Ferro-sadanagaite: Mineral information, data and localities.
The sadanagaite group minerals are defined as with 0,5 < A(Na+K+ 2Ca) where Na or K is dominant, and with 1,5 < C(Al+Fe 3+ +2Ti), where Al or Fe 3+ are dominant. The W position may contain (OH),F or Cl. Ferro-sadanagaite is defined with A …
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