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Brief Description: Its name derives from the Greek word varis (heavy) because of its large specific gravity. In the Dark Ages, it was considered a heavy variety of gypsum. Its chemical formula is BaSO4, with vitreous or pearly lustre and it belongs to the category of sulphuric minerals. Its colour is white with shades of yellow, red or blue. Its hardness is 3-3.5, specific gravity 4.5 and fusibility 4. It is a transparent to semitransparent mineral. Crystal system: orthorhombic. Its crystals are tabular or prismatic. It is often found in complex aggregates (desert rose) and granular aggregates. It occurs in veins, thermal springs deposits, basic rocks cavities etc. It connects with Ag, Cu, Pb, Mn, Sb, Co, as well as calcite, fluorite, quartz etc. 
Bibliography: Ευρετήριο ορυκτών ΑΠΘ στην ιστοσελίδα http://www.geo.auth.gr/106/az_gr.htm Τσιραμπίδης Α. Ο ορυκτός πλούτος της Ελλάδας. Εκδόσεις Γιαχούδη Θεσσαλονίκη, 2005, σελ. 391. Berry, L.G., Mason, B. and Dietrich, R.V. (1983). Mineralogy. W. H. Freeman and Company, San Francisco, 561 pp. Σαπουντζής, Η. και Χριστοφίδης, Γ. (1985). Ορυκτοδιαγνωστική. University Studio Press, Θεσσαλονίκη, 241 σ.