, Kazakhstan. European Journal of Mineralogy 21, 1325-1334
North Africa
  • Sahara Desert
Péter Németh, Stephen W. Lehner, Michail I. Petaev, Peter R. Buseck (2013): Kumdykolite, a high-temperature feldspar from an enstatite chondrite. American Mineralogist, 98, 1070-1073.
  • Lower Silesian Voivodeship
    • Orlica-Śnieżnik Dome
Ferrero, S., Ziemann, M.A., Angel, R.J., O'Brien, P.J., Wunder, B. (2015): Kumdykolite, kokchetavite, and cristobalite crystallized in nanogranites from felsic granulites, Orlica-Śnieżnik Dome (Bohemian Massif): not evidence for ultrahigh-pressure conditions. Contributions to Mineralogy and Petrology: 171(3): 2-13
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