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Shlykovite

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Formula:
KCa[Si
 
4
O
 
9
(OH)] · 3H
 
2
O
System:MonoclinicColour:greyish white to ...


Closely related to cryptophyllite and mountainite.

Classification of Shlykovite

IMA status:Approved 2008
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Type Occurrence of Shlykovite

Type Locality:Tsentral'nyi mine (Centralnyi Mine; Central Mine), Rasvumchorr Mt, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
Geological Setting of type material:alkaline igneous rock
Associated Minerals at type locality:
K FeldsparIlmeniteEudialyteEudialyteCryptophyllite

Physical Properties of Shlykovite

Lustre:Pearly
Colour:greyish white to slightly beige

Crystallography of Shlykovite

Crystal System:Monoclinic
Cell Parameters:a = 6.4897(4) Å, b = 6.9969(5) Å, c = 26.714(2) Å
β = 94.597(8)°
Ratio:a:b:c = 0.928 : 1 : 3.818
Unit Cell Volume:V 1,209.12 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction:
d-spacingIntensity
13.33 (100)
6.67 (76)
6.47 (55)
3.469 (45)
3.068 (57)
3.042 (45)
2.945 (62)
2.912 (90)

Chemical Properties of Shlykovite

Formula:
KCa[Si
 
4
O
 
9
(OH)] · 3H
 
2
O
Essential elements:Ca, H, K, O, Si
All elements listed in formula:Ca, H, K, O, Si

Other Names for Shlykovite

Synonyms:
IMA2008-062
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 Shlykovite

Reference List:

- +
Pekov I.V., Zubkova N.V., Filinchuk Ya.E., Chukanov N.V., Zadov A.E., Pushcharovsky D.Yu., Gobechiya E.R. (2010): Shlykovite, KCa[Si4O9(OH)]·3H2O, and cryptophyllite, K2Ca[Si4O10]·5H2O, two new mineral species from the Khibiny alkaline complex, Kola Peninsula, Russia. Zapiski RMO, 139(1), 37-50.

Natalia V. Zubkova, Yaroslav E. Filinchuk, Igor V. Pekov, Dmitry Yu. Pushcharovsky, Elena R. Gobechiya (2010): Crystal structures of shlykovite and cryptophyllite. Comparative crystal chemistry of phyllosilicate minerals of the mountainite family. European Journal of Mineralogy 22, 547-555.

Internet Links for Shlykovite

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  • Localities for Shlykovite

    (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.
    Russia
     
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
          • Khibiny Massif
            • Rasvumchorr Mt
    Pekov I.V., Zubkova N.V., Filinchuk Ya.E., Chukanov N.V., Zadov A.E., Pushcharovsky D.Yu., Gobechiya E.R. Shlykovite, KCa[Si4O9(OH)]·3H2O, and cryptophyllite, K2Ca[Si4O10]·5H2O, two new mineral species from the Khibiny alkaline complex, Kola Peninsula, Russia, Zapiski RMO, 139(1),37(2010).
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