In the center of the Rift Valley, about 90 km N of Nairobi.
A Halocene shield volcano that is 2,356 meters (7,730 feet) high. It is the southernmost caldera of the Kenya rift system. Several eruptions have created a variety of interesting features. The latest eruptions may be as recent as 100 years ago. The outer crater is approximately 10km in diameter and is breached on its south and east sides where lava flows poured down the slopes. Many of the less viscous pahoehoe flows are honeycombed with caves. An inner crater is 4 to 5km in diameter and contains a raft-like structure (tilted island block of caldera floor lava flows) surrounded by a deep "moat".
Mineral ListMineral list contains entries from the region specified including sub-localities
22 entries listed. 18 valid minerals.
Localities in this Region
The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.
J. Petrology (1969) 10 (3): 409-439.
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New Locality Added: Pegmatite locality 1, Frøyså, Iveland, Aust-Agder, NorwayFrom Olav Revheim, 20th Dec 2014 19:25:08