1. (noun) a light colored mineral consisting of calcium magnesium carbonate; a source of magnesium; used as a ceramic and as fertilizer

• bitter spar

1. (noun) a kind of sedimentary rock resembling marble or limestone but rich in magnesium carbonate

• rock
• stone

2. (noun) a light colored mineral consisting of calcium magnesium carbonate; a source of magnesium; used as a ceramic and as fertilizer

• mineral

1. (noun) a kind of sedimentary rock resembling marble or limestone but rich in magnesium carbonate

• dolomitic

2. (noun) a light colored mineral consisting of calcium magnesium carbonate; a source of magnesium; used as a ceramic and as fertilizer

• dolomitic