Oxygen,Calcium,and Sulfur
First of all, Gypsum is a mineral, and Rock Gypsum is a rock, don't get them confused. Second of all, no they aren't. Rock Gypsum is a sedimentary rock, and an alternate name for it is Alabaster.
Gypsum is actually a major rock forming mineral. Rock gypsum is a chemical sedimentary rock.
Gypsum (CaSO4·2H2O).
Yes. They're the same.
Physical precipitation of gypsum due to the evaporation of seawater produces sedimentary rock called gypsum rock or rock gypsum.
Rock salt and gypsum are not varieties of dolomite.
gypsum is used in sheet rock
Gypsum rock is usually colorless or white, but it can also be found in shades of pink, gray, or brown due to impurities present in the mineral.
Gypsum is formed underwater, usually between layers of shale and limestone. When the water evaporates and the area dries, the gypsum becomes solid "rock" gypsum.
secondary rock
Rock salt and rock gypsum are predominately the minerals halite and gypsum respectively. Quartzite is also predominately the mineral quartz.
Rock gypsum is a sedimentary rock. These rocks can be transparent or opaque. Examples could be chalk and chalk boards.