👉 Spherulite is a type of volcanic rock that is composed of silicate minerals. It is commonly found in areas where magma or lava has been vented from volcanoes, and it can also be formed by erosion or weathering processes. Spherulites are often seen in the form of small crystals or grains, which are usually white or gray in color. They have a characteristic hardness and texture, with their surface being rougher than that of other types of volcanic rocks.