👉 Dacryolite is a mineral that is found in the Earth's crust. It is composed of two different types of crystals, which are called lacunae and vesicles. Lacunae are small spaces within the crystals where water molecules can flow through, while vesicles are larger structures that contain dissolved minerals like calcium carbonate or iron oxide. Dacryolite is a natural mineral that is highly reactive, meaning it has the potential to react with acids, bases, and other substances
