Bhola meteorite, Bhola District, Barisal Division, Bangladeshi
| Regional Level Types | |
|---|---|
| Bhola meteorite | Meteorite Fall Location |
| Bhola District | District |
| Barisal Division | Division |
| Bangladesh | Country |
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Latitude & Longitude (WGS84):
22° 40' 59'' North , 90° 39' 0'' East
Latitude & Longitude (decimal):
Locality type:
Meteorite Class:
Meteoritical Society Class:
KΓΆppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Bhola | 99,079 (2016) | 0.8km |
| Mehendiganj | 39,424 (2016) | 19.9km |
| BurhΔnuddin | 45,670 (2016) | 22.2km |
| BarisΔl | 202,242 (2016) | 28.8km |
| LakshmΔ«pur | 61,703 (2016) | 34.4km |
Unequilibrated ordinary chondrite, brecciated (LL3-6)
Fall, 27 March 1940; 1.047 kg
Three pieces (841 g, 184 g, 22 g) of a brecciated meteoritic stone were recovered. The average composition of the olivine is moderately well defined (Fa27.8), but pyroxene is much more variable (Fs4-25 in one report). Chondrules and lithic fragments are well defined, but fine-grained, sometimes glassy and K-enriched matrix is more prominent than in many LL chondrites. While olivine, pyroxene, Fe-Ni metal, troilite, and the minor accessories (augite, chromite, merrillite, plagioclase) are more or less expected in LL chondrites, the odd potassium abundances in some of the smaller assemblages have attracted considerable interest.
As of mid-2015 14 witnessed meteorite falls have been classified as type 3 unequilibrated LL (very low bulk iron) ordinary chondrites, but only two of these falls β Adzhi-Bogdo (stone) and Bhola β have been classified specifically as petrologic 'LL3-6'. The LL3-6 label is a shorthand for describing mechanical mixtures consisting of unequilibrated (type 3), partially equilibrated (types 4-5), and equilibrated (type 6) components. Some post-shock re-equilibration appears to have occurred for some components after they were brought together by impacts on the original parent body [or by later impacts]. The components which eventually reached the earth, however, are still often unequilibrated on all but the smallest scales.
The main mass is held by the Geological Survey of India (Calcutta).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
7 valid minerals.
Meteorite/Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| β Augite Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6 Reference: Fredriksson, K., Noonan, A., & Nelen, J. (1974) The Bhola stone - a true polymict breccia? Meteoritics 9: 338-339. (Dec 1974). |
| β Chromite Formula: Fe2+Cr3+2O4 Reference: Yokoyama,Β T. & Misawa,Β K. (2009) K-rich Fragments in Yamato-74442 and Bhola LL-Chondritic Breccias: Meteoritics & Planetary Science 44, Supplement: p. A225, pdf#5236. (Sept 2009).; Wlotzka et al. (1983) Alkali differentiation in LL-chondrites: Geochimica et Cosmochimica Acta 47(4): 743-757. (April 1983). |
| β 'Clinopyroxene Subgroup' Reference: Wlotzka et al. (1983) Alkali differentiation in LL-chondrites: Geochimica et Cosmochimica Acta 47(4): 743-757. (April 1983). |
| β 'Fayalite-Forsterite Series' Description: Normal compositional range is restricted(Fa27-30), but compositions such as Fa18 in one grain have been noted. Olivine grains are often cracked. Reference: Mason, B.H. (1963) Olivine composition in chondrites. Geochimica et Cosmochimica Acta 27, 1011-1023.; Fredriksson, K., Noonan, A., & Nelen, J. (1974) The Bhola stone - a true polymict breccia? Meteoritics 9: 338-339. (Dec 1974).; Scott, E.R.D. & Rajan, R.S. (1981) Metallic minerals, thermal histories and parent bodies of some xenolithic, ordinary chondrite meteorites: Geochimica et Cosmochimica Acta, vol. 45:53-67. (Jan 1981).; Yokoyama,Β T. & Misawa,Β K. (2009) K-rich Fragments in Yamato-74442 and Bhola LL-Chondritic Breccias: Meteoritics & Planetary Science 44, Supplement: p. A225, pdf#5236. (Sept 2009).; Wlotzka et al. (1983) Alkali differentiation in LL-chondrites: Geochimica et Cosmochimica Acta 47(4): 743-757. (April 1983). |
