Anorthite from Warren County, New York, USA
USA | |
| [var. Labradorite] Larsen, E.S. & Schaller, W.T. (1932) American Mineralogist, 17, #10, 457-465. |
| [var. Labradorite] Miller, William J. (1937). Genesis of Certain Adirondack Garnet Deposits (American Mineralogist 23: 399-408). |