Ferro-richterite
A variety of Richterite Root Name Group
What is Ferro-richterite?
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Ferro-richterite Localities Map
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North ZoneCentral RidgeSouth Basin
Quick Facts
Physical Properties
- Color
- Brown to brownish-red, rose-red, yellow, grey-brown, also pale to dark green.
- Hardness (Mohs)
- 5 - 6
Chemical Properties
- Chemical Formula
- {Na}{CaNa}{Fe2+5}(Si8O22)(OH)2 The richterite group minerals are defined as sodium-calcium amphiboles with 0.5 apfu < A(Na+K+2Ca) where Na or K is dominant, and with C(Al+Fe3++2Ti)<0.5 apfu. The W position may contain (OH),F or Cl. Ferro-richterite is defined with A position: Na dominant C position: Fe2+ dominant W position: (OH) dominant.
- Elements
- Ca, Fe, H, Na, O, Si
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