| β 'Glass' Description: Brown glass frequently noted. Reference: Fredriksson, K., Noonan, A., & Nelen, J. (1974) The Bhola stone - a true polymict breccia? Meteoritics 9: 338-339. (Dec 1974).; Yokoyama,Β T. & Misawa,Β K. (2009) K-rich Fragments in Yamato-74442 and Bhola LL-Chondritic Breccias: Meteoritics & Planetary Science 44, Supplement: p. A225, pdf#5236. (Sept 2009).; Wlotzka et al. (1983) Alkali differentiation in LL-chondrites: Geochimica et Cosmochimica Acta 47(4): 743-757. (April 1983). |
| β Iron Formula: Fe Reference: Scott, E.R.D. & Rajan, R.S. (1981) Metallic minerals, thermal histories and parent bodies of some xenolithic, ordinary chondrite meteorites: Geochimica et Cosmochimica Acta, vol. 45:53-67. (Jan 1981). |
| β Iron var. Kamacite Formula: (Fe,Ni) Reference: Scott, E.R.D. & Rajan, R.S. (1981) Metallic minerals, thermal histories and parent bodies of some xenolithic, ordinary chondrite meteorites: Geochimica et Cosmochimica Acta, vol. 45:53-67. (Jan 1981). |
| β 'K Feldspar' Formula: KAlSi3O8 Description: K-rich feldspars are associated with olivine and troilite in dark inclusions. Reference: Wlotzka et al. (1983) Alkali differentiation in LL-chondrites: Geochimica et Cosmochimica Acta 47(4): 743-757. (April 1983). |
| β Merrillite Formula: Ca9NaMg(PO4)7 Reference: Kothari, B. K. & Rajan, R. S. (1980) Brecciation Chronology of Xenolithic Chondrites Using Fission Tracks (Abstract.): Lunar and Planetary Science XI: 573-575. |
| β 'Orthopyroxene Subgroup' Reference: Wlotzka et al. (1983) Alkali differentiation in LL-chondrites: Geochimica et Cosmochimica Acta 47(4): 743-757. (April 1983). |
| β 'Plagioclase' Formula: (Na,Ca)[(Si,Al)AlSi2]O8 Description: Plagioclase is normally Ca-rich-- An10-12 reported by Fredriksson et al.,1974. Reference: Fredriksson, K., Noonan, A., & Nelen, J. (1974) The Bhola stone - a true polymict breccia? Meteoritics 9: 338-339. (Dec 1974). |
| β 'Plessite' Reference: Scott, E.R.D. & Rajan, R.S. (1981) Metallic minerals, thermal histories and parent bodies of some xenolithic, ordinary chondrites. G&CA 45: 53-67. |
| β 'Pyroxene Group' Formula: ADSi2O6 Description: Ca-poorPyroxene Mg-rich and variable [Fs4-25,mean8.6], Wlotzka et al. (1983). Reference: Fredriksson, K., Noonan, A., & Nelen, J. (1974) The Bhola stone - a true polymict breccia? Meteoritics 9: 338-339. (Dec 1974). |
| β Taenite Formula: (Fe,Ni) Reference: Scott, E.R.D. & Rajan, R.S. (1981) Metallic minerals, thermal histories and parent bodies of some xenolithic, ordinary chondrite meteorites: Geochimica et Cosmochimica Acta, vol. 45:53-67. (Jan 1981). |
| β Tetrataenite Formula: FeNi Reference: Scott, E.R.D. & Rajan, R.S. (1981) Metallic minerals, thermal histories and parent bodies of some xenolithic, ordinary chondrite meteorites: Geochimica et Cosmochimica Acta, vol. 45:53-67. (Jan 1981). |
| β Troilite Formula: FeS Reference: Scott, E.R.D. & Rajan, R.S. (1981) Metallic minerals, thermal histories and parent bodies of some xenolithic, ordinary chondrite meteorites: Geochimica et Cosmochimica Acta, vol. 45:53-67. (Jan 1981).; Yokoyama,Β T. & Misawa,Β K. (2009) K-rich Fragments in Yamato-74442 and Bhola LL-Chondritic Breccias: Meteoritics & Planetary Science 44, Supplement: p. A225, pdf#5236. (Sept 2009).; Wlotzka et al. (1983) Alkali differentiation in LL-chondrites: Geochimica et Cosmochimica Acta 47(4): 743-757. (April 1983). |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| β | Iron | 1.AE.05 | Fe |
| β | var. Kamacite | 1.AE.05 | (Fe,Ni) |
| β | Taenite | 1.AE.10 | (Fe,Ni) |
| β | Tetrataenite | 1.AE.10 | FeNi |
| Group 2 - Sulphides and Sulfosalts | |||
| β | Troilite | 2.CC.10 | FeS |
| Group 4 - Oxides and Hydroxides | |||
| β | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
