Limestone is a sedimentary rock composed primarily of calcium carbonate (CaCO 3) in the form of the mineral calcite. It most commonly forms in clear, warm, shallow marine waters. It is usually an organic sedimentary rock that forms from the accumulation of shell, coral, algal and fecal debris.imestone is by definition a rock that contains at least 50% calcium carbonate in the form of calcite by weight. All limestones contain at least a few percent other materials. These can be small particles of quartz, feldspar, clay minerals, pyrite, siderite and other minerals.
1 To lose belly fat fast, you should try doing several different types of yoga for exercise and stress reduction. 2  Flow yoga burns fat while reducing stress. 3  If you choose to try meditation, it can also help you sleep.
Exercise most days of the week. In order to lose belly fat, you need to create a calorie deficit, or burn more calories than you consume. One of the best methods to do this is exercise. Aim to do three days of cardiovascular exercise and three days of strength training. Try to make each session 30-60 minutes in length.