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Additional recommended knowledge
It was first described in 1864 by Henry How. He named it after the small community of Morden, Nova Scotia, Canada, along the Bay of Fundy, where it was first found.
Mordenite is orthorhombic. It crystallizes in the form of fibrous aggreagates, masses, snd vertically striated prismatic crystals. It may be colorless, white, or faintly yellow or pink. It has Mohs hardness of 5 and a density of 2.1. When it forms well developed crystals they are hairlike; very long, thin, and delicate.
The mineral is found in volcanic rock such as rhyolite, andesite, and basalt. It is associated with other zeolites such as stilbite and heulandite. Good examples have been found in Iceland, India, Italy, Oregon, Washington, and Idaho.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Mordenite". A list of authors is available in Wikipedia.|