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Kumdykolite

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Formula:
NaAlSi
 
3
O
 
8
System:Orthorhombic
Polymorph of:Albite, Lingunite


Feldspar Group.
An orthorhombic high-pressure polymorph of albite.

Classification of Kumdykolite

IMA status:Approved 2007
Nickel-Strunz 10th (pending) edition ID:9.FA.45

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

Type Locality:Lake Kumdikol diamond deposit, Lake Kumdikol (Lake Kumdykol'; Ozero Kumdykol'), Prirechnoye, Akmola Province (Aqmola Oblysy; Akmolinskaya Oblast'), Kazakhstan
General Appearance of Type Material:micromete-size inclusions in omphacite
Associated Minerals at type locality:
TalcQuartzPhlogopiteOmphaciteDolomite
DiopsideCristobaliteCalcite

Crystallography of Kumdykolite

Crystal System:Orthorhombic
Class (H-M):mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:Pnnm {P21/n 21/n 2/m}
Cell Parameters:a = 8.24(1) Å, b = 8.68(1) Å, c = 4.84(1) Å
Ratio:a:b:c = 0.949 : 1 : 0.558
Unit Cell Volume:V 346.17 ų
Z:2
X-Ray Powder Diffraction:
d-spacingIntensity
5.97(
4.33(
4.21(
4.18(
4.12(
3.76(
3.23(
3.02(
2.95(
2.74(
Comments:Intensities not given

Chemical Properties of Kumdykolite

Formula:
NaAlSi
 
3
O
 
8
Essential elements:Al, Na, O, Si
All elements listed in formula:Al, Na, O, Si

Relationship of Kumdykolite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.FA.05Kaliophilite
KAlSiO
 
4
9.FA.05Kalsilite
KAlSiO
 
4
9.FA.05Nepheline
(Na,K)AlSiO
 
4
9.FA.05Panunzite
(K,Na)AlSiO
 
4
9.FA.05Trikalsilite
(K,Na)AlSiO
 
4
9.FA.05Yoshiokaite
(Ca,Na)[Al(Al,Si)O
 
4
]
9.FA.05Megakalsilite
KAlSiO
 
4
9.FA.10Malinkoite
NaBSiO
 
4
9.FA.15Virgilite
LiAlSi
 
2
O
 
6
9.FA.25Lisitsynite
KBSi
 
2
O
 
6
9.FA.30Adularia
KAlSi
 
3
O
 
8
9.FA.30Anorthoclase
(Na,K)AlSi
 
3
O
 
8
9.FA.30Buddingtonite
(NH
 
4
)AlSi
 
3
O
 
8
9.FA.30Celsian
BaAl
 
2
Si
 
2
O
 
8
9.FA.30Hyalophane
(K,Ba)[Al(Si,Al)Si
 
2
O
 
8
]
9.FA.30Microcline
KAlSi
 
3
O
 
8
9.FA.30Orthoclase
KAlSi
 
3
O
 
8
9.FA.30Sanidine
KAlSi
 
3
O
 
8
9.FA.30Rubicline
(Rb,K)AlSi
 
3
O
 
8
9.FA.30Monalbite
NaAlSi
 
3
O
 
8
9.FA.35Albite
NaAlSi
 
3
O
 
8
9.FA.35Andesine
(Na,Ca)[Al(Si,Al)Si
 
2
O
 
8
]
9.FA.35Anorthite
CaAl
 
2
Si
 
2
O
 
8
9.FA.35Bytownite
(Ca,Na)[Al(Al,Si)Si
 
2
O
 
8
]
9.FA.35Labradorite
(Ca,Na)[Al(Al,Si)Si
 
2
O
 
8
]
9.FA.35Oligoclase
(Na,Ca)[Al(Si,Al)Si
 
2
O
 
8
]
9.FA.35Reedmergnerite
Na[BSi
 
3
O
 
8
]
9.FA.40Paracelsian
BaAl
 
2
Si
 
2
O
 
8
9.FA.45Svyatoslavite
CaAl
 
2
Si
 
2
O
 
8
9.FA.50Slawsonite
(Sr,Ca)Al
 
2
Si
 
2
O
 
8
9.FA.55Lisetite
CaNa
 
2
Al
 
4
Si
 
4
O
 
16
9.FA.60Banalsite
BaNa
 
2
[Al
 
2
Si
 
2
O
 
8
]
 
2
9.FA.60Stronalsite
SrNa
 
2
[Al
 
2
Si
 
2
O
 
8
]
 
2
9.FA.65Danburite
CaB
 
2
Si
 
2
O
 
8
9.FA.65Maleevite
BaB
 
2
Si
 
2
O
 
8
9.FA.65Pekovite
SrB
 
2
Si
 
2
O
 
8
9.FA.70Lingunite
(Na,Ca)AlSi
 
3
O
 
8
9.FA.75Kokchetavite
KAlSi
 
3
O
 
8

Other Names for Kumdykolite

Synonyms:
IMA2007-049
Other Languages:

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Kumdykolite

Reference List:

- +
Hwang, S.-L., Shen, P., Chu, H.-T., Yui, T.-F., Liou, J. G. and Sobolev, N. V. Sobolev (2010): Kumdykolite, an orthorhombic polymorph of albite, from the Kokchetav ultrahigh-pressure massif, Kazakhstan. Eur. J. Mineral. (fast-track article).

Internet Links for Kumdykolite

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    • Localities for Kumdykolite

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    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Kazakhstan
     
    • Akmola Province (Aqmola Oblysy; Akmolinskaya Oblast')
      • Prirechnoye
        • Lake Kumdikol (Lake Kumdykol'; Ozero Kumdykol')
    		IMA website - Proposals approved in January 2008
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