Min. [Named by Dana, 1868, from Tavistock, a town in Devonshire, where found: see -ITE1.] Hydrous phosphate of aluminum and calcium, found in microscopic acicular crystals (Chester, Names Min.).
[1865. A. H. Church, in Jrnl. Chem. Soc., 264. Our present mineral is from Tavistock, Devonshire.]
1868. Dana, Min., 582. Tavistockite.