1) Potassium mineral 2) Vanadium mineral
Found on
https://www.crosswordclues.com/clue/roscoelite
The chemical formula is K(V3+, Al, Mg)2AlSi3O10(OH)2. Crystals of roscoelite take on the monoclinic form, and are from the 2/m point group. The appearance is semi transparent to translucent coloured olive brown to green brown. The lustre is pearly. The mineral shows pleochroism with X showing green-brown, and Y and Z axes showing olive-green colou...
Found on
http://en.wikipedia.org/wiki/Roscoelite
• (n.) A green micaceous mineral occurring in minute scales. It is essentially a silicate of aluminia and potash containing vanadium.
Found on
http://thinkexist.com/dictionary/meaning/roscoelite/
Ros'coe·lite noun [ From an English chemist, H.E.
Roscoe +
-lite .]
(Min.) A green micaceous mineral occurring in minute scales. It is essentially a silicate of aluminia and potash containing vanadium.
Found on
http://www.encyclo.co.uk/webster/R/93
No exact match found.
