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Bokite

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About BokiteHide

02728340015709257724184.jpg
Ivan I. Bok
Formula:
(Al,Fe3+)1.3(V5+,V4+,Fe3+)8O20 · 7.4H2O
Colour:
Black
Lustre:
Sub-Metallic, Dull
Hardness:
3
Specific Gravity:
2.97 - 3.1
Crystal System:
Monoclinic
Name:
Named in 1963 by E.A. Ankinovich in honor of Ivan Ivanovich Bok (Иван Иванович Бок) (10 October 1898, Belebey, Bashkortostan, Russian Empire - 30 September 1983, Leningrad, USSR), geologist, Institute of Geosciences, Alma-Ata, Kazakhstan and instructor, Sverdlovsk Mining Institute (then Kazakhstan Mining and Metallurgical Institute).
This page provides mineralogical data about Bokite.


Classification of BokiteHide

Approved
4.HE.20

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
H : V[5,6] Vanadates
E : Phyllovanadates
47.3.2.5

47 : VANADIUM OXYSALTS
3 : Hydrated Normal Vanadium Oxysalts
21.4.25

21 : Vanadates (and vanadates with arsenate or phosphate)
4 : Vanadates of U, Mn, Fe or Ni

Physical Properties of BokiteHide

Sub-Metallic, Dull
Transparency:
Opaque
Colour:
Black
Streak:
Black, may be brownish black
Hardness:
Cleavage:
Perfect
parallel to elongation; fair, perpendicular to first direction
Density:
2.97 - 3.1 g/cm3 (Measured)    3.41 g/cm3 (Calculated)

Optical Data of BokiteHide

Type:
Biaxial
RI values:
nα = 2.010 nγ = 2.060
Max Birefringence:
δ = 0.050
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Type:
Anisotropic
Anisotropism:
Strong, brownish yellow to grey-blue
Dispersion:
Relatively weak
Colour in reflected light:
Light grey
Pleochroism:
Strong
Comments:
Dirty olive-green to deep reddish brown

Chemical Properties of BokiteHide

Formula:
(Al,Fe3+)1.3(V5+,V4+,Fe3+)8O20 · 7.4H2O
IMA Formula:
(Al,Fe)1.3(V5+,V4+,Fe3+)8O20 · 7.5H2O

Crystallography of BokiteHide

Crystal System:
Monoclinic
Cell Parameters:
a = 11.838 Å, b = 3.643 Å, c = 11.142 Å
β = 110.58°
Ratio:
a:b:c = 3.25 : 1 : 3.058
Unit Cell V:
449.84 ų (Calculated from Unit Cell)
Z:
1
Morphology:
Platy to columnar or wedge-shaped grains, to 0.3 mm; reniform crusts with radiating structure; also in veinlets

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
10.47 Å(100)
3.452 Å(30)
2.907 Å(12)
2.592 Å(12)
1.8208 Å(11)
3.177 Å(9)
2.760 Å(9)
Comments:
Recorded on material from the Kurumsak deposit, Kazakhstan

Type Occurrence of BokiteHide

Place of Conservation of Type Material:
National Museum of Natural History, Washington, D.C., USA (No. 139767)
Geological Setting of Type Material:
In carbonaceous vanadiferous shales
Associated Minerals at Type Locality:

Other Language Names for BokiteHide

German:Bokit
Spanish:Bokita

Relationship of Bokite to other SpeciesHide

Other Members of this group:
BarianditeAl0.6(V5+,V4+)8O20 · 9H2OMon.
Corvusite(Na,K,Ca,Mg)2(V5+,V4+,Fe2+)8O20 · 6-10H2OMon.
Fernandinite(Ca,K)(V5+,V4+,Fe2+)8O20 · 10H2OMon. 2/m : B2/m
Straczekite(Ca,K,Ba)(V5+,V4+)8O20 · 3H2OMon.

Common AssociatesHide

Associated Minerals Based on Photo Data:
2 photos of Bokite associated with Corvusite(Na,K,Ca,Mg)2(V5+,V4+,Fe2+)8O20 · 6-10H2O
2 photos of Bokite associated with BaryteBaSO4
2 photos of Bokite associated with RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2
1 photo of Bokite associated with FervaniteFe3+4V5+4O16 · 5H2O
1 photo of Bokite associated with VashegyiteAl11(PO4)9(OH)6 · 38H2O
1 photo of Bokite associated with SteigeriteAl(VO4) · 3H2O

Related Minerals - Nickel-Strunz GroupingHide

4.HE.05MelanovanaditeCa(V5+,V4+)4O10 · 5H2OTric. 1 : P1
4.HE.10ShcherbinaiteV5+2O5Orth. mmm (2/m 2/m 2/m) : Pmmn
4.HE.15HewettiteCaV6O16 · 9H2OMon. 2/m : P21/m
4.HE.15MetahewettiteCaV6O16 · 3H2OMon. 2/m
4.HE.20BarianditeAl0.6(V5+,V4+)8O20 · 9H2OMon.
4.HE.20Corvusite(Na,K,Ca,Mg)2(V5+,V4+,Fe2+)8O20 · 6-10H2OMon.
4.HE.20Fernandinite(Ca,K)(V5+,V4+,Fe2+)8O20 · 10H2OMon. 2/m : B2/m
4.HE.20Straczekite(Ca,K,Ba)(V5+,V4+)8O20 · 3H2OMon.
4.HE.25HäggiteV3+V4+O2(OH)3Mon.
4.HE.30DoloresiteV4+3O4(OH)4Mon. 2/m
4.HE.35DuttoniteV4+O(OH)2Mon. 2/m
4.HE.40CavoiteCaV4+3O7Orth. mmm (2/m 2/m 2/m) : Pnma

