by Gelogia Team | Jun 22, 2026 | Mineralogy
Tanzanite is one of the world’s rarest and most valuable gemstones. Known for its striking blue-violet color, tanzanite is found in only one location on Earth—a small mining area in northern Tanzania. Since its discovery in 1967, tanzanite has become one of the...
by Gelogia Team | Jun 21, 2026 | Mineralogy
The streak test is one of the simplest and most reliable methods used to identify minerals. While a mineral’s surface color can vary due to impurities or weathering, its streak often remains consistent. Geologists use streak tests to distinguish between minerals...
by Gelogia Team | Jun 21, 2026 | Mineralogy
One of the most important methods used in mineral identification is the mineral hardness test. Hardness helps geologists determine a mineral’s resistance to scratching and is often one of the first tests performed when identifying unknown specimens. The hardness...
by Gelogia Team | Jun 21, 2026 | Mineralogy
Minerals are the building blocks of rocks and one of the most important subjects in geology. While thousands of minerals exist, geologists identify them using a set of physical and chemical properties rather than appearance alone. Learning how to identify minerals is...
by Gelogia Team | Jun 21, 2026 | Mineralogy
After minerals have been mined and concentrated through mineral processing, valuable metals still remain locked within mineral compounds. Smelting and refining are the final stages of metal production that transform mineral concentrates into pure, usable metals. These...
