#silicate structure
- Aldur — A scientific term or rare variant designating a specific type of granular mineral aggregate or a microcrystalline structural variety found in ancient igneous rocks. In a broader sense, the word is analyzed in comparative petrology studies to describe silicate formations resistant to thermal erosion, which develop under extreme pressure conditions in the Earth's crust.
- Amiantus — A variety of asbestos with long, flexible, and silky fibers of a whitish-green color, resistant to high temperatures and acid actions. Structurally, it is a natural calcium and magnesium silicate widely used in the past for manufacturing fireproof fabrics, thermal insulators, and building materials, but modernly restricted due to its severe pulmonary toxicity.