steenstrupine

English

Etymology

Steenstrup +‎ -ine

Noun

steenstrupine (uncountable)

1. (mineralogy) A rare dark brown mineral, (La,Ca,Na)(Al,Fe,Mn)(Si,P)(O,OH,F)₄, found in Greenland, occurring in rhombohedral crystals or massive formations.
   • 1963, Bent Eske Koch, E. I. Hamilton, William E Davies, Meddelelser Om Grønland, page 31:

     It is a remarkable fact that the most fresh steenstrupine in lujavrites and veins is found in rocks carrying albite (and ussingite).

   • 1979, Rapport, numbers 95-103, page 110:

     In most of the Ilímaussaq rocks, Th and U are concentrated in eudialyte, but in the final lujavrites they are largely held by steenstrupine.

Related terms

• steenstrupite