| Group 8 - Phosphates, Arsenates and Vanadates | |||
| β | Merrillite | 8.AC.45 | Ca9NaMg(PO4)7 |
| Group 9 - Silicates | |||
| β | Augite | 9.DA.15 | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Unclassified Minerals, Rocks, etc. | |||
| β | 'Clinopyroxene Subgroup' | - | |
| β | 'Fayalite-Forsterite Series' | - | |
| β | 'Glass' | - | |
| β | 'K Feldspar' | - | KAlSi3O8 |
| β | 'Orthopyroxene Subgroup' | - | |
| β | 'Plagioclase' | - | (Na,Ca)[(Si,Al)AlSi2]O8 |
| β | 'Plessite' | - | |
| β | 'Pyroxene Group' | - | ADSi2O6 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | β Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| O | β Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| O | β Pyroxene Group | ADSi2O6 |
| O | β Merrillite | Ca9NaMg(PO4)7 |
| O | β Chromite | Fe2+Cr23+O4 |
| O | β K Feldspar | KAlSi3O8 |
| Na | Sodium | |
| Na | β Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Na | β Merrillite | Ca9NaMg(PO4)7 |
| Mg | Magnesium | |
| Mg | β Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Mg | β Merrillite | Ca9NaMg(PO4)7 |
| Al | Aluminium | |
| Al | β Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Al | β K Feldspar | KAlSi3O8 |
| Si | Silicon | |
| Si | β Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Si | β Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Si | β Pyroxene Group | ADSi2O6 |
| Si | β K Feldspar | KAlSi3O8 |
| P | Phosphorus | |
| P | β Merrillite | Ca9NaMg(PO4)7 |
| S | Sulfur | |
| S | β Troilite | FeS |
| K | Potassium | |
| K | β K Feldspar | KAlSi3O8 |
| Ca | Calcium | |
| Ca | β Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Ca | β Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Ca | β Merrillite | Ca9NaMg(PO4)7 |
| Cr | Chromium | |
| Cr | β Chromite | Fe2+Cr23+O4 |
| Fe | Iron | |
| Fe | β Augite | (CaxMgyFez)(Mgy1Fez1)Si2O6 |
| Fe | β Iron var. Kamacite | (Fe,Ni) |
| Fe | β Taenite | (Fe,Ni) |
| Fe | β Tetrataenite | FeNi |
| Fe | β Troilite | FeS |
| Fe | β Chromite | Fe2+Cr23+O4 |
| Fe | β Iron | Fe |
| Ni | Nickel | |
| Ni | β Iron var. Kamacite | (Fe,Ni) |
| Ni | β Taenite | (Fe,Ni) |
| Ni | β Tetrataenite | FeNi |
References
Sort by
Year (asc) Year (desc) Author (A-Z) Author (Z-A)Mason, B.H. (1963) Olivine composition in chondrites. Geochimica et Cosmochimica Acta: 27: 1011-1023.
Fredriksson, K., Noonan, A., Nelen, J. (1974) The Bhola stone - a true polymict breccia? Meteoritics: 9: 338-339 (Dec 1974).
Kothari, B.K., Rajan, R.S. (1980) Brecciation Chronology of Xenolithic Chondrites Using Fission Tracks (Abstract.): Lunar and Planetary Science: XI: 573-575.
Scott, E.R.D., Rajan, R.S. (1981) Metallic minerals, thermal histories and parent bodies of some xenolithic, ordinary chondrite meteorites: Geochimica et Cosmochimica Acta: 45: 53-67 (Jan 1981).
Graham, A.L., Bevan, A.W.R., Hutchison, B. (1985) Catalogue of Meteorites (4/e). University of Arizona Press: Tucson.
Grady, M.M. (2000) Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge; New York; Oakleigh; Madrid; Cape Town. 689 pages.
Wlotzka, F. (2005) Cr spinel and chromite as petrogenetic indicators in ordinary chondrites: Equilibrium temperatures of petrologic type 3.7 to 6. Meteoritics & Planetary Science: 40 (11): 1673-1702 (Nov 2005).
Yokoyama,Β T., Misawa,Β K. (2009) K-rich Fragments in Yamato-74442 and Bhola LL-Chondritic Breccias: Meteoritics & Planetary Science 44, Supplement: A225, pdf#5236 (Sept 2009).
External Links
http://www.lpi.usra.edu/meteor/metbull.php - Meteoritical Bulletin Database
http://www.lpi.usra.edu/meteor/metbull.php?code=5040 -Bhola@MetBullDatabase
http://www.lpi.usra.edu/meetings/metsoc2009/pdf/5236.pdf -K-rich fragments
http://www.lpi.usra.edu/meteor/metbull.php?code=5040 -Bhola@MetBullDatabase
http://www.lpi.usra.edu/meetings/metsoc2009/pdf/5236.pdf -K-rich fragments
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