A Geoscience Digital Image Library

TitleArduinite, from Trento, Italy
DescriptionThe orange mineral here is arduinite. Arduinite, also known as mordenite, is a rare member of the zeolite group. The structure of zeolites contains open channels that allow water and large ions to travel into and out of the crystal structure. The size of these channels controls the size of the molecules or ions and therefore a zeolite like mordenite can act as a chemical sieve, allowing some ions to pass through while blocking others. Mordenite forms fine sprays of radial acicular crystal clusters that look like pin-cushions or snowballs. Arduinite's chemical formula is (Ca,Na2,K2)Al2Si10O24ยท7H2O. Arduinte aka mordenite was named after its locality in Morden, Canada.
LocationItaly. Near Trento.
PhotographerShannon Heinle. 2001-02-22.
CollectionUniversity of North Dakota Mineralogy Collection #1852.
Key wordsarduinite, mordenite, zeolite, silicate
Tech details803 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens.
GeoDIL number141