![cover image](https://wikiwandv2-19431.kxcdn.com/_next/image?url=https://upload.wikimedia.org/wikipedia/commons/thumb/6/66/Parque_Nacional_Pali_Aike_Chile-Foto2.jpg/640px-Parque_Nacional_Pali_Aike_Chile-Foto2.jpg&w=640&q=50)
Alkali basalt
Type of volcanic rock / From Wikipedia, the free encyclopedia
Dear Wikiwand AI, let's keep it short by simply answering these key questions:
Can you list the top facts and stats about Alkali basalts?
Summarize this article for a 10 year old
SHOW ALL QUESTIONS
Alkali basalt or alkali olivine basalt is a dark-colored, porphyritic volcanic rock[2] usually found in oceanic and continental areas associated with volcanic activity, such as oceanic islands, continental rifts and volcanic fields.[3] Alkali basalt is characterized by relatively high alkali (Na2O and K2O) content relative to other basalts and by the presence of olivine and titanium-rich augite in its groundmass and phenocrysts, and nepheline in its CIPW norm.[4][5]
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/6/66/Parque_Nacional_Pali_Aike_Chile-Foto2.jpg/640px-Parque_Nacional_Pali_Aike_Chile-Foto2.jpg)