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Zoltaiite

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Formula:
BaV24+V123+(SiO4)2O19
System:
Trigonal
Colour:
Steel-grey to black
Hardness:
6 - 7
Name:
Named after Tibor Zoltai (1926 - 13 July 2003), Professor of Geology at the University of Minnesota, USA.
This page provides mineralogical data about Zoltaiite.

Classification of Zoltaiite

Approved 2003
9.AG.85

9 : SILICATES (Germanates)
A : Nesosilicates
G : Nesosilicates with additional anions; cations in > [6] +- [6] coordination
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http://www.mindat.org/min-27502.html
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Type Occurrence of Zoltaiite

Geological Setting of Type Material:
Greenschist facies metamorphic rock.
Associated Minerals at Type Locality:

Physical Properties of Zoltaiite

Sub-Metallic, Dull
Diaphaneity (Transparency):
Opaque
Colour:
Steel-grey to black
Hardness (Mohs):
6 - 7
Hardness Data:
Estimated
Fracture:
Irregular/Uneven
Density:
4.83 g/cm3 (Calculated)

Crystallography of Zoltaiite

Crystal System:
Trigonal
Class (H-M):
3 - Rhombohedral
Space Group:
P3
Cell Parameters:
a = 7.6014Å, c = 9.2195Å
Ratio:
a:c = 1 : 1.213
Unit Cell Volume:
V 461.34 ų
X-Ray Powder Diffraction Data:
d-spacingIntensity
9.22(53)
3.100(70)
2.785(100)
2.679(62)
2.402(48)
2.190(97)
1.934(75)
Comments:
From type description.

Optical Data of Zoltaiite

Type:
Anisotropic
Anisotropism:
Weak
Bireflectance:
weak
Reflectivity:
470nmR1=15.9%R2=16.8%
546nmR1=16.0%R2=17.3%
589nmR1=15.9%R2=17.4%
650nmR1=16.1%R2=17.7%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 17.7%.
R1 shown in black, R2 shown in red
Colour in reflected light:
grey with weak brownish tint
Internal Reflections:
none
Pleochroism:
Visible

Chemical Properties of Zoltaiite

Formula:
BaV24+V123+(SiO4)2O19
Essential elements:
All elements listed in formula:

Relationship of Zoltaiite to other Species

9.AG.05AbswurmbachiteCuMn63+(SiO4)O8
9.AG.05BrauniteMn2+Mn63+(SiO4)O8
9.AG.05NeltneriteCaMn63+(SiO4)O8
9.AG.05Braunite-IICaMn143+(SiO4)O20
9.AG.10Långbanite(Mn2+,Ca)4(Mn3+,Fe3+)9Sb5+(SiO4)2O16
9.AG.15MalayaiteCaSn(SiO4)O
9.AG.15TitaniteCaTi(SiO4)O
9.AG.15VanadomalayaiteCaV4+(SiO4)O
9.AG.15Natrotitanite(Na0.5Y0.5)Ti(SiO4)O
9.AG.20Cerite-(Ce)(Ce,Ca)9(Mg,Fe)(SiO4)3(HSiO4)4(OH)3
9.AG.20Cerite-(La)(La,Ce,Ca)9(Fe,Ca,Mg)(SiO4)3(HSiO4)4(OH)3
9.AG.20Aluminocerite-(Ce)(Ce,La,Ca)9(Al,Fe3+)(SiO4)3(HSiO4)4(OH)3
9.AG.25Trimounsite-(Y)Y2Ti2(SiO4)O5
9.AG.25Yftisite-(Y)(Y,Dy,Er)4(Ti,Sn)(SiO4)2O(F,OH)6
9.AG.30SitinakiteKNa2Ti4(SiO4)2O5(OH) · 4H2O
9.AG.35KittatinnyiteCa2Mn2Mn(SiO4)2(OH)4 · 9H2O
9.AG.40aNatisiteNa2Ti(SiO4)O
9.AG.40bParanatisiteNa2Ti(SiO4)O
9.AG.45Törnebohmite-(Ce)(Ce,La)2Al(SiO4)2(OH)
9.AG.45Törnebohmite-(La)(La,Ce)2Al(SiO4)2(OH)
9.AG.50Kuliokite-(Y)Y4Al(SiO4)2(OH)2F5
9.AG.55ChantaliteCaAl2(SiO4)(OH)4
9.AG.60MozartiteCaMn3+(SiO4)(OH)
9.AG.60VuagnatiteCaAl(SiO4)(OH)
9.AG.65HatruriteCa3(SiO4)O
9.AG.70JasmunditeCa11(SiO4)4O2S
9.AG.75AfwilliteCa3(HSiO4)2 · 2H2O
9.AG.80BultfonteiniteCa2(HSiO4)F · H2O
9.AG.90Tranquillityite(Fe2+,Ca)8(Zr,Y)2Ti3(SiO4)3O4

Other Names for Zoltaiite

Name in Other Languages:

Other Information

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 Zoltaiite

Reference List:
BARTHOLOMEW, P.R., MANCINI, F., CAHILL, C., HARLOW, G.E. & BERNHARDT, H.-J. (2005): Zoltaiite, a new barium-vanadium nesosubsilicate mineral from British Columbia: Description and crystal structure. American Mineralogist 90, 1655-1660.

Internet Links for Zoltaiite

Localities for Zoltaiite

(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
Canada (TL)
 
  • British Columbia
    • Revelstoke Mining Division
BARTHOLOMEW, P.R., MANCINI, F., CAHILL, C., HARLOW, G.E. & BERNHARDT, H.-J. (2005): Zoltaiite, a new barium-vanadium nesosubsilicate mineral from British Columbia: Description and crystal structure. American Mineralogist 90, 1655-1660.
Mineral and/or Locality  
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