Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsThe Rock H. Currier Digital LibraryGeologic Time
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral Quiz
Photo SearchPhoto GalleriesSearch by ColorNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography
Nyamaji Volcanic Complex, Homa Bay County, Kenyai
| Regional Level Types | |
|---|---|
| Nyamaji Volcanic Complex | Volcanic Complex |
| Homa Bay County | County |
| Kenya | Country |
This page is currently not sponsored.Click here to sponsor this page.
Latitude & Longitude (WGS84):
0° 29' South , 34° 24' East
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Mindat Locality ID:
406911
Long-form identifier:
mindat:1:2:406911:2
GUID (UUID V4):
775e9699-0125-4756-bef0-8e50bbf20836
Volcanic Complex of about 4 x 2 km situated in the central part of Wasaki Peninsula (Le Bas 1970, 1977). A basal pyroclastic group is partly covered by 300 m of nephelinitic and phonolitic lavas, which were fed from a reticulated system of dikes. Some 60 phonolite dikes up to 3 km long and generally 1 to 15 m thick have been identified and are thought to have been feeders for the lavas.
Select Mineral List Type
StandardDetailedGalleryStrunzChemical ElementsMineral List
6 valid minerals.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical ListTree DiagramDetailed Mineral List:
| ⓘAegirine Formula:NaFe3+Si2O6 |
| ⓘAegirine-augite Formula:(NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6 |
| ⓘ'Alkali Feldspar' |
| ⓘAndradite Formula:Ca3Fe3+2(SiO4)3 |
| ⓘAndradite var. Melanite Formula:Ca3(Fe3+,Ti)2(SiO4)3 |
| ⓘ'K Feldspar' |
| ⓘNepheline Formula:Na3K(Al4Si4O16) |
| ⓘNosean Formula:Na8(Al6Si6O24)(SO4) · H2O |
| ⓘWollastonite Formula:Ca3(Si3O9) |
| ⓘ'Zeolite Group' |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 9 - Silicates | |||
|---|---|---|---|
| ⓘ | Andradite | 9.AD.25 | Ca3Fe3+2(SiO4)3 |
| ⓘ | var. Melanite | 9.AD.25 | Ca3(Fe3+,Ti)2(SiO4)3 |
| ⓘ | Aegirine-augite | 9.DA.20 | (NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6 |
| ⓘ | Aegirine | 9.DA.25 | NaFe3+Si2O6 |
| ⓘ | Wollastonite | 9.DG.05 | Ca3(Si3O9) |
| ⓘ | Nepheline | 9.FA.05 | Na3K(Al4Si4O16) |
| ⓘ | Nosean | 9.FB.10 | Na8(Al6Si6O24)(SO4) · H2O |
| ⓘ | 'Zeolite Group' | 9.G0. | |
| Unclassified | |||
| ⓘ | 'Alkali Feldspar' | - | |
| ⓘ | 'K Feldspar' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘNosean | Na8(Al6Si6O24)(SO4) · H2O |
| O | Oxygen | |
| O | ⓘAegirine | NaFe3+Si2O6 |
| O | ⓘAegirine-augite | (NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6 |
| O | ⓘAndradite | Ca3Fe23+(SiO4)3 |
| O | ⓘNepheline | Na3K(Al4Si4O16) |
| O | ⓘNosean | Na8(Al6Si6O24)(SO4) · H2O |
| O | ⓘWollastonite | Ca3(Si3O9) |
| O | ⓘAndradite var.Melanite | Ca3(Fe3+,Ti)2(SiO4)3 |
| Na | Sodium | |
| Na | ⓘAegirine | NaFe3+Si2O6 |
| Na | ⓘAegirine-augite | (NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6 |
| Na | ⓘNepheline | Na3K(Al4Si4O16) |
| Na | ⓘNosean | Na8(Al6Si6O24)(SO4) · H2O |
| Mg | Magnesium | |
| Mg | ⓘAegirine-augite | (NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6 |
| Al | Aluminium | |
| Al | ⓘAegirine-augite | (NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6 |
| Al | ⓘNepheline | Na3K(Al4Si4O16) |
| Al | ⓘNosean | Na8(Al6Si6O24)(SO4) · H2O |
| Si | Silicon | |
| Si | ⓘAegirine | NaFe3+Si2O6 |
| Si | ⓘAegirine-augite | (NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6 |
| Si | ⓘAndradite | Ca3Fe23+(SiO4)3 |
| Si | ⓘNepheline | Na3K(Al4Si4O16) |
| Si | ⓘNosean | Na8(Al6Si6O24)(SO4) · H2O |
| Si | ⓘWollastonite | Ca3(Si3O9) |
| Si | ⓘAndradite var.Melanite | Ca3(Fe3+,Ti)2(SiO4)3 |
| S | Sulfur | |
| S | ⓘNosean | Na8(Al6Si6O24)(SO4) · H2O |
| K | Potassium | |
| K | ⓘNepheline | Na3K(Al4Si4O16) |
| Ca | Calcium | |
| Ca | ⓘAegirine-augite | (NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6 |
| Ca | ⓘAndradite | Ca3Fe23+(SiO4)3 |
| Ca | ⓘWollastonite | Ca3(Si3O9) |
| Ca | ⓘAndradite var.Melanite | Ca3(Fe3+,Ti)2(SiO4)3 |
| Ti | Titanium | |
| Ti | ⓘAndradite var.Melanite | Ca3(Fe3+,Ti)2(SiO4)3 |
| Fe | Iron | |
| Fe | ⓘAegirine | NaFe3+Si2O6 |
| Fe | ⓘAegirine-augite | (NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6 |
| Fe | ⓘAndradite | Ca3Fe23+(SiO4)3 |
| Fe | ⓘAndradite var.Melanite | Ca3(Fe3+,Ti)2(SiO4)3 |
Geochronology
Mineralization age:Miocene : 18.3 ± 0.5 Ma to 10.6 ± 0.3 MaImportant note: This table is based only on rock and mineral ages recorded on mindat.org for this locality and is not necessarily a complete representation of the geochronology, but does give an indication of possible mineralization events relevant to this locality. As more age information is added this table may expand in the future. A break in the table simply indicates a lack of data entered here, not necessarily a break in the geologic sequence. Grey background entries are from different, related, localities.
| Geologic Time | Rocks, Minerals and Events | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Phanerozoic | ||||||||||
| Cenozoic | ||||||||||
| Neogene | ||||||||||
| Miocene |
| |||||||||
Other Regions, Features and Areas containing this locality
Africa
- East African Rift System (EARS)Zone (Tectonic)
African Plate
- Congo Craton
- Tanzania CratonCraton
- North-Central Gregory Rift basinBasin
This page 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, pleaseregister so you can add to our database. This locality information is for reference purposes only. You should never attempt tovisit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holdersfor access and that you are aware of all safety precautions necessary.
References
Mindat.org is an outreach project of theHudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2025, except where stated. Most political location boundaries are© OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 byJolyon Ralph.
Privacy Policy -Terms & Conditions -Contact Us / DMCA issues -Report a bug/vulnerabilityCurrent server date and time: April 19, 2025 04:01:49 Page updated: January 5, 2025 22:41:26
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2025, except where stated. Most political location boundaries are© OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 byJolyon Ralph.
Privacy Policy -Terms & Conditions -Contact Us / DMCA issues -Report a bug/vulnerabilityCurrent server date and time: April 19, 2025 04:01:49 Page updated: January 5, 2025 22:41:26