Bazirite
A valid IMA mineral species
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About Bazirite
Formula:
BaZr(Si3O9)
Colour:
Colourless
Hardness:
6 - 6½
Specific Gravity:
3.82 (Calculated)
Crystal System:
Hexagonal
Member of:
Name:
For its chemical composition of BArium and ZIRconium
Type Locality:
Unique Identifiers
Mindat ID:
585
Long-form identifier:
mindat:1:1:585:2
Similar Names
IMA Classification of Bazirite
Approved
IMA Formula:
BaZr4+Si3O9
Approval year:
1976
First published:
1978
Classification of Bazirite
9.CA.05
9 : SILICATES (Germanates)
C : Cyclosilicates
A : [Si3O9]6- 3-membered single rings (dreier-Einfachringe), without insular complex anions
9 : SILICATES (Germanates)
C : Cyclosilicates
A : [Si3O9]6- 3-membered single rings (dreier-Einfachringe), without insular complex anions
59.1.1.1
59 : CYCLOSILICATES Three-Membered Rings
1 : Three-Membered Rings, anhydrous, no other anions
59 : CYCLOSILICATES Three-Membered Rings
1 : Three-Membered Rings, anhydrous, no other anions
14.10.30
14 : Silicates not Containing Aluminum
10 : Silicates of Zr or Hf
14 : Silicates not Containing Aluminum
10 : Silicates of Zr or Hf
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Bzr | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Pronunciation of Bazirite
Pronunciation:
| Play | Recorded by | Country |
|---|---|---|
| Jolyon Ralph | United Kingdom |
Physical Properties of Bazirite
Transparency:
Transparent, Translucent
Colour:
Colourless
Streak:
White
Hardness:
6 - 6½ on Mohs scale
Parting:
Strong parting parallel to {0001}.
Density:
3.82 g/cm3 (Calculated)
Optical Data of Bazirite
Type:
Uniaxial (+)
RI values:
nω = 1.6751 - 1.6813 nε = 1.685 - 1.691
Max. Birefringence:
δ = 0.010
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Very High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Interference Figure:
This shows the idealized uniaxial interference figure - the conoscopic
(convergent-light, Bertrand-lens-in) view, for a grain cut with the optic axis
centred and vertical. The coloured rings are isochromatics, computed with the
same physics as the Michel-Lévy bar above; the dark cross is the isogyre.
For a genuinely uniaxial mineral viewed this way, that cross stays perfectly stationary if you rotate the stage - unlike a biaxial mineral, where it splits apart on rotation. That invariance is itself the standard diagnostic test for telling uniaxial and biaxial minerals apart at the microscope.
For a genuinely uniaxial mineral viewed this way, that cross stays perfectly stationary if you rotate the stage - unlike a biaxial mineral, where it splits apart on rotation. That invariance is itself the standard diagnostic test for telling uniaxial and biaxial minerals apart at the microscope.
Chemistry of Bazirite
Mindat Formula:
BaZr(Si3O9)
Element Weights:
Elements listed:
Common Impurities:
Sn
Crystallography of Bazirite
Crystal System:
Hexagonal
Class (H-M):
6m2 - Ditrigonal Dipyramidal
Space Group:
P6c2
Cell Parameters:
a = 6.75 Å, c = 9.98 Å
Ratio:
a:c = 1 : 1.479
Unit Cell V:
393.79 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Crystals rarely entirely euhedral, prismatic with partially developed pyramidal terminations, more commonly anhedral to subhedral, < 1 mm.
Crystal Structure
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2x2x2 | 3x3x3 | 4x4x4
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0014809 | Bazirite | Hawthorne F C (1987) The crystal chemistry of the benitoite group minerals and structural relations in (Si3O9) ring structures Rockall Island, Scotland Neues Jahrbuch fur Mineralogie, Monatshefte 1987 16-30 | 1987 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.80 Å | (100) |
| 2.800 Å | (100) |
| 5.85 Å | (35) |
| 3.38 Å | (35) |
| 2.93 Å | (30) |
| 2.012 Å | (30) |
| 2.213 Å | (25) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4a: Earth’s earliest continental crust | >4.4-3.0 |
| 19 : Granitic intrusive rocks | |
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 35 : Ultra-alkali and agpaitic igneous rocks |
Type Occurrence of Bazirite
General Appearance of Type Material:
Single or clustered, colourless anhedral grains and as subhedral or, more rarely, euhedral prismatic crystals with partially developed pyramidal terminations. Grains and crystals are up to about 0.25 x 0.25 x 0.65 mm and contain numerous minute cavities and inclusions.
Place of Conservation of Type Material:
The Natural History Museum, London, England, MI 36445.
Geological Setting of Type Material:
A late-stage interstitial mineral in aegirine-riebeckite granite.
