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Manbhoom meteorite, Purulia District, West Bengal, Indiai
| Regional Level Types | |
|---|---|
| Manbhoom meteorite | Meteorite Fall Location |
| Purulia District | District |
| West Bengal | State |
| India | Country |
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Latitude & Longitude (WGS84):
23° 3' North , 86° 42' East
Latitude & Longitude (decimal):
Meteorite Class:
Meteoritical Society Class:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Khātra | 16,484 (2014) | 17.8km |
| Kenda | 15,131 (2014) | 24.9km |
| Bānkura | 133,966 (2014) | 43.0km |
| Puruliya | 122,533 (2014) | 46.5km |
| Balarāmpur | 22,847 (2014) | 49.1km |
Ordinary chondrite (LL6; S3)
Fell, 22 December 1863; 1.7 kg
After detonations, several stones were found near the villages of Govindpur, Pandra, and Cossipore. Most of the mass (1.5 kg) was in the the largest fragment. While individual grains of olivine and orthopyroxene (along with relict chondrules) are present, much of the Manbhoom matrix consists of extremely fine grains of silicate (<.02 mm). A few moderate-sized Fe-Ni grains (≤ 1 mm) are visible, but most of the metal is disseminated as fine particles within the matrix. Total iron [~19 wt%] along with olivine [Fa31] and orthopyroxene ['hypersthene'] compositions are characteristic of the LL chondrite geochemical group. Mineralogically, dominant olivine and prominent orthopyroxene are accompanied by minor albitic plagioclase ('oligoclase'), troilite, Fe-Ni metal, and chromite. Fe-Ni metal includes the unusual Co-rich wairauite. Very small amounts of ilmenite, phosphates, and other sulfides have also been reported. A cosmic ray exposure age of 15.8 Ma has been reported.
The main mass has been retained by the Indian Geological Survey [661 g] with a smaller mass [~300 g] held by the American Museum of Natural History (New York) [as of 2000].
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
11 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:
| ⓘ Chlorapatite Formula: Ca5(PO4)3Cl |
| ⓘ Chromite Formula: Fe2+Cr3+2O4 |
| ⓘ Diopside Formula: CaMgSi2O6 |
| ⓘ 'Fayalite-Forsterite Series' References: |
| ⓘ Ilmenite Formula: Fe2+TiO3 |
| ⓘ Isocubanite Formula: CuFe2S3 |
| ⓘ Mackinawite Formula: FeS |
| ⓘ Native Iron Formula: Fe |
| ⓘ Native Iron var. Kamacite Formula: (Fe,Ni) |
| ⓘ 'Orthopyroxene Subgroup' References: |
| ⓘ 'Plagioclase' Formula: (Na,Ca)[(Si,Al)AlSi2]O8 Description: Composition [An10.5 Ab85.8Or3.7] and [Ab85An8Or7] according to Van Schmus & Ribbe (1968) and Szurgot (2013), resp.
References: |
| ⓘ Schreibersite Formula: (Fe,Ni)3P |
| ⓘ Taenite Formula: (Fe,Ni) |
| ⓘ Troilite Formula: FeS |
| ⓘ Wairauite Formula: CoFe |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Iron | 1.AE.05 | Fe |
| ⓘ | var. Kamacite | 1.AE.05 | (Fe,Ni) |
| ⓘ | Taenite | 1.AE.10 | (Fe,Ni) |
| ⓘ | Wairauite | 1.AE.15 | CoFe |
| ⓘ | Schreibersite | 1.BD.05 | (Fe,Ni)3P |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Isocubanite | 2.CB.55b | CuFe2S3 |
| ⓘ | Troilite | 2.CC.10 | FeS |
| ⓘ | Mackinawite | 2.CC.25 | FeS |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
| ⓘ | Ilmenite | 4.CB.05 | Fe2+TiO3 |
| Group 8 - Phosphates, Arsenates and Vanadates | |||
| ⓘ | Chlorapatite | 8.BN.05 | Ca5(PO4)3Cl |
| Group 9 - Silicates | |||
| ⓘ | Diopside | 9.DA.15 | CaMgSi2O6 |
| Unclassified | |||
| ⓘ | 'Fayalite-Forsterite Series' | - | |
| ⓘ | 'Plagioclase' | - | (Na,Ca)[(Si,Al)AlSi2]O8 |
| ⓘ | 'Orthopyroxene Subgroup' | - | |
List of minerals for each chemical element
Other Regions, Features and Areas containing this locality
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References
Bunch, T.E., Keil, Klaus, Snetsinger, K.G. (1967) Chromite composition in relation to chemistry and texture of ordinary chondrites. Geochimica et Cosmochimica Acta, 31 (10). 1569-1582 doi:10.1016/0016-7037(67)90105-6
