Granite is a felsic or acidic rock. A vesicle is a cavity formed by expanding gas during the cooling of an extrusive igneous rock. A good example of vesicles are those found in pumice. If a vesicle is filled in by a secondary mineral it is described as an amygdale.
InformAfrica â Kisii County is a district in the Nyanza Province of southwestern Kenya, and is mostly inhabited by the Gusii tribe or Kisii people. Kisii is the capital town of Kisii county. As of 2010, Kisii county has 7 constituencies which are: Bobasi, Bonchari, Bomachoge, Kitutu Chache, Nyaribari Chache, Nyaribari Masaba, and South Mugirango.
Kisii is a city in south-western Kenya. It is the main urban and commercial center in the Gusii Highlands and the South Nyanza region. A vibrant town, the Kisii municipality has a population of about 400,000, according to 2012 estimates. It has a large dependent metropolitan population of over 100,000 residents, as per the latest national population and housing census of 2009. Kisii town is the capital of the Kisii County.