• Source: Colemanite

Colemanite (Ca2B6O11·5H2O) or (CaB3O4(OH)3·H2O) is a borate mineral found in evaporite deposits of alkaline lacustrine environments. Colemanite is a secondary mineral that forms by alteration of borax and ulexite.
It was first described in 1884 for an occurrence near Furnace Creek in Death Valley and was named after William Tell Coleman (1824–1893), owner of the mine "Harmony Borax Works" where it was first found. At the time, Coleman had alternatively proposed the name "smithite" instead after his business associate Francis Marion Smith.




Uses


Colemanite is an important ore of boron, and was the most important boron ore until the discovery of kernite in 1926. It has many industrial uses, like the manufacturing of heat resistant glass.




See also


List of minerals
List of minerals named after people




References






External links


Media related to Colemanite at Wikimedia Commons
Spencer, Leonard James (1911). "Colemanite" . In Chisholm, Hugh (ed.). Encyclopædia Britannica. Vol. 6 (11th ed.). Cambridge University Press. p. 665.
"Death Valley - Historic Resource Study - A History of Mining".

Kata Kunci Pencarian:

• Colemanite
• Borate mineral
• Boron, California
• Ulexite
• Mohs scale
• List of gemstones by species
• Fiberglass
• Calico, California
• List of minerals
• Borate