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

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

External Links