Anorthite from selected localities.
USA | |
| [var: Labradorite] Pratt,Joseph Hyde (1933) Gems and Gem Minerals of North Carolina: American Mineralogist,Vol.18,No.4,April,1933 |
[var: Labradorite] Hoy,Robert B.,(1939) Geology And Ore Deposits Of The Capps Gold Mine,Mecklenburg County,North Carolina |