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Charoite

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Formula:
(K,Sr)15-16(Ca,Na)32[Si6O11(O,OH)6]2[Si12O18(O,OH)12]2[Si17O25(O,OH)18]2(OH,F)4 · ~3H2O
Colour:
Violet to deep lilac
Lustre:
Vitreous, Silky
Hardness:
5 - 6
Specific Gravity:
2.54
Crystal System:
Monoclinic
Name:
For the type locality, near the Chara River
Hide all sections | Show all sections

Classification of CharoiteHide

Approved
9.DG.92

9 : SILICATES (Germanates)
D : Inosilicates
G : Inosilicates with 3-periodic single and multiple chains
70.1.2.3

70 : INOSILICATES Column or Tube Structures
1 : Column or Tube Structures with columnar silicate units
17.1.14

17 : Silicates Containing other Anions
1 : Silicates with fluoride (not containing Al)

Physical Properties of CharoiteHide

Vitreous, Silky
Transparency:
Translucent
Colour:
Violet to deep lilac
Hardness:
5 - 6 on Mohs scale
Hardness:
VHN50=412 kg/mm2 - Vickers
Cleavage:
Distinct/Good
Good in three directions
Density:
2.54 g/cm3 (Measured)    2.77 g/cm3 (Calculated)

Optical Data of CharoiteHide

Type:
Biaxial (+)
RI values:
nα = 1.550 nβ = 1.553 nγ = 1.559
2V:
Measured: 28° to 30°, Calculated: 72°
Max Birefringence:
δ = 0.009
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
r < v strong
Pleochroism:
Weak
Comments:
X= rose
Z= colorless

Chemical Properties of CharoiteHide

Formula:
(K,Sr)15-16(Ca,Na)32[Si6O11(O,OH)6]2[Si12O18(O,OH)12]2[Si17O25(O,OH)18]2(OH,F)4 · ~3H2O
IMA Formula:
(K,Sr,Ba,Mn)15-16(Ca,Na)32Si70(O,OH)180(OH,F)4 · nH2O
Common Impurities:
Al,Fe,Mn,Sr,Ba

Crystallography of CharoiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/m
Cell Parameters:
a = 32.296 Å, b = 19.651 Å, c = 7.16 Å
β = 96.3°
Ratio:
a:b:c = 1.643 : 1 : 0.364
Unit Cell V:
4517 ų
Z:
2
Morphology:
Fibrous, massive

Type Occurrence of CharoiteHide

Synonyms of CharoiteHide

Other Language Names for CharoiteHide

Dutch:Charoiet
German:Charoit
Italian:Charoite
Lithuanian:Čaroitas
Polish:Czaroit
Russian:Чароит
Spanish:Charoita

