Facts on this substance's composition and characteristics are accompanied by photos and links to related topics.
Encyclopedia entry describes this mineral and lists its chemical formula.
Offers information regarding the many varieties of the mineral calcite, its commercial uses, and its physical characteristics.
Entry defines an ingredient in fertilizer and a common source of potash.
Find out more about this variety of quartz formerly valued for its blood-red color.
Entry defines this dark colored mineral and offers the location of worldwide deposits.
View cassiterite, or tin oxide, specimens and review its physical characteristics. Includes a list of associated minerals.
Introduces this form of strontium sulfate, which is also known as celestite. Offers facts on its composition, properties, and distribution.
Find a definition of this blue crystal normally formed in hot spring vents.
Presents the characteristics of this mineral from the Barite group and the Sulfite class. Order specimens.
Discover cerussite, a popular collection mineral also known as lead carbonate. Includes a description of its physical characteristics.
Introduces a variety of quartz which encompasses agate, chrysoprase, carnelian, tiger's eye, and bloodstone.
Provides the chemical formula, properties, varieties, uses, and geographical location of this mineral.
Indexes the details about the class, composition and characteristics of Chalcocite, a copper mineral ore.
Presents the chemical properties, physical characteristics, and geographic locations of deposits of this copper source.
Discover the characteristics of Chalcopyrite, a mineral also known as copper pyrite and often referred to as Fool's Gold.
Reference guide discusses the physical properties, composition, and geographical location of this substance.
Features a concise description of the colors and other physical properties of this type of mineral.
Read a reference entry describing the physical properties and geographical locations of this chromium ore.
Scan the physical characteristics of chromite, the most important ore of chromium with many industrial uses. Includes field indicators.
Reference article describes the mineral's physical properties, uses, and geographic locations.
Overview on this mercury source describes its physical properties and the geographic locations of its deposits.
Presents a description of the physical characteristics and properties of this mineral, as well as info on deposit locations.
Consult this description of the class and characteristics of Cobaltite, an ore of Cobalt.
Reference article describes the physical properties of this material and mentions its geographic locations.
Discover what coesite, also known as silicon dioxide, looks like. Learn about its uses, chemical composition and physical characteristics.
Profiles this variety of aluminum oxide, with facts and figures on its chemical make-up, physical features, and geographic distribution.
Reference article on this mineral describes its physical properties and uses.
Fact sheet describes this uncommon mineral, used as mineral specimens and as an aid to aluminum processing.
Find an encyclopedia overview which describes the physical properties and geographic locations of deposits of this copper ore.