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tourmaline
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Introduction References & Edit History Related Topics
Images
A sample of elbaite (tourmaline group) from the Pederneira Mine, São José da Safira, Governador Valadares Region, Minas Gerais, Braz.
Quizzes
Basalt sample returned by Apollo 15, from near a long sinous lunar valley called Hadley Rille. Measured at 3.3 years old.
(Bed) Rocks and (Flint) Stones
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Group of children and their parents playing trick or treat on Halloween.
Why Do We Celebrate Halloween?
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The Battle of Gettysburg, July 1-3, 1863. (Civil War, Pennsylvania)
9 Worst Generals in History
Monitor. Varanus salvadorii is a monitor lizard found in New Guinea can grows to 2.7 metres (9 ft.) aka Tree crocodile, Crocodile monitor, Salvadori's monitor, artellia, reptile
7 of the World’s Most Dangerous Lizards and Turtles
Orange basketball on black background and with low key lighting. Homepage 2010, arts and entertainment, history and society
The 10 Greatest Basketball Players of All Time
Ice Sledge Hockey, Hockey Canada Cup, USA (left) vs Canada, 2009. UBC Thunderbird Arena, Vancouver, BC, competition site for Olympic ice hockey and Paralympic ice sledge hockey. Vancouver 2010 Olympic and Paralympic Winter Games, Vancouver Olympics
10 Best Hockey Players of All Time
Srinivasa Ramanujan, Indian mathematician and autodidact.
6 Interesting Facts about Srinivasa Ramanujan
The Prado Museum facade at the Diego Velaszquez memorial. Established in 1819, the museum is considered the best collection of Spanish art and one of the world's finest collections of European art. Madrid, Spain
20 Paintings You Have to Visit at the Museo del Prado in Madrid
Nativity Scene, Adoration of the Magi, Church of the Birth of the Virgin Mary, Montenegro
Why Is Christmas in December?

tourmaline: References & Edit History

Article History

Type Description Contributor Date
Add new Web site: USGS - Tourmaline. Nov 28, 2024
Add new Web site: University of Nebraska–Lincoln - School of Natural Resources - Traditional Birthstones - Tourmaline (October). Sep 07, 2024
Add new Web site: Natural History Museum of Utah - What is Tourmaline? Jun 28, 2024
Add new Web site: Journal of GEOsciences - Tourmaline compositions and textures: reflections of the fluid phase. Apr 05, 2024
Add new Web site: International Gem Society - Tourmaline Value, Price, and Jewelry Information. Feb 23, 2024
Add new Web site: Academia - Tourmaline: an ideal indicator of its host environment. Jan 12, 2024
Add new Web site: Gemological Institute of America - Tourmaline. Nov 28, 2023
Add new Web site: Geosciences LibreTexts - Tourmaline. Jul 21, 2023
Add new Web site: Geology.com - Tourmaline. Mar 17, 2023
Deleted photograph. Mar 25, 2010
Photo of elbaite added. Jan 26, 2010
Added new Web site: International Colored Gemstone Association - Tourmaline. Apr 16, 2009
Added new Web site: United States Geological Survey - Tourmaline. Apr 16, 2009
Added new Web site: Minerals.Net - Tourmaline. Apr 07, 2009
Media added. Mar 07, 2009
Added new Web site: Amethyst Galleries - The Tourmaline Group of Minerals. Jun 09, 2008
Article added to new online database. Jul 20, 1998
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