Girish Mahajan (Editor)

Tinaksite

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Category
  
Silicate mineral

Crystal system
  
Triclinic

Strunz classification
  
9.DG.75

Space group
  
P1

Formula (repeating unit)
  
K2Na(Ca,Mn)2Ti[O|Si7O18(OH)]

Crystal class
  
Pinacoidal (1) (same H-M symbol)

Tinaksite (K2Na(Ca,Mn2+)2Ti[O|Si7O18(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.

References

Tinaksite Wikipedia