Two polytypes, 8ZnS and 10ZnS, respectively, of wurtzite found at Joplin, MO;
hexagonal. The wurtzite polytypes evidently form a homologous series (2H, 4H,
6H, etc.) resulting from growth phenomena based on screw dislocations. Am.
Mineral., 1
Source:
Dictionary of Mining, Mineral, and Related Terms
