What is "tinaksite"

n. (context mineralogy English) A triclinic mineral containing calcium, hydrogen, iron, manganese, oxygen, potassium, silicon, sodium, and titanium.

Tinaksite (KNa(Ca,Mn)Ti[O|SiO(OH)]) is a mineral found in northern Russia. Tinaksite can be grayish-white, yellowish, orange, or brown, and it is often found in charoite. Its name is derived from its composition: titanium (Ti), sodium (Na) potassium (K) and silicon (Si). International Mineralogical Association first recognized tinaksite as a mineral in 1965.