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Gray with greenish tint
4 - 5
Crystal System:
Named in honor of Alexander Petrovich Denisov (Александра Петровича Денисова) (06 June 1918, Chausy, Tsaritsynsky, Saratov province, Russian SFSR - 31 January 1972, Apatity, USSR), geologist with the Geological Institute, Kola Branch, Acadademy of Science, U.S.S.R. He was an expert in X-ray methods for studying minerals.
The currently accepted formula, K14+x(Ca,Na,Mn,Fe)48[Si60O162]F16(Ox,OH4−x)·2H2O, places the mineral among the most structurally complex ones.

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Classification of DenisoviteHide

Approval Year:
First Published:
Approval History:

9 : SILICATES (Germanates)
H : Unclassified silicates
A : With Alkali and Alkali-earth Elements

65 : INOSILICATES Single-Width,Unbranched Chains,(W=1)
2 : Single-Width Unbranched Chains, W=1 with chains P=3

14 : Silicates not Containing Aluminum
6 : Silicates of Ca with alkali or Mg or both

Physical Properties of DenisoviteHide

Gray with greenish tint
Colorless under microscope
4 - 5 on Mohs scale

Optical Data of DenisoviteHide

Biaxial (+)
RI values:
nα = 1.567 nβ = 1.568 nγ = 1.576
Max Birefringence:
δ = 0.009
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
r > v strong

Chemical Properties of DenisoviteHide

IMA Formula:
Idealised Formula:
Common Impurities:

Crystallography of DenisoviteHide

Crystal System:
Cell Parameters:
a = 30.92 Å, b = 7.2 Å, c = 18.27 Å
β = 95°
a:b:c = 4.294 : 1 : 2.538
Unit Cell V:
4,051.86 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
3.65 (80)
3.32 (100)
3.24 (90)
3.08 (80)
3.03 (90)
2.79 (80)
2.78 (80)
2.75 (100)
2.69 (80)

Type Occurrence of DenisoviteHide

General Appearance of Type Material:
parallel columnar aggregates up to 10-15 cm across, consisting of acicular individuals
Place of Conservation of Type Material:
Fersman Mineralogical Museum, Moscow.
Geological Museum, Apatite.
Men´shikov, Y.P. (1984) Denisovite Ca4(K1.4Na0.6)2 Si6O16(F,OH)2 - a new mineral from the Khibina massif. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva: 113(6): 718-723.

Synonyms of DenisoviteHide

Other Language Names for DenisoviteHide


Common AssociatesHide

Associated Minerals Based on Photo Data:
Aegirine5 photos of Denisovite associated with Aegirine on

Related Minerals - Nickel-Strunz GroupingHide

9.HA.10KenyaiteNa2Si22O41(OH)8 · 6H2OMon.
9.HA.25MagbasiteKBaFe3+Mg7Si8O22(OH)2F6Orth. mmm (2/m 2/m 2/m) : Cmma
9.HA.50RudenkoiteSr3(Al3.5Si3.5)O10(OH,O)8Cl2 · H2OMon.
9.HA.55FoshallasiteCa3[Si2O7] · 3H2O(?)
9.HA.60NagelschmidtiteCa7(SiO4)2(PO4)2Hex. 6 : P61
9.HA.65Caryochroite(Na,Sr)3(Fe3+,Mg)10[(O,OH)9|Ti2Si12O37] · (H2O,O,OH)17Mon.
9.HA.70JuaniteCa10Mg4Al2Si11O39 · 4H2O or near
9.HA.75TacharaniteCa12Al2Si18O33 (OH)36Mon.
9.HA.80OyeliteCa10Si8B2O29 · 12.5H2OOrth.
9.HA.90Tiettaite(Na,K)17FeTiSi16O29(OH)30 · 2H2OOrth. mmm (2/m 2/m 2/m) : Cmcm

Related Minerals - Dana Grouping (8th Ed.)Hide 1 : P1 1 : P1 1 : P1 1 : P1,Fe3+)(HSi3O9)Tric.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

14.6.1CombeiteNa2Ca2(Si6O18)0.5Trig. 3m (3 2/m) : R3m
14.6.2PectoliteNaCa2Si3O8(OH)Tric. 1 : P1
14.6.6MountainiteKNa2Ca2[Si8O19(OH)] · 6H2OMon. 2/m : P2/b
14.6.7RhodesiteKHCa2Si8O19 · 5H2OOrth. mmm (2/m 2/m 2/m)
14.6.8MiseriteK1.5-x(Ca,Y,REE)5(Si6O15)(Si2O7)(OH,F)2 · yH2OTric.
14.6.9ÅkermaniteCa2Mg(Si2O7)Tet. 4 2m : P4 21m
14.6.11MerwiniteCa3Mg(SiO4)2Mon. 2/m : P21/b
14.6.12DiopsideCaMgSi2O6Mon. 2/m : B2/b
14.6.13Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2Mon. 2/m : B2/m

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 DenisoviteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Men´shikov, Y.P. (1984) Denisovite Ca4(K1.4Na0.6)2 Si6O16(F,OH)2 - a new mineral from the Khibina massif. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva: 113(6): 718-723.
Dunn, P.J., Ferraiolo, J.A., Fleischer, M., Gobel, V., Grice, J.D., Langley, R.H., Shigley, J.E., Vanko, D.A., Zilczer, J.A. (1985) New mineral names. American Mineralogist: 70: 1329-1335.
Konev, A.A., Vorobiev, E.I., Paradina, L.F., Sapozhnikov, A.N. (1987) Denisovite from Murunskii Massif – the 2nd find in the world. Doklady Akademii Nauk SSSR: 293: 196-198.
Rozhdestvenskaya, I.V., Mugnaioli, E., Schowalter, M., Schmidt, M.U., Czank, M., Depmeier, W., Rosenauer, A. (2017): The structure of denisovite, a fibrous nanocrystalline polytypic disordered `very complex' silicate, studied by a synergistic multi-disciplinary approach employing methods of electron crystallography and X-ray powder diffraction. IUCrJ, 4, 223-242

Internet Links for DenisoviteHide

Localities for DenisoviteHide

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.
  • Eastern-Siberian Region
    • Sakha Republic (Saha Republic; Yakutia)
      • Aldan Shield
        • Chara and Tokko Rivers Confluence
[Lapis 1993:4 p.13-20]
  • Northern Region
    • Murmanskaya Oblast'
      • Khibiny Massif
ZVMO,(1984) 113, 718-723
ZVMO (1984) 113, 718-723; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
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