Jackson's Mineral Salts #3 Calcium Sulfate - According to Dr. Schuessler and other homeopathic references, Calcarea sulphurica (Calc sulph) is an important salt in the body related to cleansing of the blood and tissues. Acne, pimples (especially in adolescence), sore throats, catarrh (i.e. congestion), and a tendency to produce cysts and boils that are slow to resolve are all related to an imbalance of this salt in the body.