Vote for your favorite mineral in #MinCup26! - Azurite vs. Smithsonite
It's carbonate-vs-carbonate to kick off Mineral Cup 2026 with copper-rich Azurite against zinc-rich Smithsonite.
Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
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 TimeExplore Fossils
Minerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral QuizTime Machine
Photo SearchPhoto GalleriesSearch by ColorPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Trachytoid

A rock classification type
This page is currently not sponsored. Click here to sponsor this page.
03901170017271952556802.jpg
Alkali-feldspar-trachyte

Wyoming, USA
02877700017271952974610.jpg
Latite, etc.

Calton Quarry, Monte Alto, Montegrotto Terme, Padova Province, Veneto, Italy
06972680017271952578707.jpg
Trachyte

Štenská quarry, Teplá, Cheb District, Karlovy Vary Region, Czech Republic
03901170017271952556802.jpg
Alkali-feldspar-trachyte

Wyoming, USA
02877700017271952974610.jpg
Latite, etc.

Calton Quarry, Monte Alto, Montegrotto Terme, Padova Province, Veneto, Italy
06972680017271952578707.jpg
Trachyte

Štenská quarry, Teplá, Cheb District, Karlovy Vary Region, Czech Republic
03901170017271952556802.jpg
Alkali-feldspar-trachyte

Wyoming, USA
02877700017271952974610.jpg
Latite, etc.

Calton Quarry, Monte Alto, Montegrotto Terme, Padova Province, Veneto, Italy
Hide all sections | Show all sections

About TrachytoidHide

Rocks tentatively identified as trachyte, with felsics comprising <20% quartz, <10%foids and plagioclase/alkali feldspar <2.


Unique IdentifiersHide

Mindat ID:
50641
Long-form identifier:
mindat:1:1:50641:2

Classification of TrachytoidHide

QAPF_V_6,6-,6star,7,7-,7star,8,8-,8star.png

Trachytic-rock appears in fields 6,6*,6',7,7*,7',8,8* and 8' in the QAPF diagram.

TAS_S1,S2,S3,T.png

Trachytic-rock is found in fields S1, S2, S3 and T in the TAS diagram.

Sub-divisions of TrachytoidHide

Age distributionHide

Recorded ages:
Neoproterozoic to Quaternary : 832 ± 40 Ma to 0 Ma - based on 77 recorded ages.

Synonyms of TrachytoidHide

Internet Links for TrachytoidHide

References for TrachytoidHide

Reference List:
Quick NavTopAbout TrachytoidUnique IdentifiersClassification Sub-divisions Age distributionSynonymsInternet Links References
 
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: September 1, 2026 14:33:38 Page updated: December 30, 2025 13:02:50
Go to top of page