PCM
Felsic rocks

AC-E-NP

A microgranite formed as part of an igneous intrusion which builds the base of the Ailsa Craig island.
Pressed powder pellets
matrix matched
nano-particulate
ultrahomogeneous
extremely pure
binder free
Classification
Processed Material
Category
Felsic rocks
Location
Ailsa Craig Island
Matrix
Granite
Assigned values
Major elements, Trace elements
Field of application
Igneous petrology, Bulk geochemistry
Suitable for
Files
Product Information Sheet

Felsic rocks

Felsic rocks are characterised by a high silica content of > 69 m/m% and high concentrations of alkali metals such as sodium and potassium. Their principal mineralogy is comprised of quartz, sodium- and or potassium-rich feldspar varieties, but may also contain micas i.e. muscovite. On average the continental crust can be described as being felsic. Mafic minerals are virtually absent.