Alabaster is a name applied to varieties of two distinct minerals : gypsum -LRB- a hydrous sulfate of calcium -RRB- and calcite -LRB- a carbonate of calcium -RRB- .

Alabaster is a name applied to varieties of two distinct minerals : gypsum -LRB- a hydrous sulfate of calcium -RRB- and calcite -LRB- a carbonate of calcium -RRB- .
