Log InRegister
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 Articles
Minerals by PropertiesMinerals by ChemistryAdvanced 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 CompaniesStatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Rhyolitoid

This page is currently not sponsored. Click here to sponsor this page.
Hide all sections | Show all sections

About RhyolitoidHide

Felsites (acid volcanic rocks) tentatively identified as rhyolite, with felsic minerals comprising >20% quartz and alkali feldspar/plagioclase 40-100%


Classification of RhyolitoidHide

Rhyolitic rocks appear in fields 2 and 3 in the QAPF diagram.

Rhyolitic rocks are found in field 'R' in the TAS diagram.

Sub-divisions of RhyolitoidHide

Mineralogy of RhyolitoidHide

Essential minerals - these are minerals that are required within the classification of this rock:
Feldspar > Alkali FeldsparFeldspar Group minerals rich in Potassium or Sodium.
Silica > QuartzSiO2

Synonyms of RhyolitoidHide

Internet Links for RhyolitoidHide

mindat.org URL:
https://www.mindat.org/min-50639.html
Please feel free to link to this page.
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2019, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: March 21, 2019 08:23:45 Page generated: February 24, 2019 10:26:24
Go to top of page