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

47.3.2.1Straczekite(Ca,K,Ba)(V5+,V4+)8O20 · 3H2OMon.
47.3.2.2Corvusite(Na,K,Ca,Mg)2(V5+,V4+,Fe2+)8O20 · 6-10H2OMon.
47.3.2.3Fernandinite(Ca,K)(V5+,V4+,Fe2+)8O20 · 10H2OMon. 2/m : B2/m
47.3.2.4BarianditeAl0.6(V5+,V4+)8O20 · 9H2OMon.
47.3.2.6KazakhstaniteFe3+5V4+3V5+12O39(OH)9 · 9H2OMon.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

21.4.1UvaniteU6+2V5+6O21 · 15H2O (?)Orth.
21.4.2Vanuranylite(H3O)2(UO2)2(VO4)2 · 4H2O
21.4.3StrelkiniteNa2(UO2)2(VO4)2 · 6H2OOrth.
21.4.4CarnotiteK2(UO2)2(VO4)2 · 3H2OMon. 2/m : P21/b
21.4.5Margaritasite(Cs,K,H3O)2(UO2)2(VO4)2 · H2OMon. 2/m : P21/b
21.4.6SengieriteCu2(UO2)2(VO4)2 · 6H2OMon. 2/m : P21/b
21.4.7MetatyuyamuniteCa(UO2)2(VO4)2 · 3-5H2OOrth. mmm (2/m 2/m 2/m)
21.4.8TyuyamuniteCa(UO2)2(VO4)2 · 5-8H2OOrth. mmm (2/m 2/m 2/m) : Pnna
21.4.9RauviteCa(UO2)2(V10O28) · 16H2O
21.4.10FrancevilliteBa(UO2)2(VO4)2 · 5H2OOrth.
21.4.11MetavanuraliteAl(UO2)2(VO4)2(OH) · 8H2OTric.
21.4.12VanuraliteAl(UO2)2(V2O8)(OH) · 11H2OMon.
21.4.13CurienitePb(UO2)2(VO4)2 · 5H2OOrth.
21.4.14FritzscheiteMn(UO2)2(PO4,VO4)2 · 10H2O (?)Tet.
21.4.15Palenzonaite(NaCa2)Mn2+2(VO4)3Iso. m3m (4/m 3 2/m) : Ia3d
21.4.16Santafeite(Na,Ca,Sr)12(Mn2+,Fe3+,Al,Mg)8Mn4+8(VO4)16(OH,O)20 · 8H2OOrth. mmm (2/m 2/m 2/m)
21.4.17PyrobelonitePbMn2+(VO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnma
21.4.18BrackebuschitePb2Mn3+(VO4)2(OH)Mon. 2/m : P21/m
21.4.19ČechitePbFe2+(VO4)(OH)Orth. mmm (2/m 2/m 2/m)
21.4.20HeyitePb5Fe2+2(VO4)2O4Mon.
21.4.21MounanaitePbFe3+2(VO4)2(OH,F)2Mon. 2/m : B2/m
21.4.22SchubneliteFe3+VO4 · H2OTric.
21.4.23FervaniteFe3+4V5+4O16 · 5H2OMon.
21.4.24KazakhstaniteFe3+5V4+3V5+12O39(OH)9 · 9H2OMon.
21.4.26Rusakovite(Fe3+,Al)5(VO4,PO4)2(OH)9 · 3H2O
21.4.27KolovratiteNixZny(VO4)0.67(x+y) · nH2O

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 BokiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Ankinovich, E.A. (1963) A new vanadium mineral - bokite. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 92: 51-59. (in Russian)
Fleischer, M. (1963) New mineral names. American Mineralogist: 48: 1178-1184.
Evans, Jr., H.T., Hughes, J.M. (1990) Crystal chemistry of the natural vanadium bronzes. American Mineralogist: 75: 508-521.
Anthony, J.W., Bideaux, R.A., Bladh, K.W., Nichols, M.C. (1997) Handbook of Mineralogy, Vol. 3. Mineral Data Publishing: 71.

Internet Links for BokiteHide

Localities for BokiteHide

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.
Kazakhstan
 
  • Jambyl Region
    • Talas Alatau Range (Talas Ala-Too Range)
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
  • Kyzylorda Region
    • Shieli
ZVMO,(1963) 92, 51-59; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
  • Turkistan Region
    • Aksumbe
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    • Ran River valley
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
USA
 
  • Arizona
    • Apache County
      • Cane Valley Mining District
        • Yazzie Mesa
          • Monument No. 2 channel
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 140; Haynes, P. (1991), Arizona news, Min.News: Jan: 9.
  • Arkansas
    • Garland Co.
      • Wilson Springs (Potash Sulfur Springs)
        • Union Carbide Mine
R&M 70:3 pp 154-170
  • Nevada
    • Eureka Co.
      • Gibellini Mining District
Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 71
        • Fish Creek Range
American Mineralogist (1979), 64:713-720; https://www.prophecydev.com/files/Gibellini_10Nov2017_final.pdf
NBMG Spec. Pub. 31 Minerals of Nevada
Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 43
 
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