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A Geoscience Digital Image Library

1848.jpg
TitleSchorl
DescriptionSchorl belongs to the tourmaline group. It has the chemical formula NaFe3(Al,Fe)6Si6O18(BO3)3(OH)4. Schorl can be a major component of igneous and metamorphic rocks. Some notable occurences include Brazil, Colorado, and the Appalachian mountains. This sample is approximately 6 cm.
LocationUSA ▹ California. Near San Diego.
PhotographerShannon Heinle. 2001-11-27.
CollectionUniversity of North Dakota Mineralogy Collection #1295.
Key wordsschorl, tourmaline
Tech details476 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens.
GeoDIL number1848