Donate now to keep mindat.org alive!Help mindat.org|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on Mindat
The most common minerals on earthMineral PhotographyThe Elements and their Minerals
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralSearch 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
StatisticsThe ElementsMember ListBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Dacite

This page is currently not sponsored. Click here to sponsor this page.
Name:
After the ancient Roman province of Dacia (now part of Romania).
Dacitic rocks with felsics comprising >20% quartz and alkali feldspar/plagioclase <0.5 .
A fine-grained extrusive rock with a similar general composition to andesite, but having a more sodic plagioclase and more K-feldspar and quartz; it is the extrusive equivalent of granodiorite.
Synonym: quartz andesite


Hide all sections | Show all sections

Classification of DaciteHide

Dacite appears in fields 4 and 5 in the QAPF diagram.

Dacite is found in field 'O3' in the TAS diagram [glossary item missing].

Sub-divisions of DaciteHide

Mineralogy of DaciteHide

Essential minerals - these are minerals that are required within the classification of this rock:
Non-essential minerals - these minerals are common, sometimes major components, but are not always present:
Amphibole > HornblendeAn informal name for dark green to black amphiboles, mostly ferro-hornblende or ...
Feldspar > Alkali FeldsparFeldspar Group minerals rich in Potassium or Sodium.
Pyroxene > Clinopyroxene > Augite(CaxMgyFez)(Mgy1Fez1)Si2O6

Internet Links for DaciteHide

mindat.org URL:
https://www.mindat.org/min-48447.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.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2017, 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: December 11, 2017 03:55:17 Page generated: November 7, 2017 15:50:54
Go to top of page