Learn about the process of creating Moissanite, a silicon carbide used in the production of imitation diamonds.

Learn about the chemical properties and the Middle Eastern sources of this limestone-associated gemstone.

Learn about the composition and characteristics of this mineral. Order specimens online.

Check out the heat and energetic value of this low-grade coal.

Learn about the origin and composition of this sedimentary rock. Defines marble.

Get to know a variety of magnesium carbonate through this profile of its structure, properties, and geographic distribution.

Features a mineral used to produce furnace linings, insulation, and magnesium salts.

Learn about magnesite, or magnesium carbonate, a mineral used as an ore of magnesium. Includes images.

Examine facts and figures on this substance's composition, crystalline structure, and locations. View photos of samples.

Learn about the Swedish source of this magnetic iron ore.

Details on this copper ore's composition and structure are accompanied by a list of its geographic locations, and photos of samples.

Find out why marble disintegrates under acid rain and where the largest deposits occur.

Offers a description of the chemical make-up, properties, and distribution of this form of iron sulfide.

Learn about the Moroccan and southern European sources of this hard clay.

Learn more about this family of elements known for their strong electron bonds and physical malleability.

Check out what happens to rock when subjected to intense heat and pressure inside the earths crust.

Find the physical and chemical properties of this mineral that forms in thin sheets.

Supplies general and classification data for the mineral known as Moissanite.

Learn about this lubricant and mineral additive to steel. Covers source locations.

Defines this source of thorium. Covers its inclusion in the rare earth group.