Large blocky sample of pearly white (though dirty) albite (plagioclase feldspar) with white perthite twinning. Fractured along cleavage planes at nearly 90 degrees.
- Shepard, Charles Upham, 1804-1886
- University of South Carolina. McKissick Museum.
- Alstead, Cheshire County, New Hampshire, United States
- Historic Southern Naturalists