dolomite and gypsum are the ores of mineralenzoeken.nl
Selenite (mineral) Wikipedia. All varieties of gypsum, including selenite and alabaster, are composed of calcium sulfate dihydrate,It is frequently found in conjunction with other minerals such as, copper ores, sulfur and sulfides, silver, iron ores, coal, calcite, dolomite, limestone, and opal [24/7 online] Gypsum Minerals Education