Geology and Minerals

Alkali feldspar granite

Alkali feldspar granite, some varieties of which are called 'red granite', is a felsic igneous rock and a type of granite rich in the mineral potassium feldspar (K-spar). It is a dense rock with a phaneritic texture. The abundance of K-spar gives the rock a predominant pink to reddish hue peppered with minor amounts of black minerals.

Also on this shelf

See also

• ▸Endothiodon Assemblage Zone
• ▸1840s
• ▸Carpathian Mountains

Uncatalogued shelf

Text from Wikipedia; plate via Wikimedia Commons. Text CC BY-SA 4.0; plate freely licensed (see Commons). Source record. Images and catalogue data are reproduced from open-access collections.