Ref.: Rocks & Min.: 63:109 & 64:298 & 300-307; Appleman, et al(1987); Stone, et al(1982); Barwood, H (1995), Benitoite and Joaquinite in Arkansas, Min.News: 11(5):2, 5. A stone quarry in garnet-pseudoleucite syenite in an alkalic ring-dike complex also including nepheline syenite pegmatite, ijolite and carbonatites. Quarried for railroad ballast rock. Located on the South rim of Magnet Cove formation. Started in the 1870's and worked sporadically until 1900's. Owned by Henry de Linde of Mabelvale, Arkansas. Mineralization is in miarolitic cavities in the rock.