Species found thus far include anapaite, vivianite, kutnohorite, and the white hydrocarbon mineral hartite, [C.
At the Santa Barbara mine, over the past 20 years, fairly good specimens of anapaite, vivianite and gypsum have been found.
Anapaite is an uncommon phosphate previously known from a few localities, among which are Anapa, on the Black Sea, Russia; Prats-Sampsor (Spain); Kings County, California; and Messel (Germany).
At site SBI and SB2 (the Castelnuovo and Allori mines), anapaite has been found as layered deposits inside the Meleto clays.
Anapaite occurs as radiating masses with variable shape and size.
The anapaite nodules often appear joined together to form a compound cluster.
Barite was discovered in association with the more abundant anapaite, as thin, radiating, hemispherical, yellowish aggregates no larger than 1 mm.