Common AssociatesHide

AegirineNaFe3+Si2O6
CanasiteK3Na3Ca5Si12O30(OH)4
SteacyiteK0.3(Na,Ca)2ThSi8O20
TinaksiteK2Na(Ca,Mn2+)2Ti[O|Si7O18(OH)]
Associated Minerals Based on Photo Data:
Aegirine97 photos of Charoite associated with Aegirine on mindat.org.
Tinaksite58 photos of Charoite associated with Tinaksite on mindat.org.
Steacyite28 photos of Charoite associated with Steacyite on mindat.org.
Quartz25 photos of Charoite associated with Quartz on mindat.org.
Frankamenite16 photos of Charoite associated with Frankamenite on mindat.org.
Fedorite14 photos of Charoite associated with Fedorite on mindat.org.
Pectolite12 photos of Charoite associated with Pectolite on mindat.org.
Galena11 photos of Charoite associated with Galena on mindat.org.
Microcline8 photos of Charoite associated with Microcline on mindat.org.
Tokkoite7 photos of Charoite associated with Tokkoite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.DG.05BustamiteCaMn2+(Si2O6)Tric. 1 : P1
9.DG.05FerrobustamiteCaFe2+(Si2O6)Tric.
9.DG.05PectoliteNaCa2Si3O8(OH)Tric. 1 : P1
9.DG.05SeranditeNaMn2+2Si3O8(OH)Tric. 1 : P1
9.DG.05WollastoniteCaSiO3Tric. 1 : P1
9.DG.05Wollastonite-1ACaSiO3Tric.
9.DG.07CascanditeCa(Sc,Fe3+)(HSi3O9)Tric.
9.DG.08Plombièrite[Ca4Si6O16(OH)2 · 2H2O]·(Ca·5H2O)Orth.
9.DG.10Clinotobermorite[Ca4Si6O17 · 2H2O]·(Ca·3H2O)Mon.
9.DG.10RiversideiteCa5(HSi3O9)2 · 2H2OOrth.
9.DG.10Tobermorite[Ca4Si6O17 · 2H2O]·(Ca·3H2O)Orth.
9.DG.15FoshagiteCa4(Si3O9)(OH)2Tric.
9.DG.20JenniteCa9(Si3O9)2(OH)8 · 8H2OTric.
9.DG.25ParaumbiteK3Zr2H(Si3O9)2 · nH2OOrth.
9.DG.25UmbiteK2(Zr,Ti)Si3O9 · H2OOrth.
9.DG.30SørenseniteNa4SnBe2Si6O16(OH)4Mon. 2/m : B2/b
9.DG.35XonotliteCa6(Si6O17)(OH)2Mon. 2/m
9.DG.40HillebranditeCa2(SiO3)(OH)2Orth. mmm (2/m 2/m 2/m) : Cmcm
9.DG.45ZoriteNa8(Ti,Nb)5(Si6O17)2(OH,O)5 · 14H2OOrth.
9.DG.45ChivruaiiteCa4(Ti,Nb)5(Si6O17)2(OH,O)5 · 13-14H2OOrth. mmm (2/m 2/m 2/m) : Cmmm
9.DG.50Haineaultite(Na,Ca)5Ca(Ti,Nb)5(Si6O17)2(OH,F)8 · 5H2OOrth. 2 2 2 : C2 2 2
9.DG.55EpididymiteNa2Be2Si6O15 · H2OOrth. mmm (2/m 2/m 2/m) : Pnma
9.DG.60EudidymiteNa2Be2Si6O15 · H2OMon. 2/m : B2/b
9.DG.65ElpiditeNa2ZrSi6O15 · 3H2OOrth.
9.DG.70Fenaksite(K,Na)4(Fe,Mn)2(Si4O10)2(OH,F)Tric.
9.DG.70LitidioniteCuNaKSi4O10Tric.
9.DG.70ManaksiteKNaMnSi4O10Tric.
9.DG.75TinaksiteK2Na(Ca,Mn2+)2Ti[O|Si7O18(OH)]Tric.
9.DG.75TokkoiteK2Ca4[Si7O18(OH)](OH,F)Tric.
9.DG.75SenkevichiteCsKNaCa2Ti[O|Si7O18(OH)]Tric. 1 : P1
9.DG.80CanasiteK3Na3Ca5Si12O30(OH)4
9.DG.80FluorcanasiteK3Na3Ca5Si12O30F4 · H2OMon. m : Bm
9.DG.85MiseriteK1.5-x(Ca,Y,REE)5(Si6O15)(Si2O7)(OH,F)2 · yH2OTric.
9.DG.90FrankameniteK3Na3Ca5(Si12O30)(F,OH)4 · H2OTric.
9.DG.95YuksporiteK4(Ca,Na)14(Sr,Ba)2(◻,Mn,Fe)(Ti,Nb)4(O,OH)4(Si6O17)2(Si2O7)3(H2O,OH)3Orth.
9.DG.97Eveslogite(Na,K,Ca,Sr,Ba)48 [(Ti,Nb,Mn,Fe2+)12Si48O144(OH)12](F,OH,Cl)14Mon. 2/m : P2/m

Related Minerals - Dana Grouping (8th Ed.)Hide

70.1.2.1NarsarsukiteNa4(Ti,Fe)2[Si8O20](O,OH,F)2Tet.
70.1.2.2Caysichite-(Y)Ca2Y2Si4O10(CO3)3 · 4H2OOrth. mm2

