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Kalaba meteorite, Tanganyika, DR Congoi
Regional Level Types
Kalaba meteoriteMeteorite Fall Location
TanganyikaProvince
DR CongoCountry

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Latitude & Longitude (WGS84): 6° 49' 59'' South , 29° 30' 0'' East
Latitude & Longitude (decimal): -6.83333,29.50000
GeoHash:G#: kwucpk10z
Locality type:Meteorite Fall Location
Meteorite Class:H4 chondrite meteorite
Meteoritical Society Class:H4
Metbull:View entry in Meteoritical Bulletin Database
Köppen climate type:Aw : Tropical savanna, wet
Other/historical names associated with this locality:Zaïre


Ordinary chondrite (H4)
Fell, 31 October 1951,17:30 hrs; 950 g

Two pieces were found near Moba, but only one was preserved. A third fragment may have fallen ~15 km away. Mineralogically the meteorite consists primarily of dominant olivine with low-Ca pyroxene along with minor amounts of Fe-Ni metal, troilite, and other silicates. Accessory chromite and ilmenite are also reported. Some unusual silica-bearing chondrules have merited recent attention.

Kalaba's 8.5 Ma cosmic ray exposure (CRE) age is part of a peak in CRE ages for H-group chondrites, suggesting that Kalaba was perhaps involved in a major collision along with other recent H chondrite falls.

The H (relatively high in total iron) chondrites are the second largest group of ordinary chondrite falls and represent nearly 40% of well-classified and witnessed meteorite falls. As of late May 2017 Kalaba was one of the 62 H4 chondrites, a petrologic type representing less than 20 % of the H chondrites. [Ochansk, an 1887 Russian fall, is the most massive witnessed H4 fall.] Kalaba's main mass has been preserved at the Museum Grand Séminaire in Moba with very small fragments elsewhere.

Regions containing this locality

Central Africa

Region - 525 mineral species & varietal names listed

Katanga, DR Congo

Province (Historical) - 0 mineral species & varietal names listed

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


6 valid minerals.

Meteorite/Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Chromite
Formula: Fe2+Cr3+2O4
Reference: Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
'Fayalite-Forsterite Series'
Reference: Graham, A.L., Bevan, A.W.R. & Hutchison, B. (1985) Catalogue of Meteorites (4/e). University of Arizona Press: Tucson.
'H4 chondrite meteorite'
Reference: Meteoritical Society Database
Ilmenite
Formula: Fe2+TiO3
Reference: Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
Iron
Formula: Fe
Reference: Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
Iron var: Kamacite
Formula: (Fe,Ni)
Reference: Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
'Plessite'
Reference: Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
'Pyroxene Group'
Description: Classified as an 'Olivine-bronzite' chondrite.
Reference: Graham, A.L., Bevan, A.W.R. & Hutchison, B. (1985) Catalogue of Meteorites (4/e). University of Arizona Press: Tucson.
Spinel
Formula: MgAl2O4
Reference: Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
Taenite
Formula: (Fe,Ni)
Reference: Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
Troilite
Formula: FeS
Reference: Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Iron'1.AE.05Fe
var: Kamacite1.AE.05(Fe,Ni)
Taenite1.AE.10(Fe,Ni)
Group 2 - Sulphides and Sulfosalts
Troilite2.CC.10FeS
Group 4 - Oxides and Hydroxides
'Chromite'4.BB.05Fe2+Cr3+2O4
'Ilmenite'4.CB.05Fe2+TiO3
Spinel4.BB.05MgAl2O4
Unclassified Minerals, Rocks, etc.
'Fayalite-Forsterite Series'-
'H4 chondrite meteorite'-
Plessite-
Pyroxene Group-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Iron
var: Kamacite
1.1.11.1(Fe,Ni)
Taenite1.1.11.2(Fe,Ni)
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Troilite2.8.9.1FeS
Group 4 - SIMPLE OXIDES
A2X3
Ilmenite4.3.5.1Fe2+TiO3
Group 7 - MULTIPLE OXIDES
AB2X4
Chromite7.2.3.3Fe2+Cr3+2O4
Spinel7.2.1.1MgAl2O4
Unclassified Minerals, Rocks, etc.
'Fayalite-Forsterite Series'-
'H4 chondrite meteorite'-
Iron-Fe
'Plessite'-
'Pyroxene Group'-

List of minerals for each chemical element

OOxygen
O ChromiteFe2+Cr23+O4
O IlmeniteFe2+TiO3
O SpinelMgAl2O4
MgMagnesium
Mg SpinelMgAl2O4
AlAluminium
Al SpinelMgAl2O4
SSulfur
S TroiliteFeS
TiTitanium
Ti IlmeniteFe2+TiO3
CrChromium
Cr ChromiteFe2+Cr23+O4
FeIron
Fe ChromiteFe2+Cr23+O4
Fe IlmeniteFe2+TiO3
Fe IronFe
Fe Iron (var: Kamacite)(Fe,Ni)
Fe Taenite(Fe,Ni)
Fe TroiliteFeS
NiNickel
Ni Iron (var: Kamacite)(Fe,Ni)
Ni Taenite(Fe,Ni)

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Stenian - Ectasian
1000 - 1400 Ma



ID: 3185560
Mesoproterozoic sedimentary rocks

Age: Mesoproterozoic (1000 - 1400 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Neoarchean
2500 - 2800 Ma



ID: 3311518

Age: Neoarchean (2500 - 2800 Ma)

Lithology: Volcanic-sedimentary and metamorphic

Reference: Thiéblemont, D. (ed.). New edition of the 1:10,000,000 geological map of Africa. CGMW-BRGM. [190]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Krinov, E. L. - Editor (1958) The Meteoritical Bulletin, No. 8. Moscow.
Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
Graham, A.L., Bevan, A.W.R. & Hutchison, B. (1985) Catalogue of Meteorites (4/e). University of Arizona Press: Tucson.
Brigham, C.A. et al. (1986) Silica-bearing chondrules and clasts in ordinary chondrites. Geochimica et Cosmochimica Acta 50(8): 1573-1836. (Aug 1986).
Graf, Th. & Marti K. (1995) Collisional history of H chondrites. J. Geophys. Res. (Planets) 100: 21247–21263. (Oct 1995).
Grady, M.M. (2000). Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge; New York; Oakleigh; Madrid; Cape Town. 689 pages.
Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.

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