a. A monoclinic mineral, Ca2 (Co,Mg)(AsO4 )2 .2H (sub
2) O ; roselite group; forms a series with wendwilsonite; dimorphous with
roselite-beta; perfect cleavage.
b. The mineral group brandtite, roselite, wendwilsonite, and zincrosasite.
Source:
Dictionary of Mining, Mineral, and Related Terms