Tonk meteorite, Baran district, Rajasthan, Indiai
| Regional Level Types | |
|---|---|
| Tonk meteorite | Meteorite Fall Location |
| Baran district | Municipality |
| Rajasthan | State |
| India | Country |
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Key
Latitude & Longitude (WGS84):
24° 38' 59'' North , 76° 52' 0'' East
Latitude & Longitude (decimal):
Locality type:
Meteorite Class:
Meteoritical Society Class:
Köppen climate type:
Fall, 22 January 1911; mass = 7.7 g.
CI1 (Ivuna-like) Carbonaceous Chondrite.
Near midday of 22 January 1911 after a bolide appeared, detonations were heard, and a shower of stones fell near Chhabra, Tonk State, Rajasthan, India. However, only a small amount has been preserved (7.7 g). Tonk is one of only 5 witnessed CI1 carbonaceous chondrite falls. However, as CI1 chondrites are arguably the most compositionally representative of the ancient solar nebula among all meteorite groups, even the tiny Tonk has been included in occasional meteorite studies. CI1 chondrites do not actually have chondrules, but their near solar Mg/Si ratios and oxygen isotope ratios place them clearly within the Carbonaceous Chondrite Class.
Select Mineral List Type
Standard Detailed Strunz Dana Chemical ElementsMineral List
6 valid minerals.
Meteorite/Rock Types Recorded
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Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Dolomite Formula: CaMg(CO3)2 Reference: Magnus Endress, Bernhard Spettel & Adolf Bischoff (1994). Chemistry, petrography, and mineralogy of the Tonk CI chondrite: Preliminary results. Meteoritics 29, #4, p. 462-463. (July 1994). |
| ⓘ Magnesite Formula: MgCO3 Reference: Magnus Endress, Bernhard Spettel & Adolf Bischoff (1994). Chemistry, petrography, and mineralogy of the Tonk CI chondrite: Preliminary results. Meteoritics 29, #4, p. 462-463. (July 1994). |
| ⓘ Magnesite var: Breunnerite Formula: (Mg,Fe)CO3 Reference: Magnus Endress, Bernhard Spettel & Adolf Bischoff (1994). Chemistry, petrography, and mineralogy of the Tonk CI chondrite: Preliminary results. Meteoritics 29, #4, p. 462-463. (July 1994). |
| ⓘ Magnetite Formula: Fe2+Fe3+2O4 Reference: Brian Harold Mason (1962). Meteorites. John Wiley and Sons, Inc.: New York and London. 274 pages. |
| ⓘ Pentlandite Formula: (FexNiy)Σ9S8 Reference: E. S. Bullock, Matthieu Gounelle, Dante S. Lauretta, Monica. M. Grady & Sara S. Russell (2005). Mineralogy and texture of Fe-Ni sulfides in CI1 chondrites: Clues to the extent of aqueous alteration on the CI1 parent body. Geochimica et Cosmochimica Acta, Vol. 69, #10, 2687–2700. (2005). |
| ⓘ Pyrrhotite Formula: Fe7S8 Reference: E. S. Bullock, Matthieu Gounelle, Dante S. Lauretta, Monica. M. Grady & Sara S. Russell (2005). Mineralogy and texture of Fe-Ni sulfides in CI1 chondrites: Clues to the extent of aqueous alteration on the CI1 parent body. Geochimica et Cosmochimica Acta, Vol. 69, #10, 2687–2700. (2005). |
| ⓘ Sulphur Formula: S8 Reference: W. A. K. Christie (1914). The composition of the Tonk Meteorite. The Journal of the Astronomical Society of India, Vol. 4, #2, 71-72. (Jan 1914). |
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Sulphur | 1.CC.05 | S8 |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Pentlandite | 2.BB.15 | (FexNiy)Σ9S8 |
| ⓘ | Pyrrhotite | 2.CC.10 | Fe7S8 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Dolomite | 5.AB.10 | CaMg(CO3)2 |
| ⓘ | Magnesite | 5.AB.05 | MgCO3 |
| ⓘ | var: Breunnerite | 5.AB.05 | (Mg,Fe)CO3 |
List of minerals arranged by Dana 8th Edition classification
| Group 1 - NATIVE ELEMENTS AND ALLOYS | |||
|---|---|---|---|
| Semi-metals and non-metals | |||
| ⓘ | Sulphur | 1.3.5.1 | S8 |
| Group 2 - SULFIDES | |||
| AmBnXp, with (m+n):p = 9:8 | |||
| ⓘ | Pentlandite | 2.7.1.1 | (FexNiy)Σ9S8 |
| AmXp, with m:p = 1:1 | |||
| ⓘ | Pyrrhotite | 2.8.10.1 | Fe7S8 |
| Group 7 - MULTIPLE OXIDES | |||
| AB2X4 | |||
| ⓘ | Magnetite | 7.2.2.3 | Fe2+Fe3+2O4 |
| Group 14 - ANHYDROUS NORMAL CARBONATES | |||
| A(XO3) | |||
| ⓘ | Magnesite | 14.1.1.2 | MgCO3 |
| AB(XO3)2 | |||
| ⓘ | Dolomite | 14.2.1.1 | CaMg(CO3)2 |
| Unclassified Minerals, Mixtures, etc. | |||
| ⓘ | Magnesite var: Breunnerite | - | (Mg,Fe)CO3 |
List of minerals for each chemical element
| C | Carbon | |
|---|---|---|
| C | ⓘ Magnesite (var: Breunnerite) | (Mg,Fe)CO3 |
| C | ⓘ Dolomite | CaMg(CO3)2 |
| C | ⓘ Magnesite | MgCO3 |
| O | Oxygen | |
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| O | ⓘ Magnesite (var: Breunnerite) | (Mg,Fe)CO3 |
| O | ⓘ Dolomite | CaMg(CO3)2 |
| O | ⓘ Magnesite | MgCO3 |
| Mg | Magnesium | |
| Mg | ⓘ Magnesite (var: Breunnerite) | (Mg,Fe)CO3 |
| Mg | ⓘ Dolomite | CaMg(CO3)2 |
| Mg | ⓘ Magnesite | MgCO3 |
| S | Sulfur | |
| S | ⓘ Pentlandite | (FexNiy)Σ9S8 |
| S | ⓘ Pyrrhotite | Fe7S8 |
| S | ⓘ Sulphur | S8 |
| Ca | Calcium | |
| Ca | ⓘ Dolomite | CaMg(CO3)2 |
| Fe | Iron | |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
| Fe | ⓘ Pentlandite | (FexNiy)Σ9S8 |
| Fe | ⓘ Pyrrhotite | Fe7S8 |
| Fe | ⓘ Magnesite (var: Breunnerite) | (Mg,Fe)CO3 |
| Ni | Nickel | |
| Ni | ⓘ Pentlandite | (FexNiy)Σ9S8 |
References
Sort by
Year (asc) Year (desc) Author (A-Z) Author (Z-A)W. A. K. Christie (1914). The composition of the Tonk Meteorite. The Journal of the Astronomical Society of India, Vol. 4, #2, 71-72. (Jan 1914).
Magnus Endress, Bernhard Spettel & Adolf Bischoff (1994). Chemistry, petrography, and mineralogy of the Tonk CI chondrite: Preliminary results. Meteoritics 29, #4, p. 462-463. (July 1994).
Monica M. Grady (2000). Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge, New York, Oakleigh, Madrid, Cape Town. 690 pages.
Other Regions, Features and Areas containing this locality
AsiaContinent
Indian Plate (India Plate)Tectonic Plate
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