Log InRegister
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreOur ScienceMindat Newsletter [Free Download]Contact Us
Donate to MindatSponsor a PageCorporate SponsorshipSponsored Pages
Learning CenterWhat Is a Mineral?The Most Common Minerals on EarthInformation for EducatorsMindat ArticlesMindat Newsletter [Free Download]The ElementsThe Mineral Quiz
Search FormMinerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDMinerals by CountryAlphabetical Mineral IndexAlphabetical Locality SearchMineral Association SearchList of CountriesLocalities Near MePhoto SearchSearch ArticlesSearch GlossaryThe Rock H. Currier Digital LibraryMore Search Options
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
MineralsPetrologyFossilsMeteoritesGeologic Time
Mining CompaniesStatisticsMineral MuseumsClubs & OrganizationsMineral Shows & EventsDevice SettingsTime Machine
Read DiscussionsIdentification Request
Photo SearchPhoto GalleriesSearch by ColourPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Comenditic rhyolite from
Hadjer el Khamis, Hadjer-Lamis Region, Chad


Locality type:Peak
Classification
Type:Comenditic rhyolite
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Comenditic rhyolite data
Locality Data:Click here to view Hadjer el Khamis, Hadjer-Lamis Region, Chad
Data Identifiers
Mindat Occurrence Record ID:1422975
Long-form Identifier:1:3:1422975:4
GUID (UUID V4):0
References
Garde, G. 1911. Description geologique des regions situees entre le Niger et le Tchad. Thesis, University of Clermont-Ferrand. A. Hermann et Fils, Paris.
Gentil, Louis (1904) Sur l'existence de roches alcalines dans le Centre africain [On the existence of alkaline rocks in Central Africa]. Compte Rendus Hebdomadaires des Seances de l'Academie des Sciences, 139 (2) 413-414
BarBeau, J. (1956). Notice explicative sur la feuille Fort-Lamy. Carte géologique de reconnaissance à l’échelle de, 1(1000000). Gouvernement General de l'Afrique Equatoriale Francaise.
 
and/or  
Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, 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 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: October 19, 2026 06:16:54
Go to top of page