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

17.1.1HectoriteNa0.3(Mg,Li)3(Si4O10)(F,OH)2Mon.
17.1.3AgrelliteNaCa2Si4O10FTric.
17.1.4Fluorapophyllite-(Na)NaCa4(Si8O20)F · 8H2OOrth.
17.1.5Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2OTet. 4/mmm (4/m 2/m 2/m) : P4/mnc
17.1.6Hydroxyapophyllite-(K)KCa4(Si8O20)(OH,F) · 8H2OTet.
17.1.7HsianghualiteCa3Li2(Be3Si3O12)F2
17.1.8LeucophaniteNaCaBeSi2O6FOrth. 2 2 2 : P21 21 21
17.1.9NorbergiteMg3(SiO4)(F,OH)2Orth. mmm (2/m 2/m 2/m)
17.1.10Chondrodite(Mg,Fe2+)5(SiO4)2(F,OH)2Mon. 2/m : P21/b
17.1.11Humite(Mg,Fe2+)7(SiO4)3(F,OH)2Orth. mmm (2/m 2/m 2/m)
17.1.12ClinohumiteMg9(SiO4)4F2Mon. 2/m : P21/b
17.1.13CanasiteK3Na3Ca5Si12O30(OH)4
17.1.15CuspidineCa4(Si2O7)(F,OH)2Mon. 2/m : P21/b
17.1.16BultfonteiniteCa2(HSiO4)F · H2OTric.
17.1.17ZeophylliteCa13Si10O28(OH)2F8 · 6H2OTrig. 3 : R3
17.1.18Rowlandite-(Y)(Y,Ce)4Fe2+(Si2O7)2F2 (?)Tric.
17.1.19YuksporiteK4(Ca,Na)14(Sr,Ba)2(◻,Mn,Fe)(Ti,Nb)4(O,OH)4(Si6O17)2(Si2O7)3(H2O,OH)3Orth.
17.1.20Yftisite-(Y)(Y,Dy,Er)4(Ti,Sn)(SiO4)2O(F,OH)6
17.1.21Mosandrite-(Ce)(Ca3REE)[(H2O)2Ca0.50.5]Ti(Si2O7)2(OH)2(H2O)2Mon. 2/m : P21/b
17.1.22Hiortdahlite(Na,Ca)2Ca4Zr(Mn,Ti,Fe)(Si2O7)2(F,O)4 Tric.
17.1.23BurpaliteNa2CaZr(Si2O7)F2Mon.
17.1.24SeidozeriteNa4MnZr2Ti(Si2O7)2O2F2Mon.
17.1.25Thorosteenstrupine(Ca,Th,Mn)3Si4O11F · 6H2O
17.1.26ZircophylliteK2NaFe2+Zr2(Si4O12)2O2(OH)4FTric.
17.1.27JinshajiangiteBaNaFe2+4Ti2(Si2O7)2O2(OH)2FMon. 2/m
17.1.28RosenbuschiteNa6Ca6Zr3Ti(Si2O7)4O2F6Tric. 1 : P1
17.1.29NarsarsukiteNa4(Ti,Fe)2[Si8O20](O,OH,F)2Tet.
17.1.30SonoliteMn2+9(SiO4)4(OH)2Mon.

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.
Industrial Uses:
Jewelry

Charoite in petrologyHide

An essential component of (items highlighted in red)

References for CharoiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
M. I. Chiragov & A. F. Shirinova (2004), [Crystalline structure of charoite as a derivative of miserite, canasite and okenite.] (Russian with English abstract): Mineralogical Journal (Ukraine), 26(4), pp 5–9.
American Mineralogist: 63: 1282.
American Mineralogist: 73: 198 (1988)
Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 107: 94-100.
Acta Crystallographica: A40, Supplement C, 246.
I.V.Rozhdestvenskaya, T.Kogure, E. Abe, & V.A.Drits (2009), A structural model for charoite. Mineralogical Magazine 73,883-890(2009)
I. Rozhdestvenskaya, E. Mugnaioli, M. Czank, W. Depmeier, U. Kolb, A. Reinholdt & T. Weirich (2010) The structure of charoite, (K,Sr,Ba,Mn)15-16(Ca,Na)32[(Si70(O,OH)180](OH,F)4.0.nH2O, solved by conventional and automated electron diffraction. Mineralogical Magazine, 74, 159-177.
Rozhdestvenskaya I.V. & Drits, V.A. (2013): Peculiarities of the charoite X-ray powder diffraction pattern. Zapiski RMO, 142(4), 101-112.

Internet Links for CharoiteHide

Localities for CharoiteHide

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.
Russia
 
  • Eastern-Siberian Region
    • Prebaikalia (Pribaikal'e)
      • Irkutskaya Oblast'
        • Aldan Shield
          • Chara and Tokko Rivers Confluence
            • Murunskii Massif
Vorob'yev E.I. (2008) Charoite, - Novosibirsk. GEO, p. 142 (in Rus.).
    • Sakha Republic (Saha Republic; Yakutia)
      • Aldan Shield
        • Chara and Tokko Rivers Confluence
[Lapis 1993:4 p.13-20]; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Rozhdestvenskaya, I. V., Kogure, T., Abe, E., & Drits, V. A. (2009). A structural model for charoite. Mineralogical Magazine, 73(5), 883-890.
Pavel M. Kartashov data
Natural History Museum Vienna collection
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Vorob'yov E.I. (2008) Charoite, - Novosibirsk. GEO, p. 142 (in Rus.).
Vorob'yov E.I. (2008) Charoite, - Novosibirsk. GEO, p. 142 (in Rus.).
Pavel M. Kartashov data
Mineral and/or Locality  
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