Associated Minerals at Type Locality:
Synonyms of Bazirite
Other Language Names for Bazirite
Relationship of Bazirite to other Species
Member of:
Other Members of Benitoite Group:
| Benitoite | BaTi(Si3O9) | Hex. 6m2 : P62c |
| Kopylovite | K2Ti(Si3O9) | Hex. 6/m : P63/m |
| Pabstite | Ba(Sn,Ti)(Si3O9) | Hex. 6m2 : P6c2 |
| Wadeite | K2Zr(Si3O9) | Hex. 6/m : P63/m |
Common Associates
Associations Based on Photo Data:
| 10 photos of Bazirite associated with Celsian | Ba(Al2Si2O8) |
| 7 photos of Bazirite associated with Fresnoite | Ba2Ti(Si2O7)O |
| 5 photos of Bazirite associated with Walstromite | BaCa2(Si3O9) |
| 2 photos of Bazirite associated with Titantaramellite | Ba4(Ti,Fe3+,Fe2+,Mg)4(B2Si8O27)O2Clx |
| 2 photos of Bazirite associated with Sanbornite | BaSi2O5 |
| 2 photos of Bazirite associated with Pyrrhotite | Fe1-xS |
| 2 photos of Bazirite associated with Quartz | SiO2 |
| 2 photos of Bazirite associated with Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| 1 photo of Bazirite associated with Diopside | CaMgSi2O6 |
| 1 photo of Bazirite associated with Fluornatropyrochlore | (Na,Pb,Ca,REE,U)2Nb2O6F |
Related Minerals - Strunz-mindat Grouping
| 9.CA. | 'UM1975-18-SiO:Mn' | α-MnSiO3 |
| 9.CA. | Raudseppite | Ba2Ca7(Si3O9)2(CO3)2Cl2 |
| 9.CA. | Kopylovite | K2Ti(Si3O9) |
| 9.CA.05 | Benitoite | BaTi(Si3O9) |
| 9.CA.05 | Pabstite | Ba(Sn,Ti)(Si3O9) |
| 9.CA.10 | Wadeite | K2Zr(Si3O9) |
| 9.CA.15 | Calciocatapleiite | CaZr(Si3O9) · 2H2O |
| 9.CA.15 | Catapleiite | Na2Zr(Si3O9) · 2H2O |
| 9.CA.20 | Pseudowollastonite | CaSiO3 |
| 9.CA.25 | Margarosanite | Ca2PbSi3O9 |
| 9.CA.25 | Walstromite | BaCa2(Si3O9) |
| 9.CA.25 | Anatolygurbanovite | SrCa2Si3O9 |
| 9.CA.25 | Breyite | Ca3Si3O9 |
| 9.CA.30 | Bobtraillite | (Na,◻)12(◻,Na)12Sr12Zr14(Si3O9)10[Si2BO7(OH)2]6 · 12H2O |
| 9.CA.35 | Rogermitchellite | Na6Sr12Ba2Zr13Si39B4O123(OH)6 · 20H2O |
Fluorescence of Bazirite
Does not fluoresce under long-wave UV light. Pale blue fluorescence under short-wave UV.
Other Information
Notes:
strong blue cathodoluminescence.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Bazirite
mindat.org URL:
https://www.mindat.org/min-585.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Bazirite
Reference List:
Fleischer, Michael, Pabst, Adolf, Mandarino, Joseph A., Chao, George Y., Cabri, Louis, J. (1976) New Mineral Names. American Mineralogist, 61 (1-2) 174-186 p.175
Young, B. R., Hawkes, J. R., Merriman, R. J., Styles, M. T. (1978) Bazirite, BaZrSi3O9, a new mineral from Rockall Island, Inverness-shire, Scotland. Mineralogical Magazine, 42 (321) 35-40 doi:10.1180/minmag.1978.042.321.04
Fleischer, Michael, Chao, George Y., Pabst, and Adolf (1979) New Mineral Names. American Mineralogist, 64 (1-2) 241-245
Alfors, John T., Pabst, Adolf (1984) Titanian taramellites in western North America. American Mineralogist, 69 (3-4) 358-373
Localities for Bazirite
Showing 18 localities.
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and 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).
All localities listed without proper references should be considered as questionable.
Canada | |
| Macquistan et al. (2023) |
Czech Republic | |
| Elsevier. +3 other references |
India | |
| Middlemost et al. (1988) +1 other reference |
Kyrgyzstan | |
| Pautov et al. (2013) |
Mexico | |
| Richard Gunter Collection. |
| Alfors et al. (1984) +1 other reference |
Mongolia | |
| Pavel M. Kartashov (n.d.) |
Tajikistan | |
| Pautov (2003) |
UK | |
| Tindle (2008) | |
| Judd +10 other references |
| Mineralogical Society of America - ... | |
USA | |
| Walstrom (n.d.) +2 other references |
| Walstrom (n.d.) +1 other reference | |
| Walstrom (n.d.) |
| Walstrom (n.d.) | |
| Walstrom (n.d.) | |
| Marek Patus +1 other reference | |
| Dunning et al. (2003) |
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Esquire No. 8 claim, Big Creek, Big Creek-Rush Creek Mining District, Fresno County, California, USA